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• How do I make solr/jetty find the installed slf4j jars in Ubuntu 12.04?

  - by J. Pablo Fernández

  I'm running Ubuntu 12.04's packaged Jetty in which I installed solr 4.3.1 (by copying the war file to /var/lib/jetty/webapps. When I start Jetty, I get this error: failed SolrRequestFilter: org.apache.solr.common.SolrException: Could not find necessary SLF4j logging jars. If using Jetty, the SLF4j logging jars need to go in the jetty lib/ext directory. The package libslf4j-java is installed, and the jars are in /usr/share/java: /usr/share/java/log4j-over-slf4j.jar /usr/share/java/slf4j-api.jar /usr/share/java/slf4j-jcl.jar /usr/share/java/slf4j-jdk14.jar /usr/share/java/slf4j-log4j12.jar /usr/share/java/slf4j-migrator.jar /usr/share/java/slf4j-nop.jar /usr/share/java/slf4j-simple.jar but somehow, Jetty and/or Solr are not finding them. How do I make them find them? or how do I install some other jars where jetty/solr would find them? The full error is: 88 [main] INFO org.mortbay.log - jetty-6.1.24 443 [main] INFO org.mortbay.log - Deploy /etc/jetty/contexts/javadoc.xml -> org.mortbay.jetty.handler.ContextHandler@cec0c5{/javadoc,file:/usr/share/jetty/javadoc} 522 [main] INFO org.mortbay.log - Extract file:/var/lib/jetty/webapps/solr.war to /var/cache/jetty/data/Jetty__8080_solr.war__solr__zdafkg/webapp 1501 [main] WARN org.mortbay.log - failed SolrRequestFilter: org.apache.solr.common.SolrException: Could not find necessary SLF4j logging jars. If using Jetty, the SLF4j logging jars need to go in the jetty lib/ext directory. For other containers, the corresponding directory should be used. For more information, see: http://wiki.apache.org/solr/SolrLogging 1501 [main] ERROR org.mortbay.log - Failed startup of context org.mortbay.jetty.webapp.WebAppContext@5329c5{/solr,file:/var/lib/jetty/webapps/solr.war} org.apache.solr.common.SolrException: Could not find necessary SLF4j logging jars. If using Jetty, the SLF4j logging jars need to go in the jetty lib/ext directory. For other containers, the corresponding directory should be used. For more information, see: http://wiki.apache.org/solr/SolrLogging at org.apache.solr.servlet.SolrDispatchFilter.<init>(SolrDispatchFilter.java:105) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:532) at java.lang.Class.newInstance0(Class.java:374) at java.lang.Class.newInstance(Class.java:327) at org.mortbay.jetty.servlet.Holder.newInstance(Holder.java:153) at org.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java:92) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:662) at org.mortbay.jetty.servlet.Context.startContext(Context.java:140) at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250) at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:518) at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152) at org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:156) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130) at org.mortbay.jetty.Server.doStart(Server.java:224) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.xml.XmlConfiguration.main(XmlConfiguration.java:985) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.mortbay.start.Main.invokeMain(Main.java:194) at org.mortbay.start.Main.start(Main.java:534) at org.mortbay.jetty.start.daemon.Bootstrap.start(Bootstrap.java:30) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.apache.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:243) Caused by: java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory at org.apache.solr.servlet.SolrDispatchFilter.<init>(SolrDispatchFilter.java:103) ... 36 more Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory at java.net.URLClassLoader$1.run(URLClassLoader.java:217) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:205) at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:392) at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:363) ... 37 more 1505 [main] WARN org.mortbay.log - failed org.mortbay.jetty.webapp.WebAppContext@5329c5{/solr,file:/var/lib/jetty/webapps/solr.war}: java.lang.NoClassDefFoundError: org/slf4j/Logger 1579 [main] WARN org.mortbay.log - failed ContextHandlerCollection@19d0a1: java.lang.NoClassDefFoundError: org/slf4j/Logger 1582 [main] INFO org.mortbay.log - Opened /var/log/jetty/2013_06_27.request.log 1582 [main] WARN org.mortbay.log - failed HandlerCollection@cbf30e: java.lang.NoClassDefFoundError: org/slf4j/Logger 1582 [main] ERROR org.mortbay.log - Error starting handlers java.lang.NoClassDefFoundError: org/slf4j/Logger at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Class.java:2454) at java.lang.Class.getMethod0(Class.java:2697) at java.lang.Class.getMethod(Class.java:1622) at org.mortbay.log.Log.unwind(Log.java:228) at org.mortbay.log.Log.warn(Log.java:197) at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:475) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152) at org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:156) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130) at org.mortbay.jetty.Server.doStart(Server.java:224) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.xml.XmlConfiguration.main(XmlConfiguration.java:985) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.mortbay.start.Main.invokeMain(Main.java:194) at org.mortbay.start.Main.start(Main.java:534) at org.mortbay.jetty.start.daemon.Bootstrap.start(Bootstrap.java:30) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.apache.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:243) Caused by: java.lang.ClassNotFoundException: org.slf4j.Logger at java.net.URLClassLoader$1.run(URLClassLoader.java:217) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:205) at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:392) at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:363) ... 29 more

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• Intsalling Linux on PowerEdge R410 via USB

  - by Bill Johnson

  I’m hoping someone can help me with the following issue. I have a Dell PowerEdge R410 and basically the Optical Drive has failed when I have been given the server. I have installed 2 SATA drives and want to install Ubuntu 11.04; however, each time I have tried i.e. using bootable .iso on USB it failed. I assume it's failing as with a lot of releases they all look at the CD drive. Ubunutu has failed on installation with the error message unable to mount CD. I have tried installing Microsoft Hyper-v and that also fails as during installation it asks for CD/DVD drivers. Tried embedding ISO's from various distro's (Linux and Windows) with drivers and that hasn't worked out either. Does anyone have any idea on how I can get Ubuntu on this server? Should I look towards an old distro perhaps?

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• HDFS datanode startup fails when disks are full

  - by mbac

  Our HDFS cluster is only 90% full but some datanodes have some disks that are 100% full. That means when we mass reboot the entire cluster some datanodes completely fail to start with a message like this: 2013-10-26 03:58:27,295 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException: Mkdirs failed to create /mnt/local/sda1/hadoop/dfsdata/blocksBeingWritten Only three have to fail this way before we start experiencing real data loss. Currently we workaround it by decreasing the amount of space reserved for the root user but we'll eventually run out. We also run the re-balancer pretty much constantly, but some disks stay stuck at 100% anyway. Changing the dfs.datanode.failed.volumes.tolerated setting is not the solution as the volume has not failed. Any ideas?

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• Alerting when a RAID Array disk fails locally on VMWare ESX or ESXi System

  - by Tim K

  With ESX and ESXi, we recently had two systems where that the boot partition became degraded due to a failed disk. The only alert we managed to capture was the visual alert on the Dell servers. We failed to received any electronic alerts regarding the failed or degraded array. Does anyone have any experience with monitoring for these types of failures? In both cases, the servers were running in a RAID 5 SCSI configuration (5 disks on one system, 3 disks on another) which if we were running a Windows Server OS, we would have had an alert created in the Eventviewer. Where would I begin to look for this solution. Can it be configured in VCenter or vFoglight?

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• Website hosted on IIS is not accessbile

  - by Tola Odejayi

  I have two sites set up in IIS on a remote machine RM; one on regular port 80, and the other on port 5773. From my local machine LM, I can access the site on 80, but I cannot access the one on 5773; I get a status code of 502 and an error code of 10060 (A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond) when I try to do this. I can access the 5773 site via IIS when I am logged into RM (i.e. by right clicking on a page on the site and going 'Browse'). I can also access pages on the 5773 site via a browser, again when I am logged into RM. I just can't do the same via a browser when I am logged into LM. I have ensured that port 5773 is open for outgoing traffic on LM. Could the problem be that I also need to ensure that port 5773 is open for inbound traffic on RM?

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• DPM - Monitoring is green, Protection has error and Latest rec point is old. How do I interpret that?

  - by LosManos

  How do I read the DPM info in this case? Monitoring says Failed but Protection shows Ok while having a Latest recovery point from last year. Under Monitoring tab I have Failed for Source | Computer | Protection group | Start time Computer\System Protection | MyServerName | Recovery point | 2014-06-09 19:00:00 which shows me that something happened last night. But under Protection tab everything is green. Here I have Protection group member | | Protection status Protection group ..name.. Computer: MyServerName Computer\System protection Bare metal recovery OK ... Latest recovery point: 2013-12-12 06:32:54 My guess is that backup failed last night once, but succeeded later. It then found out that there hasn't been any change since sometime last year and leave it be and flags Ok.

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• Issue with Windows Server backup

  - by mamu

  I have windows server 2008 r2 installed, Only service running on it is hyper-v. I am trying to take backup using windows server backup feature and it fails with following error in eventlog The backup operation that started at '?2009?-?08?-?22T18:42:14.123000000Z' has failed because the Volume Shadow Copy Service operation to create a shadow copy of the volumes being backed up failed with following error code '2155348129'. Please review the event details for a solution, and then rerun the backup operation once the issue is resolved. Above error itself is point to other event logs for more detail but i can't find anything in event logs Then i ran following command vssadmin list writers It had following out of ordinary in list Writer name: 'Microsoft Hyper-V VSS Writer' Writer Id: {66841cd4-6ded-4f4b-8f17-fd23f8ddc3de} Writer Instance Id: {d15c5f78-121c-464f-b23b-f285e919b05c} State: [8] Failed Last error: Inconsistent shadow copy How could i resolve this?

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• Can't change read only folder in windows 7

  - by James Drinkard

  I'm trying to run a Spring MVC 2.5 tutorial and when I run the ant script for a deploy, I get this error: deploy: [copy] Copying 2 files to C:\apache-tomcat-7.0.8\webapps\c:\projects\workspace\springapp BUILD FAILED C:\projects\workspace\springapp\build.xml:46: Failed to copy C:\projects\workspace\springapp\war\WEB-INF\web.xml to C:\apache-tomcat-7.0.8\webapps\c:\projects\workspace\springapp\WEB-INF\web.xml due to failed to create the parent directory for C:\apache-tomcat-7.0.8\webapps\c:\projects\workspace\springapp\WEB-INF\web.xml After reviewing the directory: springapp I saw the properties as read-only. No problem I thought as I'm logging in as administrator. However, changing the uac settings, going to a command prompt as admin and then trying to change the properties of the folder with attrib, making me the owner of the folder, changing the security settings etc... did nothing. I can't seem to change this folder to anything. So my question is, how do I change the settings on that folder so ANT can make changes to that folder?

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• Debian - Can't stop MySQL; permissions?

  - by anon

  I just tried to upgrade from debian squeeze to unstable by replacing 'squeeze' with 'unstable' in /etc/apt/sources.list. The upgrade went smoothly except for mysql, which failed because it couldn't stop mysql. /etc/init.d/mysql stop simply returns that it failed, but if I try to get the status with /etc/init.d/mysql status it gives me this error: me@debian:~$ sudo /etc/init.d/mysql status /usr/bin/mysqladmin: connect to server at 'localhost' failed error: 'Access denied for user 'debian-sys-maint'@'localhost' (using password: YES)' . mysql is running fine, and I checked the permissions for debian-sys-maint in phpmyadmin and it's allowed to do everything, but only connect from 'localhost.'

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• Need help translating rate limiting iptables rules to Puppet format

  - by geoffroy

  I use Puppet Iptables module to manage Iptables rules on my machine. I'd like to implement to rate limit failed SSH connections as described here : Hundreds of failed ssh logins iptables -A INPUT -p tcp --dport 22 -m recent --update --seconds 60 --hitcount 5 --name SSH --rsource -j DROP iptables -A INPUT -p tcp --dport 22 -m recent --set --name SSH --rsource -j ACCEPT Is it possible to translate it to Puppet syntax, such as firewall { '015 drop 5 failed attemps to connect to SSH in a minute ': proto => 'tcp', port => 22, action => 'drop', // what are the other paramters ? } Any help welcome. Best regards Geoffroy

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• mysql wont stop, mysqld_safe appeared in top

  - by power4

  my server (CentOS) contains lots of website, which collect data from lots of sources with cron. the mysql config is the default recently, PHP failed to communicate with mysql. Firstly I just restart the server but after restarted, PHP still failed to communicate with mysql I've tried: ps ax | grep mysql Then run: kill -9 #### (I've also tried killall -9 ####) - this failed, ps ax | grep mysql showing the killed process id is still there service mysqld start (I've also tried /etc/init.d/mysqld start) - I got reply Timeout error occurred trying to start MySQL Daemon. when run top, mysqld_safe is appeared on top with about 50% of CPU usage. I dont know the size of all the database. I really confused

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• Cannot login SQL Server after changing machine name

  - by Ucodia

  After installing and setting up new machines in a domain, we decided to rename one of them which had a SQL Server instance installed. So I changed the hostname, everything went fine regarding the domain but now, the server is logging a approximatively 2 SQL Server errors every 5 minutes and I cannot connect to the instance localy or from anywhere within the domain. Here is the error from the event log: SSPI handshake failed with error code 0x8009030c, state 14 while establishing a connection with integrated security; the connection has been closed. Reason: AcceptSecurityContext failed. The Windows error code indicates the cause of failure. The logon attempt failed [CLIENT: x.x.x.x] Concerning the instance, everything is started and restarted without any extra error.

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• Android: ActivityThread.performLaunchActivity error

  - by fordays

  Hi, I'm getting an ActivityThread.performLaunchActivity(ActivityThread$ActivityRecord,Intent) error each time I boot up my program in the debugger. The program won't even start up! Any help would be greatly appreciated! I'm very new to this environment. Let me know if you need anymore information/code to help me out. Here is my logcat: 06-09 11:16:26.848: ERROR/vold(27): Error opening switch name path '/sys/class/switch/test2' (No such file or directory) 06-09 11:16:26.848: ERROR/vold(27): Error bootstrapping switch '/sys/class/switch/test2' (No such file or directory) 06-09 11:16:26.848: ERROR/vold(27): Error opening switch name path '/sys/class/switch/test' (No such file or directory) 06-09 11:16:26.848: ERROR/vold(27): Error bootstrapping switch '/sys/class/switch/test' (No such file or directory) 06-09 11:16:37.887: ERROR/MemoryHeapBase(53): error opening /dev/pmem: No such file or directory 06-09 11:16:37.887: ERROR/SurfaceFlinger(53): Couldn't open /sys/power/wait_for_fb_sleep or /sys/power/wait_for_fb_wake 06-09 11:16:37.927: ERROR/libEGL(53): couldn't load <libhgl.so> library (Cannot load library: load_library[984]: Library 'libhgl.so' not found) 06-09 11:16:38.407: ERROR/libEGL(64): couldn't load <libhgl.so> library (Cannot load library: load_library[984]: Library 'libhgl.so' not found) 06-09 11:16:41.358: ERROR/BatteryService(53): Could not open '/sys/class/power_supply/usb/online' 06-09 11:16:41.367: ERROR/BatteryService(53): Could not open '/sys/class/power_supply/battery/batt_vol' 06-09 11:16:41.367: ERROR/BatteryService(53): Could not open '/sys/class/power_supply/battery/batt_temp' 06-09 11:16:41.667: ERROR/EventHub(53): could not get driver version for /dev/input/mouse0, Not a typewriter 06-09 11:16:41.667: ERROR/EventHub(53): could not get driver version for /dev/input/mice, Not a typewriter 06-09 11:16:41.797: ERROR/System(53): Failure starting core service 06-09 11:16:41.797: ERROR/System(53): java.lang.SecurityException 06-09 11:16:41.797: ERROR/System(53): at android.os.BinderProxy.transact(Native Method) 06-09 11:16:41.797: ERROR/System(53): at android.os.ServiceManagerProxy.addService(ServiceManagerNative.java:146) 06-09 11:16:41.797: ERROR/System(53): at android.os.ServiceManager.addService(ServiceManager.java:72) 06-09 11:16:41.797: ERROR/System(53): at com.android.server.ServerThread.run(SystemServer.java:162) 06-09 11:16:41.797: ERROR/AndroidRuntime(53): Crash logging skipped, no checkin service 06-09 11:16:42.777: ERROR/LockPatternKeyguardView(53): Failed to bind to GLS while checking for account 06-09 11:16:46.557: ERROR/ActivityThread(111): Failed to find provider info for com.google.settings 06-09 11:16:46.577: ERROR/ActivityThread(111): Failed to find provider info for com.google.settings 06-09 11:16:49.087: ERROR/ApplicationContext(53): Couldn't create directory for SharedPreferences file shared_prefs/wallpaper-hints.xml 06-09 11:16:51.146: ERROR/ActivityThread(108): Failed to find provider info for android.server.checkin 06-09 11:16:54.266: ERROR/ActivityThread(108): Failed to find provider info for android.server.checkin 06-09 11:16:54.416: ERROR/ActivityThread(108): Failed to find provider info for android.server.checkin 06-09 11:16:56.336: ERROR/MediaPlayerService(31): Couldn't open fd for content://settings/system/notification_sound 06-09 11:16:56.356: ERROR/MediaPlayer(53): Unable to to create media player 06-09 11:16:56.637: ERROR/AndroidRuntime(201): Uncaught handler: thread main exiting due to uncaught exception 06-09 11:16:56.757: ERROR/AndroidRuntime(201): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.svgeeks.kidneytest/com.svgeeks.kidneytest.KidneyTest}: java.lang.ClassCastException: android.widget.EditText 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2401) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at android.app.ActivityThread.access$2100(ActivityThread.java:116) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at android.os.Handler.dispatchMessage(Handler.java:99) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at android.os.Looper.loop(Looper.java:123) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at android.app.ActivityThread.main(ActivityThread.java:4203) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at java.lang.reflect.Method.invokeNative(Native Method) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at java.lang.reflect.Method.invoke(Method.java:521) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at dalvik.system.NativeStart.main(Native Method) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): Caused by: java.lang.ClassCastException: android.widget.EditText 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at com.svgeeks.kidneytest.KidneyTest.onCreate(KidneyTest.java:57) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2364) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): ... 11 more 06-09 11:16:56.876: ERROR/dalvikvm(201): Unable to open stack trace file '/data/anr/traces.txt': Permission denied

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• Error on writing data to DVD

  - by sijith

  Hi, From past 1 week i stuck on this please help me i am attaching code. bool DVDBurner::Burner() { m_hResult = CoCreateInstance(__uuidof(MsftDiscFormat2Data), NULL, CLSCTX_INPROC_SERVER, __uuidof(IDiscFormat2Data), (void**)&m_discFormatData); if (!SUCCEEDED(m_hResult)) { qDebug()<<"Unable to Initialize IDiscFormat2Data "; return false; } m_hResult = CoCreateInstance(__uuidof(MsftDiscRecorder2), NULL, CLSCTX_INPROC_SERVER, __uuidof(IDiscRecorder2), (void**)&m_discRecorder); if (FAILED(m_hResult)) { qDebug()<<"Unable to Initialize IDiscRecorder2 Data "; return false; } BSTR bstrDeviceName; HRESULT hr = S_OK; BOOL bComInitialised; UINT iCounter = 0; LONG lValue = 0; LONG iCount; bComInitialised = SUCCEEDED(CoInitializeEx(0, COINIT_MULTITHREADED)); // Create an object of IDiscMaster2 if (SUCCEEDED(hr)){ CoCreateInstance( CLSID_MsftDiscMaster2, NULL, CLSCTX_ALL, IID_PPV_ARGS(&discMaster) ); if(FAILED(hr)){ qDebug()<<"\nUnsuccessful in creating an instance of CLSID_MsftDiscMaster2.\n\nError returned: 0x%x\n"<<hr; return 0; } } /////////////////////////// Get the number of drives/////////////////////////////// if (SUCCEEDED(hr)){ hr = discMaster->get_Count(&lValue); if (SUCCEEDED(hr)){ printf("lValue %d\n\n",lValue); } } ////////////////////////// Print all the optical drives attached to the system//// if (SUCCEEDED(hr)){ for(iCount = 0; iCount < lValue; iCount++) { hr = discMaster->get_Item(iCount, &bstrDeviceName); qDebug()<<"\nUnique identifier of the disc device associated with index"<< iCount<< bstrDeviceName; } } m_hResult = m_discRecorder->InitializeDiscRecorder(bstrDeviceName); if (!SUCCEEDED(m_hResult)) { qDebug()<<"IDiscFormat2Data->InitializeDiscRecorder Failed "; return false; } LPCWSTR pszFile=L"D:\\Test\\output.txt"; ULONGLONG mediaSize = 0; mediaSize=GetSizeOnDisc(pszFile); IStream* dataStream = NULL; if (dataStream == NULL) { SHCreateStreamOnFileEx(pszFile, STGM_READ|STGM_SHARE_DENY_NONE|STGM_DELETEONRELEASE, FILE_ATTRIBUTE_NORMAL, FALSE,NULL, &dataStream); } m_hResult = m_discFormatData->put_Recorder(GetInterface()); if (!SUCCEEDED(m_hResult)) { qDebug()<<"IDiscFormat2Data->put_Recorder Failed ";return false;} char *ansistr = "DVDBurner"; int a = lstrlenA(ansistr); BSTR unicodestr = SysAllocStringLen(NULL, a); ::MultiByteToWideChar(CP_ACP, 0, ansistr, a, unicodestr, a); m_hResult = m_discFormatData->put_ClientName(unicodestr); if (FAILED(m_hResult)){qDebug()<<"Unable to put_ClientName(buf_bstr)";return false;} m_hResult = m_discFormatData->Write(dataStream); // Here i am getting error 0xc0aa0403 if (FAILED(m_hResult)){printf("Unable to m_discFormatData- >Write::::Error:0x%08x",m_hResult); return false;} discMaster->Release(); CoUninitialize(); bComInitialised = FALSE; return 0; } ULONGLONG DVDBurner::GetSizeOnDisc(LPCWSTR pszFile) { CFileStatus status; if (CFile::GetStatus(pszFile, status)) { if (status.m_size > 0) { return ((status.m_size / SECTOR_SIZE) + 1) * SECTOR_SIZE; } } return 0; }

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• Problems with shutting down JBoss in Eclipse if I change JNDI port

  - by Balint Pato

  1st phase I have a problem shutting down my running JBoss instance under Eclipse since I changed the JNDI port of JBoss. Of course I can shut it down from the console view but not with the stop button (it still searches JNDI port at the default 1099 port). I'm looking forward to any solutions. Thank you! Used environment: JBoss 4.0.2 (using default) Eclipse 3.4.0. (using JBoss Tools 2.1.1.GA) Default ports: 1098, 1099 Changed ports: 11098, 11099 I changed the following part in jbosspath/server/default/conf/jboss-service.xml: <!-- ==================================================================== --> <!-- JNDI --> <!-- ==================================================================== --> <mbean code="org.jboss.naming.NamingService" name="jboss:service=Naming" xmbean-dd="resource:xmdesc/NamingService-xmbean.xml"> <!-- The call by value mode. true if all lookups are unmarshalled using the caller's TCL, false if in VM lookups return the value by reference. --> <attribute name="CallByValue">false</attribute> <!-- The listening port for the bootstrap JNP service. Set this to -1 to run the NamingService without the JNP invoker listening port. --> <attribute name="Port">11099</attribute> <!-- The bootstrap JNP server bind address. This also sets the default RMI service bind address. Empty == all addresses --> <attribute name="BindAddress">${jboss.bind.address}</attribute> <!-- The port of the RMI naming service, 0 == anonymous --> <attribute name="RmiPort">11098</attribute> <!-- The RMI service bind address. Empty == all addresses --> <attribute name="RmiBindAddress">${jboss.bind.address}</attribute> <!-- The thread pool service used to control the bootstrap lookups --> <depends optional-attribute-name="LookupPool" proxy-type="attribute">jboss.system:service=ThreadPool</depends> </mbean> <mbean code="org.jboss.naming.JNDIView" name="jboss:service=JNDIView" xmbean-dd="resource:xmdesc/JNDIView-xmbean.xml"> </mbean> Eclipse setup: About my JBoss Tools preferences: I had a previous version, I got this problem, I read about some bugfix in JbossTools, so updated to 2.1.1.GA. Now the buttons changed, and I've got a new preferences view, but I cannot modify anything...seems to be abnormal as well: Error dialog: The stacktrace: javax.naming.CommunicationException: Could not obtain connection to any of these urls: localhost:1099 [Root exception is javax.naming.CommunicationException: Failed to connect to server localhost:1099 [Root exception is javax.naming.ServiceUnavailableException: Failed to connect to server localhost:1099 [Root exception is java.net.ConnectException: Connection refused: connect]]] at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1385) at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:579) at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:572) at javax.naming.InitialContext.lookup(InitialContext.java:347) at org.jboss.Shutdown.main(Shutdown.java:202) Caused by: javax.naming.CommunicationException: Failed to connect to server localhost:1099 [Root exception is javax.naming.ServiceUnavailableException: Failed to connect to server localhost:1099 [Root exception is java.net.ConnectException: Connection refused: connect]] at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:254) at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1370) ... 4 more Caused by: javax.naming.ServiceUnavailableException: Failed to connect to server localhost:1099 [Root exception is java.net.ConnectException: Connection refused: connect] at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:228) ... 5 more Caused by: java.net.ConnectException: Connection refused: connect at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:305) at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:171) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:158) at java.net.Socket.connect(Socket.java:452) at java.net.Socket.connect(Socket.java:402) at java.net.Socket.<init>(Socket.java:309) at java.net.Socket.<init>(Socket.java:211) at org.jnp.interfaces.TimedSocketFactory.createSocket(TimedSocketFactory.java:69) at org.jnp.interfaces.TimedSocketFactory.createSocket(TimedSocketFactory.java:62) at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:224) ... 5 more Exception in thread "main" 2nd phase: After creating a new Server in File/new/other/server, it did appear in the preferences tab. Now the stop button is working (the server receives the shutdown messages without any additional modification of the jndi port -- there is no opportunity for it now) but it still throws an error message, though different, it's without exception stack trace: "Server JBoss 4.0 Server failed to stop."

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• Maven changelog plugin with Mercurial problem

  - by doom2.wad

  I have configured my Maven2 project to generate a changelog report from a Mercurial repository (accessible via file:// protocol) but the goal execution fails with the following message: + Error stacktraces are turned on. [INFO] Scanning for projects... [INFO] Searching repository for plugin with prefix: 'changelog'. [INFO] ------------------------------------------------------------------------ [INFO] Building Phobos3 Prototype [INFO] task-segment: [changelog:changelog] [INFO] ------------------------------------------------------------------------ [INFO] [changelog:changelog {execution: default-cli}] [INFO] Generating changed sets xml to: D:\Documents and Settings\501845922\Workspace\phobos3.prototype\target\changelog.xml [INFO] EXECUTING: hg log --verbose [WARNING] Could not figure out: abort: Invalid argument [ERROR] EXECUTION FAILED Execution of cmd : log failed with exit code: -1. Working directory was: D:\Documents and Settings\501845922\Workspace\phobos3.prototype Your Hg installation seems to be valid and complete. Hg version: 1.4.3+20100201 (OK) [ERROR] Provider message: [ERROR] EXECUTION FAILED Execution of cmd : log failed with exit code: -1. Working directory was: D:\Documents and Settings\501845922\Workspace\phobos3.prototype Your Hg installation seems to be valid and complete. Hg version: 1.4.3+20100201 (OK) [ERROR] Command output: [ERROR] [INFO] ------------------------------------------------------------------------ [ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] An error has occurred in Change Log report generation. Embedded error: An error has occurred during changelog command : Command failed. [INFO] ------------------------------------------------------------------------ [INFO] Trace org.apache.maven.lifecycle.LifecycleExecutionException: An error has occurred in Change Log report generation. at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:719) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandaloneGoal(DefaultLifecycleExecutor.java:569) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:539) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:387) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:348) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:180) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138) at org.apache.maven.cli.MavenCli.main(MavenCli.java:362) at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315) at org.codehaus.classworlds.Launcher.launch(Launcher.java:255) at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430) at org.codehaus.classworlds.Launcher.main(Launcher.java:375) Caused by: org.apache.maven.plugin.MojoExecutionException: An error has occurred in Change Log report generation. at org.apache.maven.reporting.AbstractMavenReport.execute(AbstractMavenReport.java:79) at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694) ... 17 more Caused by: org.apache.maven.reporting.MavenReportException: An error has occurred during changelog command : at org.apache.maven.plugin.changelog.ChangeLogReport.generateChangeSetsFromSCM(ChangeLogReport.java:555) at org.apache.maven.plugin.changelog.ChangeLogReport.getChangedSets(ChangeLogReport.java:393) at org.apache.maven.plugin.changelog.ChangeLogReport.executeReport(ChangeLogReport.java:340) at org.apache.maven.reporting.AbstractMavenReport.generate(AbstractMavenReport.java:98) at org.apache.maven.reporting.AbstractMavenReport.execute(AbstractMavenReport.java:73) ... 19 more Caused by: org.apache.maven.plugin.MojoExecutionException: Command failed. at org.apache.maven.plugin.changelog.ChangeLogReport.checkResult(ChangeLogReport.java:705) at org.apache.maven.plugin.changelog.ChangeLogReport.generateChangeSetsFromSCM(ChangeLogReport.java:467) ... 23 more [INFO] ------------------------------------------------------------------------ [INFO] Total time: 3 seconds [INFO] Finished at: Thu Apr 29 17:10:06 CEST 2010 [INFO] Final Memory: 5M/10M [INFO] ------------------------------------------------------------------------ What did I miss in a configuration? (I hope it is a configuration problem not a Maven plugins related bug!:) My repository URL seems to be ok (the plugin has been complaining before, I fixed that up), I also set a date format for parsing (also been complaining, also fixed). target/changelog.xml being promised was not generated at all. Maven 2.2.1 Mercurial 1.4.3 Windows XP SP3 mvn scm:changelog command provides an expected output. Thanks for any suggestions, I haven't googled up anything (nor binged up;).

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• PPTP server stuck at "GRE: Bad checksum from pppd"

  - by user92516

  I am a network engineer having quite limited experience with Ubuntu. I have been following up these online instructions to set up a pptp server but without much luck to get it to work. My server is a vm running an Apple Xserve behind a Cisco firewall. I made sure tcp 1723 and GRE are opened for the box. Below is the syslog output, looks like I always got stuck at GRE: Bad checksum from pppd. I'm running Ubuntu 10.04. Sep 24 13:21:53 ubuntu pptpd[1231]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7) Sep 24 13:21:53 ubuntu pptpd[1231]: CTRL: Reaping child PPP[1232] Sep 24 13:21:53 ubuntu pptpd[1231]: CTRL: Client 166.137.85.165 control connection finished Sep 24 13:22:41 ubuntu pptpd[1276]: MGR: connections limit (100) reached, extra IP addresses ignored Sep 24 13:22:41 ubuntu pptpd[1277]: MGR: Manager process started Sep 24 13:22:41 ubuntu pptpd[1277]: MGR: Maximum of 100 connections available Sep 24 13:22:50 ubuntu pptpd[1278]: CTRL: Client 166.137.85.165 control connection started Sep 24 13:22:51 ubuntu pptpd[1278]: CTRL: Starting call (launching pppd, opening GRE) Sep 24 13:22:51 ubuntu pppd[1279]: Plugin /usr/lib/pptpd/pptpd-logwtmp.so loaded. Sep 24 13:22:51 ubuntu pppd[1279]: pppd 2.4.5 started by root, uid 0 Sep 24 13:22:51 ubuntu pppd[1279]: Using interface ppp0 Sep 24 13:22:51 ubuntu pppd[1279]: Connect: ppp0 <--> /dev/pts/1 Sep 24 13:22:51 ubuntu pptpd[1278]: GRE: Bad checksum from pppd. Sep 24 13:23:21 ubuntu pppd[1279]: LCP: timeout sending Config-Requests Sep 24 13:23:21 ubuntu pppd[1279]: Connection terminated. Sep 24 13:23:21 ubuntu pppd[1279]: Modem hangup Sep 24 13:23:21 ubuntu pppd[1279]: Exit. Sep 24 13:23:21 ubuntu pptpd[1278]: GRE: read(fd=6,buffer=805a540,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs Sep 24 13:23:21 ubuntu pptpd[1278]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7) Sep 24 13:23:21 ubuntu pptpd[1278]: CTRL: Reaping child PPP[1279] Sep 24 13:23:21 ubuntu pptpd[1278]: CTRL: Client 166.137.85.165 control connection finished

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• SQL SERVER – Resolving SQL Server Connection Errors – SQL in Sixty Seconds #030 – Video

  - by pinaldave

  One of the most famous errors related to SQL Server is about connecting to SQL Server itself. Here is how it goes, most of the time developers have worked with SQL Server and knows pretty much every error which they face during development language. However, hardly they install fresh SQL Server. As the installation of the SQL Server is a rare occasion unless you are DBA who is responsible for such an instance – the error faced during installations are pretty rare as well. I have earlier written an article about this which describes how to resolve the errors which are related to SQL Server connection. Even though the step by step directions are pretty simple there are many first time IT Professional who are not able to figure out how to resolve this error. I have quickly built a video which is covering most of the solutions related to resolving the connection error. In the Fix SQL Server Connection Error article following workarounds are described: SQL Server Services TCP/IP Settings Firewall Settings Enable Remote Connection Browser Services Firewall exception of sqlbrowser.exe Recreating Alias Related Tips in SQL in Sixty Seconds: SQL SERVER – FIX : ERROR : (provider: Named Pipes Provider, error: 40 – Could not open a connection to SQL Server) (Microsoft SQL Server, Error: ) SQL SERVER – Could not connect to TCP error code 10061: No connection could be made because the target machine actively refused it SQL SERVER – Connecting to Server Using Windows Authentication by SQLCMD SQL SERVER – Fix : Error: 15372 Failed to generate a ser instance od SQL Server due to a failure in starting the process for the user instance. The connection will be closed SQL SERVER – Dedicated Access Control for SQL Server Express Edition – An error occurred while obtaining the dedicated administrator connection (DAC) port. SQL SERVER – Fix : Error: 4064 – Cannot open user default database. Login failed. Login failed for user What would you like to see in the next SQL in Sixty Seconds video? Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Database, Pinal Dave, PostADay, SQL, SQL Authority, SQL in Sixty Seconds, SQL Query, SQL Scripts, SQL Server, SQL Server Management Studio, SQL Tips and Tricks, T SQL, Technology, Video Tagged: Excel

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• "Vidalia detected that the Tor software exited unexpectedly."

  - by Brian

  I can start and kill tor via command line, but I want to control it with Vidalia. The browser bundle works, but I'd rather not use it. This is the message log in vidalia: Sep 25 19:29:13.696 [Notice] Tor v0.2.3.22-rc (git-4a0c70a817797420) running on Linux. Sep 25 19:29:13.696 [Notice] Tor can't help you if you use it wrong! Learn how to be safe at https://www.torproject.org/download/download#warning Sep 25 19:29:13.696 [Notice] Read configuration file "/home/brian/.vidalia/torrc". Sep 25 19:29:13.697 [Notice] Initialized libevent version 2.0.16-stable using method epoll (with changelist). Good. Sep 25 19:29:13.697 [Notice] Opening Socks listener on 127.0.0.1:9050 Sep 25 19:29:13.697 [Warning] /var/run/tor is not owned by this user (brian, 1000) but by debian-tor (114). Perhaps you are running Tor as the wrong user? Sep 25 19:29:13.697 [Warning] Before Tor can create a control socket in "/var/run/tor/control", the directory "/var/run/tor" needs to exist, and to be accessible only by the user account that is running Tor. (On some Unix systems, anybody who can list a socket can connect to it, so Tor is being careful.) Sep 25 19:29:13.698 [Notice] Closing partially-constructed Socks listener on 127.0.0.1:9050 Sep 25 19:29:13.698 [Warning] Failed to parse/validate config: Failed to bind one of the listener ports. Sep 25 19:29:13.698 [Error] Reading config failed--see warnings above.

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• error X3501: 'main': entrypoint not found

  - by Pasha

  I am trying to learn DX10 by following this tutorial. However, my shader won't compile. Below is the detailed error message. Build started 9/10/2012 10:22:46 PM. 1>Project "D:\code\dx\Engine\Engine\Engine.vcxproj" on node 2 (Build target(s)). C:\Program Files (x86)\Windows Kits\8.0\bin\x86\fxc.exe /nologo /E"main" /Fo "D:\code\dx\Engine\Debug\color.cso" /Od /Zi color.fx 1>FXC : error X3501: 'main': entrypoint not found compilation failed; no code produced 1>Done Building Project "D:\code\dx\Engine\Engine\Engine.vcxproj" (Build target(s)) -- FAILED. Build FAILED. Time Elapsed 00:00:00.05 I can easily compile the downloaded code, but I want to know how to fix this error myself. My color.fx looks like this //////////////////////////////////////////////////////////////////////////////// // Filename: color.fx //////////////////////////////////////////////////////////////////////////////// ///////////// // GLOBALS // ///////////// matrix worldMatrix; matrix viewMatrix; matrix projectionMatrix; ////////////// // TYPEDEFS // ////////////// struct VertexInputType { float4 position : POSITION; float4 color : COLOR; }; struct PixelInputType { float4 position : SV_POSITION; float4 color : COLOR; }; //////////////////////////////////////////////////////////////////////////////// // Vertex Shader //////////////////////////////////////////////////////////////////////////////// PixelInputType ColorVertexShader(VertexInputType input) { PixelInputType output; // Change the position vector to be 4 units for proper matrix calculations. input.position.w = 1.0f; // Calculate the position of the vertex against the world, view, and projection matrices. output.position = mul(input.position, worldMatrix); output.position = mul(output.position, viewMatrix); output.position = mul(output.position, projectionMatrix); // Store the input color for the pixel shader to use. output.color = input.color; return output; } //////////////////////////////////////////////////////////////////////////////// // Pixel Shader //////////////////////////////////////////////////////////////////////////////// float4 ColorPixelShader(PixelInputType input) : SV_Target { return input.color; } //////////////////////////////////////////////////////////////////////////////// // Technique //////////////////////////////////////////////////////////////////////////////// technique10 ColorTechnique { pass pass0 { SetVertexShader(CompileShader(vs_4_0, ColorVertexShader())); SetPixelShader(CompileShader(ps_4_0, ColorPixelShader())); SetGeometryShader(NULL); } }

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• Troubleshooting SQL Azure Connectivity

  - by kaleidoscope

  Technorati Tags: Rituraj,Connectivity Issues with SQL Azure Troubleshooting SQL Azure Connectivity How to resolve some of the common connectivity error messages that you would see while connecting to SQL Azure A transport-level error has occurred when receiving results from the server. (Provider: TCP Provider, error: 0 - An existing connection was forcibly closed by the remote host.) System.Data.SqlClient.SqlException: Timeout expired.  The timeout period elapsed prior to completion of the operation or the server is not responding. The statement has been terminated. An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections Error: Microsoft SQL Native Client: Unable to complete login process due to delay in opening server connection. A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond. Some troubleshooting tips a) Verify Azure Firewall Settings and Service Availability     Reference: SQL Azure Firewall - http://msdn.microsoft.com/en-us/library/ee621782.aspx b) Verify that you can reach our Virtual IP     Reference: Telnet Troubleshooting Guide - http://technet.microsoft.com/en-us/library/cc753360(WS.10).aspx    Reference: How to Use TRACERT to Troubleshoot TCP/IP Problems in Windows - http://support.microsoft.com/kb/314868 c) Windows Firewall on the local machine     Frequently Asked Questions - http://msdn.microsoft.com/en-us/library/bb736261(VS.85).aspx     Reference: Windows Firewall with Advanced Security Getting Started Guide - http://technet.microsoft.com/en-us/library/cc748991(WS.10).aspx d) Other Firewall products     Reference: http://www.whatismyip.com/ e) Generate a Network Trace using Microsoft Network Monitor tool    Reference: How to capture network traffic with Network Monitor - http://support.microsoft.com/kb/148942 f) SQL Azure Denial of Service (DOS) Guard SQL Azure utilizes techniques to prevent denial of service attacks. If your connection is getting reset by our service due to a potential DOS attack you would  be able to see a three way handshake established and then a RESET in your network trace.

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• How to remove window applet from Gnome3?

  - by Filip Nowak

  I installed today window applet for Gnome3 from this webupd8 post. The effect of the installation shown in the picture. I tried apt-get remove --purge and nothing happens. How do I remove this window applet? http://i.stack.imgur.com/D1s9b.jpg When i try metacity --replace &unity [1] 3171 Checking if settings need to be migrated ...no Checking if internal files need to be migrated ...no Backend : gconf Integration : true Profile : default Adding plugins Skipping upgrade com.canonical.unity.unity.01.upgrade Skipping upgrade com.canonical.unity.unity.02.upgrade Initializing core options...done Initializing bailer options...done Initializing detection options...done Initializing composite options...done Initializing opengl options...done Initializing decor options...done Initializing move options...done Initializing vpswitch options...done Initializing gnomecompat options...done Initializing grid options...done Initializing mousepoll options...done Initializing place options...done Initializing resize options...done Initializing animation options...done Initializing wall options...done Initializing session options...done Initializing workarounds options...done Initializing wobbly options...done compiz (expo) - Warn: failed to bind image to texture Initializing expo options...done Initializing ezoom options...done Initializing staticswitcher options...done Initializing fade options...done Initializing scale options...done Screen geometry changed: 0x0x1920x1080 Initializing unityshell options...done DEBUG 2012-02-19 21:22:40 glib <unknown>:0 Setting to primary screen rect: x=0 y=0 w=1920 h=1080 WARN 2012-02-19 21:22:40 unity.favorites FavoriteStoreGSettings.cpp:138 Unable to load GDesktopAppInfo for 'bluefish.desktop' WARN 2012-02-19 21:22:40 unity.favorites FavoriteStoreGSettings.cpp:138 Unable to load GDesktopAppInfo for 'filezilla.desktop' WARN 2012-02-19 21:22:40 unity.favorites FavoriteStoreGSettings.cpp:138 Unable to load GDesktopAppInfo for 'gimp.desktop' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' Setting Update "texture_filter" Setting Update "sync_to_vblank" Setting Update "fullscreen_visual_bell" Setting Update "panel_opacity" Setting Update "launcher_opacity" Setting Update "icon_size" WARN 2012-02-19 21:23:32 unity.glib.dbusproxy GLibDBusProxy.cpp:255 Cannot call method InfoRequest proxy /com/canonical/unity/lens/applications does not exist WARN 2012-02-19 21:23:32 unity.glib.dbusproxy GLibDBusProxy.cpp:255 Cannot call method SetActive proxy /com/canonical/unity/lens/applications does not exist WARN 2012-02-19 21:23:32 unity.glib.dbusproxy GLibDBusProxy.cpp:255 Cannot call method InfoRequest proxy /com/canonical/unity/lens/commands does not exist WARN 2012-02-19 21:23:32 unity.glib.dbusproxy GLibDBusProxy.cpp:255 Cannot call method SetActive proxy /com/canonical/unity/lens/commands does not exist WARN 2012-02-19 21:23:32 unity.glib.dbusproxy GLibDBusProxy.cpp:255 Cannot call method InfoRequest proxy /com/canonical/unity/lens/files does not exist WARN 2012-02-19 21:23:32 unity.glib.dbusproxy GLibDBusProxy.cpp:255 Cannot call method SetActive proxy /com/canonical/unity/lens/files does not exist WARN 2012-02-19 21:23:32 unity.glib.dbusproxy GLibDBusProxy.cpp:255 Cannot call method InfoRequest proxy /com/canonical/unity/lens/music does not exist WARN 2012-02-19 21:23:32 unity.glib.dbusproxy GLibDBusProxy.cpp:255 Cannot call method SetActive proxy /com/canonical/unity/lens/music does not exist WARN 2012-02-19 21:23:33 unity.iconloader IconLoader.cpp:509 Unable to load contents of file:///usr/share/icons/unity-icon-theme/places/svg/category-available.svg: Blad podczas otwierania pliku: Nie ma takiego pliku ani katalogu WARN 2012-02-19 21:23:33 unity.iconloader IconLoader.cpp:509 Unable to load contents of file:///usr/share/icons/unity-icon-theme/places/svg/category-installed.svg: Blad podczas otwierania pliku: Nie ma takiego pliku ani katalogu

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• PCSX2 1.0.0 installation issues

  - by user205261

  I've followed all the tutorials I can find to get this emulator to work and I'm now getting this error. Granted I've gotten a lot further than when I started. Running 13.10. Just downloaded the Linux download file from the pcsx2 website and did the following in terminal: jonathan@Assassin:~$ sudo add-apt-repository ppa:gregory-hainaut/pcsx2.official.ppa [sudo] password for jonathan: The Official pcsx2 ppa, provided by the pcsx2 team. This ppa contains a regular package snapshot of pcsx2. We are not package experts, but we try to follow the debian policy. Press [ENTER] to continue or ctrl-c to cancel adding it gpg: keyring `/tmp/tmpe5fwdz/secring.gpg' created gpg: keyring `/tmp/tmpe5fwdz/pubring.gpg' created gpg: requesting key 7A617FF4 from hkp server keyserver.ubuntu.com gpg: /tmp/tmpe5fwdz/trustdb.gpg: trustdb created gpg: key 7A617FF4: public key "Launchpad official ppa for pcsx2 team" imported gpg: Total number processed: 1 gpg: imported: 1 (RSA: 1) OK jonathan@Assassin:~$ sudo apt-get update Err http://ppa.launchpad.net saucy/main amd64 Packages 404 Not Found Err http://ppa.launchpad.net saucy/main i386 Packages 404 Not Found Fetched 67.4 kB in 16s (3,977 B/s) W: Failed to fetch ppa.launchpad.net/gregory-hainaut/pcsx2.official.ppa/ubuntu/dists/saucy/main/binary-amd64/Packages 404 Not Found W: Failed to fetch ppa.launchpad.net/gregory-hainaut/pcsx2.official.ppa/ubuntu/dists/saucy/main/binary-i386/Packages 404 Not Found E: Some index files failed to download. They have been ignored, or old ones used instead. jonathan@Assassin:~$ sudo apt-get install pcsx2 Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package pcsx2 So I'm assuming I just need the way to get the two missing packages?

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• Nautilus crashes after Ubuntu Tweak Package Cleaner [fixed]

  - by Ka7anax

  Few days ago I started having some problems with nautilus. Basically when I'm trying to get into a folder it crashes. It's not happening all the time, but in 85% it does... Sometimes, after the crash all my desktop icons are also gone. The only thing that I think causes this is Ubuntu Tweak - I'm not sure, but the issues started after I did the Package cleaner from Ubuntu Tweaks... Any ideas? ------- EDIT 2 - IMPORTANT !!! ---------- It seems I fixed this problem doing these: 1) I uninstall this nautilus script - http://mundogeek.net/nautilus-scripts/#nautilus-send-gmail 2) I installed nautilus elementary So far is back to normal... If anything bad happens again I will come back! -------- EDIT 1 ---------- First time, after running the command (nautilus --quit; nautilus --no-desktop) 3 times all the system crashed (except the mouse, I could move the mouse). After restart I run it and obtain this: ----- Initializing nautilus-gdu extension Initializing nautilus-dropbox 0.6.7 (nautilus:2966): GConf-CRITICAL **: gconf_value_free: assertion value != NULL' failed (nautilus:2966): GConf-CRITICAL **: gconf_value_free: assertionvalue != NULL' failed Nautilus-Share-Message: Called "net usershare info" but it failed: 'net usershare' returned error 255: net usershare: cannot open usershare directory /var/lib/samba/usershares. Error No such file or directory Please ask your system administrator to enable user sharing. and then this: cristi@cris-laptop:~$ nautilus --quit; nautilus --no-desktop (nautilus:3810): Unique-DBus-WARNING **: Error while sending message: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.

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• Refactor This (Ugly Code)!

  - by Alois Kraus

  Ayende has put on his blog some ugly code to refactor. First and foremost it is nearly impossible to reason about other peoples code without knowing the driving forces behind the current code. It is certainly possible to make it much cleaner when potential sources of errors cannot happen in the first place due to good design. I can see what the intention of the code is but I do not know about every brittle detail if I am allowed to reorder things here and there to simplify things. So I decided to make it much simpler by identifying the different responsibilities of the methods and encapsulate it in different classes. The code we need to refactor seems to deal with a handler after a message has been sent to a message queue. The handler does complete the current transaction if there is any and does handle any errors happening there. If during the the completion of the transaction errors occur the transaction is at least disposed. We can enter the handler already in a faulty state where we try to deliver the complete event in any case and signal a failure event and try to resend the message again to the queue if it was not inside a transaction. All is decorated with many try/catch blocks, duplicated code and some state variables to route the program flow. It is hard to understand and difficult to reason about. In other words: This code is a mess and could be written by me if I was under pressure. Here comes to code we want to refactor:         private void HandleMessageCompletion(                                      Message message,                                      TransactionScope tx,                                      OpenedQueue messageQueue,                                      Exception exception,                                      Action<CurrentMessageInformation, Exception> messageCompleted,                                      Action<CurrentMessageInformation> beforeTransactionCommit)         {             var txDisposed = false;             if (exception == null)             {                 try                 {                     if (tx != null)                     {                         if (beforeTransactionCommit != null)                             beforeTransactionCommit(currentMessageInformation);                         tx.Complete();                         tx.Dispose();                         txDisposed = true;                     }                     try                     {                         if (messageCompleted != null)                             messageCompleted(currentMessageInformation, exception);                     }                     catch (Exception e)                     {                         Trace.TraceError("An error occured when raising the MessageCompleted event, the error will NOT affect the message processing"+ e);                     }                     return;                 }                 catch (Exception e)                 {                     Trace.TraceWarning("Failed to complete transaction, moving to error mode"+ e);                     exception = e;                 }             }             try             {                 if (txDisposed == false && tx != null)                 {                     Trace.TraceWarning("Disposing transaction in error mode");                     tx.Dispose();                 }             }             catch (Exception e)             {                 Trace.TraceWarning("Failed to dispose of transaction in error mode."+ e);             }             if (message == null)                 return;                 try             {                 if (messageCompleted != null)                     messageCompleted(currentMessageInformation, exception);             }             catch (Exception e)             {                 Trace.TraceError("An error occured when raising the MessageCompleted event, the error will NOT affect the message processing"+ e);             }               try             {                 var copy = MessageProcessingFailure;                 if (copy != null)                     copy(currentMessageInformation, exception);             }             catch (Exception moduleException)             {                 Trace.TraceError("Module failed to process message failure: " + exception.Message+                                              moduleException);             }               if (messageQueue.IsTransactional == false)// put the item back in the queue             {                 messageQueue.Send(message);             }         }     You can see quite some processing and handling going on there. Yes this looks like real world code one did put together to make things work and he does not trust his callbacks. I guess these are event handlers which are optional and the delegates were extracted from an event to call them back later when necessary.  Lets see what the author of this code did intend:          private void HandleMessageCompletion(             TransactionHandler transactionHandler,             MessageCompletionHandler handler,             CurrentMessageInformation messageInfo,             ErrorCollector errors             )         {               // commit current pending transaction             transactionHandler.CallHandlerAndCommit(messageInfo, errors);               // We have an error for a null message do not send completion event             if (messageInfo.CurrentMessage == null)                 return;               // Send completion event in any case regardless of errors             handler.OnMessageCompleted(messageInfo, errors);               // put message back if queue is not transactional             transactionHandler.ResendMessageOnError(messageInfo.CurrentMessage, errors);         }   I did not bother to write the intention here again since the code should be pretty self explaining by now. I have used comments to explain the still nontrivial procedure step by step revealing the real intention about all this complex program flow. The original complexity of the problem domain does not go away but by applying the techniques of SRP (Single Responsibility Principle) and some functional style but we can abstract the necessary complexity away in useful abstractions which make it much easier to reason about it. Since most of the method seems to deal with errors I thought it was a good idea to encapsulate the error state of our current message in an ErrorCollector object which stores all exceptions in a list along with a description what the error all was about in the exception itself. We can log it later or not depending on the log level or whatever. It is really just a simple list that encapsulates the current error state.          class ErrorCollector          {              List<Exception> _Errors = new List<Exception>();                public void Add(Exception ex, string description)              {                  ex.Data["Description"] = description;                  _Errors.Add(ex);              }                public Exception Last              {                  get                  {                      return _Errors.LastOrDefault();                  }              }                public bool HasError              {                  get                  {                      return _Errors.Count > 0;                  }              }          }   Since the error state is global we have two choices to store a reference in the other helper objects (TransactionHandler and MessageCompletionHandler)or pass it to the method calls when necessary. I did chose the latter one because a second argument does not hurt and makes it easier to reason about the overall state while the helper objects remain stateless and immutable which makes the helper objects much easier to understand and as a bonus thread safe as well. This does not mean that the stored member variables are stateless or thread safe as well but at least our helper classes are it. Most of the complexity is located the transaction handling I consider as a separate responsibility that I delegate to the TransactionHandler which does nothing if there is no transaction or Call the Before Commit Handler Commit Transaction Dispose Transaction if commit did throw In fact it has a second responsibility to resend the message if the transaction did fail. I did see a good fit there since it deals with transaction failures.          class TransactionHandler          {              TransactionScope _Tx;              Action<CurrentMessageInformation> _BeforeCommit;              OpenedQueue _MessageQueue;                public TransactionHandler(TransactionScope tx, Action<CurrentMessageInformation> beforeCommit, OpenedQueue messageQueue)              {                  _Tx = tx;                  _BeforeCommit = beforeCommit;                  _MessageQueue = messageQueue;              }                public void CallHandlerAndCommit(CurrentMessageInformation currentMessageInfo, ErrorCollector errors)              {                  if (_Tx != null && !errors.HasError)                  {                      try                      {                          if (_BeforeCommit != null)                          {                              _BeforeCommit(currentMessageInfo);                          }                            _Tx.Complete();                          _Tx.Dispose();                      }                      catch (Exception ex)                      {                          errors.Add(ex, "Failed to complete transaction, moving to error mode");                          Trace.TraceWarning("Disposing transaction in error mode");                          try                          {                              _Tx.Dispose();                          }                          catch (Exception ex2)                          {                              errors.Add(ex2, "Failed to dispose of transaction in error mode.");                          }                      }                  }              }                public void ResendMessageOnError(Message message, ErrorCollector errors)              {                  if (errors.HasError && !_MessageQueue.IsTransactional)                  {                      _MessageQueue.Send(message);                  }              }          } If we need to change the handling in the future we have a much easier time to reason about our application flow than before. After we did complete our transaction and called our callback we can call the completion handler which is the main purpose of the HandleMessageCompletion method after all. The responsiblity o the MessageCompletionHandler is to call the completion callback and the failure callback when some error has occurred.            class MessageCompletionHandler          {              Action<CurrentMessageInformation, Exception> _MessageCompletedHandler;              Action<CurrentMessageInformation, Exception> _MessageProcessingFailure;                public MessageCompletionHandler(Action<CurrentMessageInformation, Exception> messageCompletedHandler,                                              Action<CurrentMessageInformation, Exception> messageProcessingFailure)              {                  _MessageCompletedHandler = messageCompletedHandler;                  _MessageProcessingFailure = messageProcessingFailure;              }                  public void OnMessageCompleted(CurrentMessageInformation currentMessageInfo, ErrorCollector errors)              {                  try                  {                      if (_MessageCompletedHandler != null)                      {                          _MessageCompletedHandler(currentMessageInfo, errors.Last);                      }                  }                  catch (Exception ex)                  {                      errors.Add(ex, "An error occured when raising the MessageCompleted event, the error will NOT affect the message processing");                  }                    if (errors.HasError)                  {                      SignalFailedMessage(currentMessageInfo, errors);                  }              }                void SignalFailedMessage(CurrentMessageInformation currentMessageInfo, ErrorCollector errors)              {                  try                  {                      if (_MessageProcessingFailure != null)                          _MessageProcessingFailure(currentMessageInfo, errors.Last);                  }                  catch (Exception moduleException)                  {                      errors.Add(moduleException, "Module failed to process message failure");                  }              }            }   If for some reason I did screw up the logic and we need to call the completion handler from our Transaction handler we can simple add to the CallHandlerAndCommit method a third argument to the MessageCompletionHandler and we are fine again. If the logic becomes even more complex and we need to ensure that the completed event is triggered only once we have now one place the completion handler to capture the state. During this refactoring I simple put things together that belong together and came up with useful abstractions. If you look at the original argument list of the HandleMessageCompletion method I have put many things together:   Original Arguments New Arguments Encapsulate Message message CurrentMessageInformation messageInfo         Message message TransactionScope tx Action<CurrentMessageInformation> beforeTransactionCommit OpenedQueue messageQueue TransactionHandler transactionHandler        TransactionScope tx        OpenedQueue messageQueue        Action<CurrentMessageInformation> beforeTransactionCommit Exception exception,             ErrorCollector errors Action<CurrentMessageInformation, Exception> messageCompleted MessageCompletionHandler handler          Action<CurrentMessageInformation, Exception> messageCompleted          Action<CurrentMessageInformation, Exception> messageProcessingFailure The reason is simple: Put the things that have relationships together and you will find nearly automatically useful abstractions. I hope this makes sense to you. If you see a way to make it even more simple you can show Ayende your improved version as well.

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