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• Troubleshooting latency spikes on ESXi NFS datastores

  - by exo_cw

  I'm experiencing fsync latencies of around five seconds on NFS datastores in ESXi, triggered by certain VMs. I suspect this might be caused by VMs using NCQ/TCQ, as this does not happen with virtual IDE drives. This can be reproduced using fsync-tester (by Ted Ts'o) and ioping. For example using a Grml live system with a 8GB disk: Linux 2.6.33-grml64: root@dynip211 /mnt/sda # ./fsync-tester fsync time: 5.0391 fsync time: 5.0438 fsync time: 5.0300 fsync time: 0.0231 fsync time: 0.0243 fsync time: 5.0382 fsync time: 5.0400 [... goes on like this ...] That is 5 seconds, not milliseconds. This is even creating IO-latencies on a different VM running on the same host and datastore: root@grml /mnt/sda/ioping-0.5 # ./ioping -i 0.3 -p 20 . 4096 bytes from . (reiserfs /dev/sda): request=1 time=7.2 ms 4096 bytes from . (reiserfs /dev/sda): request=2 time=0.9 ms 4096 bytes from . (reiserfs /dev/sda): request=3 time=0.9 ms 4096 bytes from . (reiserfs /dev/sda): request=4 time=0.9 ms 4096 bytes from . (reiserfs /dev/sda): request=5 time=4809.0 ms 4096 bytes from . (reiserfs /dev/sda): request=6 time=1.0 ms 4096 bytes from . (reiserfs /dev/sda): request=7 time=1.2 ms 4096 bytes from . (reiserfs /dev/sda): request=8 time=1.1 ms 4096 bytes from . (reiserfs /dev/sda): request=9 time=1.3 ms 4096 bytes from . (reiserfs /dev/sda): request=10 time=1.2 ms 4096 bytes from . (reiserfs /dev/sda): request=11 time=1.0 ms 4096 bytes from . (reiserfs /dev/sda): request=12 time=4950.0 ms When I move the first VM to local storage it looks perfectly normal: root@dynip211 /mnt/sda # ./fsync-tester fsync time: 0.0191 fsync time: 0.0201 fsync time: 0.0203 fsync time: 0.0206 fsync time: 0.0192 fsync time: 0.0231 fsync time: 0.0201 [... tried that for one hour: no spike ...] Things I've tried that made no difference: Tested several ESXi Builds: 381591, 348481, 260247 Tested on different hardware, different Intel and AMD boxes Tested with different NFS servers, all show the same behavior: OpenIndiana b147 (ZFS sync always or disabled: no difference) OpenIndiana b148 (ZFS sync always or disabled: no difference) Linux 2.6.32 (sync or async: no difference) It makes no difference if the NFS server is on the same machine (as a virtual storage appliance) or on a different host Guest OS tested, showing problems: Windows 7 64 Bit (using CrystalDiskMark, latency spikes happen mostly during preparing phase) Linux 2.6.32 (fsync-tester + ioping) Linux 2.6.38 (fsync-tester + ioping) I could not reproduce this problem on Linux 2.6.18 VMs. Another workaround is to use virtual IDE disks (vs SCSI/SAS), but that is limiting performance and the number of drives per VM. Update 2011-06-30: The latency spikes seem to happen more often if the application writes in multiple small blocks before fsync. For example fsync-tester does this (strace output): pwrite(3, "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"..., 1048576, 0) = 1048576 fsync(3) = 0 ioping does this while preparing the file: [lots of pwrites] pwrite(3, "********************************"..., 4096, 1036288) = 4096 pwrite(3, "********************************"..., 4096, 1040384) = 4096 pwrite(3, "********************************"..., 4096, 1044480) = 4096 fsync(3) = 0 The setup phase of ioping almost always hangs, while fsync-tester sometimes works fine. Is someone capable of updating fsync-tester to write multiple small blocks? My C skills suck ;) Update 2011-07-02: This problem does not occur with iSCSI. I tried this with the OpenIndiana COMSTAR iSCSI server. But iSCSI does not give you easy access to the VMDK files so you can move them between hosts with snapshots and rsync. Update 2011-07-06: This is part of a wireshark capture, captured by a third VM on the same vSwitch. This all happens on the same host, no physical network involved. I've started ioping around time 20. There were no packets sent until the five second delay was over: No. Time Source Destination Protocol Info 1082 16.164096 192.168.250.10 192.168.250.20 NFS V3 WRITE Call (Reply In 1085), FH:0x3eb56466 Offset:0 Len:84 FILE_SYNC 1083 16.164112 192.168.250.10 192.168.250.20 NFS V3 WRITE Call (Reply In 1086), FH:0x3eb56f66 Offset:0 Len:84 FILE_SYNC 1084 16.166060 192.168.250.20 192.168.250.10 TCP nfs > iclcnet-locate [ACK] Seq=445 Ack=1057 Win=32806 Len=0 TSV=432016 TSER=769110 1085 16.167678 192.168.250.20 192.168.250.10 NFS V3 WRITE Reply (Call In 1082) Len:84 FILE_SYNC 1086 16.168280 192.168.250.20 192.168.250.10 NFS V3 WRITE Reply (Call In 1083) Len:84 FILE_SYNC 1087 16.168417 192.168.250.10 192.168.250.20 TCP iclcnet-locate > nfs [ACK] Seq=1057 Ack=773 Win=4163 Len=0 TSV=769110 TSER=432016 1088 23.163028 192.168.250.10 192.168.250.20 NFS V3 GETATTR Call (Reply In 1089), FH:0x0bb04963 1089 23.164541 192.168.250.20 192.168.250.10 NFS V3 GETATTR Reply (Call In 1088) Directory mode:0777 uid:0 gid:0 1090 23.274252 192.168.250.10 192.168.250.20 TCP iclcnet-locate > nfs [ACK] Seq=1185 Ack=889 Win=4163 Len=0 TSV=769821 TSER=432716 1091 24.924188 192.168.250.10 192.168.250.20 RPC Continuation 1092 24.924210 192.168.250.10 192.168.250.20 RPC Continuation 1093 24.924216 192.168.250.10 192.168.250.20 RPC Continuation 1094 24.924225 192.168.250.10 192.168.250.20 RPC Continuation 1095 24.924555 192.168.250.20 192.168.250.10 TCP nfs > iclcnet_svinfo [ACK] Seq=6893 Ack=1118613 Win=32625 Len=0 TSV=432892 TSER=769986 1096 24.924626 192.168.250.10 192.168.250.20 RPC Continuation 1097 24.924635 192.168.250.10 192.168.250.20 RPC Continuation 1098 24.924643 192.168.250.10 192.168.250.20 RPC Continuation 1099 24.924649 192.168.250.10 192.168.250.20 RPC Continuation 1100 24.924653 192.168.250.10 192.168.250.20 RPC Continuation 2nd Update 2011-07-06: There seems to be some influence from TCP window sizes. I was not able to reproduce this problem using FreeNAS (based on FreeBSD) as a NFS server. The wireshark captures showed TCP window updates to 29127 bytes in regular intervals. I did not see them with OpenIndiana, which uses larger window sizes by default. I can no longer reproduce this problem if I set the following options in OpenIndiana and restart the NFS server: ndd -set /dev/tcp tcp_recv_hiwat 8192 # default is 128000 ndd -set /dev/tcp tcp_max_buf 1048575 # default is 1048576 But this kills performance: Writing from /dev/zero to a file with dd_rescue goes from 170MB/s to 80MB/s. Update 2011-07-07: I've uploaded this tcpdump capture (can be analyzed with wireshark). In this case 192.168.250.2 is the NFS server (OpenIndiana b148) and 192.168.250.10 is the ESXi host. Things I've tested during this capture: Started "ioping -w 5 -i 0.2 ." at time 30, 5 second hang in setup, completed at time 40. Started "ioping -w 5 -i 0.2 ." at time 60, 5 second hang in setup, completed at time 70. Started "fsync-tester" at time 90, with the following output, stopped at time 120: fsync time: 0.0248 fsync time: 5.0197 fsync time: 5.0287 fsync time: 5.0242 fsync time: 5.0225 fsync time: 0.0209 2nd Update 2011-07-07: Tested another NFS server VM, this time NexentaStor 3.0.5 community edition: Shows the same problems. Update 2011-07-31: I can also reproduce this problem on the new ESXi build 4.1.0.433742.

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• RHEL 6.x on Rackspace Cloud and Dedicated hardware experiencing Redis Timeouts

  - by zhallett

  I just recently set up a mixture of RHEL 6.1 Rackspace cloud hosts and RHEL 6.2 dedicated hosts using Rackconnect. I am experiencing intermittent Redis timeouts from within our Rails 3.2.8 app with Redis 2.4.16 running on the RHEL 6.2 dedicated hosts. There is no network latency or packet loss. Also there are no errors on any interfaces on our cloud or dedicated servers or on the managed firewall from Rackspace. When Redis timesout, there is nothing logged within redis even though it is set up to do debug logging. The only error we receive is from Airbrake saying there was a Redis timeout. Network topology: RHEL 6.1 cloud hosts <--> Alert logic IDS <--> Cisco ASA 5510 <--> RHEL 6.2 dedicated hosts (web nodes) (two way NAT) (db hosts running redis) Ping from db host to web host: 64 bytes from 10.181.230.180: icmp_seq=998 ttl=64 time=0.520 ms 64 bytes from 10.181.230.180: icmp_seq=999 ttl=64 time=0.579 ms 64 bytes from 10.181.230.180: icmp_seq=1000 ttl=64 time=0.482 ms --- web1.xxxxxx.com ping statistics --- 1000 packets transmitted, 1000 received, 0% packet loss, time 999007ms rtt min/avg/max/mdev = 0.359/0.535/5.684/0.200 ms Ping from web host to db host: 64 bytes from 192.168.100.26: icmp_seq=998 ttl=64 time=0.544 ms 64 bytes from 192.168.100.26: icmp_seq=999 ttl=64 time=0.452 ms 64 bytes from 192.168.100.26: icmp_seq=1000 ttl=64 time=0.529 ms --- data1.xxxxxx.com ping statistics --- 1000 packets transmitted, 1000 received, 0% packet loss, time 999017ms rtt min/avg/max/mdev = 0.358/0.499/6.120/0.201 ms Redis config: daemonize yes pidfile /var/run/redis/6379/redis_6379.pid port 6379 timeout 0 loglevel debug logfile /var/lib/redis/log syslog-enabled yes syslog-ident redis-6379 syslog-facility local0 databases 16 save 900 1 save 300 10 save 60 10000 rdbcompression yes dbfilename dump-6379.rdb dir /var/lib/redis maxclients 10000 maxmemory-policy volatile-lru maxmemory-samples 3 appendfilename appendonly-6379.aof appendfsync everysec no-appendfsync-on-rewrite no auto-aof-rewrite-percentage 100 auto-aof-rewrite-min-size 64mb slowlog-log-slower-than 10000 slowlog-max-len 1024 vm-enabled no vm-swap-file /tmp/redis.swap vm-max-memory 0 vm-page-size 32 vm-pages 134217728 vm-max-threads 4 hash-max-zipmap-entries 512 hash-max-zipmap-value 64 list-max-ziplist-entries 512 list-max-ziplist-value 64 set-max-intset-entries 512 zset-max-ziplist-entries 128 zset-max-ziplist-value 64 activerehashing yes Redis-cli info: redis-cli info redis_version:2.4.16 redis_git_sha1:00000000 redis_git_dirty:0 arch_bits:64 multiplexing_api:epoll gcc_version:4.4.6 process_id:4174 uptime_in_seconds:79346 uptime_in_days:0 lru_clock:1064644 used_cpu_sys:13.08 used_cpu_user:19.81 used_cpu_sys_children:1.56 used_cpu_user_children:7.69 connected_clients:167 connected_slaves:0 client_longest_output_list:0 client_biggest_input_buf:0 blocked_clients:6 used_memory:15060312 used_memory_human:14.36M used_memory_rss:22061056 used_memory_peak:15265928 used_memory_peak_human:14.56M mem_fragmentation_ratio:1.46 mem_allocator:jemalloc-3.0.0 loading:0 aof_enabled:0 changes_since_last_save:166 bgsave_in_progress:0 last_save_time:1352823542 bgrewriteaof_in_progress:0 total_connections_received:286 total_commands_processed:507254 expired_keys:0 evicted_keys:0 keyspace_hits:1509 keyspace_misses:65167 pubsub_channels:0 pubsub_patterns:0 latest_fork_usec:690 vm_enabled:0 role:master db0:keys=6,expires=0 edit 1: add redis-cli info output

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• Server 2008, 2 NICs, 2 fixed IPs - big delays using internet

  - by user46055

  Hi geniuses I have an all in one Windows 2008 server, configured with AD/DHCP/DNS/RRAS - all set up with wizards and no specific tweaking. The server has 2 network adapters : one of which ("MyWAN") is plugged into our office's internet connection, the other ("MyLAN") is plugged into a local switch, which is also where all our desktops are connected. So this one server is doing everything. When first set up, MyLAN had a fixed IP of 192.168.2.1 and served the desktops with DHCP scope 192.168.2.50-99. It also told them to use 192.168.2.1 as DNS and gateway. MyWAN was setup to take its IP etc from DHCP, being handled by the building's router and ADSL modem etc. All desktops were setup to use DHCP. This all worked perfectly fine, until I recently changed MyWAN to have a static IP (I wanted to access it from home, and needed to give it a static IP to port map in the building's router). Things still work, but there is now a long delay when accessing the internet. The actual speed is as before when downloading, but there is a pause of 3-6 secs when connecting to new hosts (for example if I browse to slashdot from either a desktop or the server itself, it'll hang on connecting to slashdot.org, hang again on connecting to *.fsdn, *.google-analytics.com and all the other hosts referenced from the main page). If I ping slashdot.org from the server, I get the following : Pinging slashdot.org [216.34.181.45] with 32 bytes of data: Reply from 192.168.2.1: Destination host unreachable. Reply from 216.34.181.45: bytes=32 time=99ms TTL=239 Reply from 216.34.181.45: bytes=32 time=100ms TTL=239 Reply from 216.34.181.45: bytes=32 time=101ms TTL=239 Pinging anywhere external always seems to hit 192.168.2.1 first, which doesn't seem right. Trying tracert from the server gives the following : Tracing route to slashdot.org [216.34.181.45] over a maximum of 30 hops: 1 MYSERVER01.intranet [192.168.2.1] reports: Destination host unreachable Trying tracert from a desktop gives the following : Tracing route to slashdot.org [216.34.181.45] over a maximum of 30 hops: 1 <1 ms * <1 ms MYSERVER [192.168.2.1] 2 * * * Request timed out. 3 6 ms 6 ms 6 ms dsl-gw1.ge.mer.uk.webtapestry.net [217.151.111.17] 4 38 ms 239 ms 251 ms gw-router.ge.mer.uk.webtapestry.net [217.151.111.13] ...and then all is fine after that. I think that DNS is working fine because the domain names are getting translated to correct IPs immediately. DHCP seems to be okay? So perhaps it's something up with my RRAS setup - although I can't see any option during the setup wizard which I would have filled in differently. I've also tried changing the binding order of the two network connections, to prioritise MyWAN, but that doesn't seem to have done anything. Any idea what's up? Many thanks - Rob

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• Save Word document to clipboard

  - by uwe

  I often come into the following situation: Get an email with attachment in MS Outlook Open that attachment in MS Word Starting to edit the document in MS Word Start replying to the email in MS Outlook Getting the edited document into my reply I have to save that file to disk and then drag it as attachment. I would think of a short way to get that document as attachement in the newly generated email. Is there a way to implement a save location as clipboard or just a copy to clipboard (the document, not the content)?

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• seaudit report detail

  - by user1014130

  I've just started using selinux in the last 6 months and am getting to grips with it. However, using sealert on a new CENTOS 6 server, Im not getting the level of detail I was with CENTOS 5. To illustrate: Running sealert -a /var/log/audit/audit.log On CENTOS 5 I get: Summary: SELinux is preventing postdrop (postfix_postdrop_t) "getattr" to /var/log/httpd/error_log (httpd_log_t). Detailed Description: SELinux denied access requested by postdrop. It is not expected that this access is required by postdrop and this access may signal an intrusion attempt. It is also possible that the specific version or configuration of the application is causing it to require additional access. Allowing Access: Sometimes labeling problems can cause SELinux denials. You could try to restore the default system file context for /var/log/httpd/error_log, restorecon -v '/var/log/httpd/error_log' If this does not work, there is currently no automatic way to allow this access. Instead, you can generate a local policy module to allow this access - see FAQ (http://fedora.redhat.com/docs/selinux-faq-fc5/#id2961385) Or you can disable SELinux protection altogether. Disabling SELinux protection is not recommended. Please file a bug report (http://bugzilla.redhat.com/bugzilla/enter_bug.cgi) against this package. Additional Information: Source Context root:system_r:postfix_postdrop_t Target Context system_u:object_r:httpd_log_t Target Objects /var/log/httpd/error_log [ file ] Source postdrop Source Path /usr/sbin/postdrop Port Host Source RPM Packages postfix-2.3.3-2.1.el5_2 Target RPM Packages Policy RPM selinux-policy-2.4.6-279.el5_5.1 Selinux Enabled True Policy Type targeted MLS Enabled True Enforcing Mode Enforcing Plugin Name catchall_file Host Name server109-228-26-144.live-servers.net Platform Linux server109-228-26-144.live-servers.net 2.6.18-194.8.1.el5 #1 SMP Thu Jul 1 19:04:48 EDT 2010 x86_64 x86_64 Alert Count 1 First Seen Wed Jun 13 11:43:55 2012 Last Seen Wed Jun 13 11:43:55 2012 but on CENTOS 6 I just get: Summary: SELinux is preventing postdrop (postfix_postdrop_t) "getattr" to /var/log/httpd/error_log (httpd_log_t). Detailed Description: SELinux denied access requested by postdrop. It is not expected that this access is required by postdrop and this access may signal an intrusion attempt. It is also possible that the specific version or configuration of the application is causing it to require additional access. Allowing Access: Sometimes labeling problems can cause SELinux denials. You could try to restore the default system file context for /var/log/httpd/error_log, restorecon -v '/var/log/httpd/error_log' If this does not work, there is currently no automatic way to allow this access. Instead, you can generate a local policy module to allow this access - see FAQ (http://fedora.redhat.com/docs/selinux-faq-fc5/#id2961385) Or you can disable SELinux protection altogether. Disabling SELinux protection is not recommended. Please file a bug report (http://bugzilla.redhat.com/bugzilla/enter_bug.cgi) against this package. Im running exactly the same command. Does anyone have any idea why Im not getting the "Additional information" that I do with CENTOS 5? Thanks in advance Dylan

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• Optimized .htaccess???

  - by StackOverflowNewbie

  I'd appreciate some feedback on the compression and caching configuration below. Trying to come up with a general purpose, optimized compression and caching configuration. If possible: Note your PageSpeed and YSlow grades Add configuration to your .htaccess Clear your cache Note your PageSpeed and YSlow grades to see if there are any improvements (or degradations) NOTE: Make sure you have appropriate modules loaded. Any feedback is much appreciated. Thanks. # JavaScript MIME type issues: # 1. Apache uses "application/javascript": http://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x/conf/mime.types # 2. IIS uses "application/x-javascript": http://technet.microsoft.com/en-us/library/bb742440.aspx # 3. SVG specification says it is text/ecmascript: http://www.w3.org/TR/2001/REC-SVG-20010904/script.html#ScriptElement # 4. HTML specification says it is text/javascript: http://www.w3.org/TR/1999/REC-html401-19991224/interact/scripts.html#h-18.2.2.2 # 5. "text/ecmascript" and "text/javascript" are considered obsolete: http://www.rfc-editor.org/rfc/rfc4329.txt #------------------------------------------------------------------------------- # Compression #------------------------------------------------------------------------------- <IfModule mod_deflate.c> AddOutputFilterByType DEFLATE application/xhtml+xml AddOutputFilterByType DEFLATE application/xml AddOutputFilterByType DEFLATE application/atom+xml AddOutputFilterByType DEFLATE text/css AddOutputFilterByType DEFLATE text/html AddOutputFilterByType DEFLATE text/plain AddOutputFilterByType DEFLATE text/xml # The following MIME types are in the process of registration AddOutputFilterByType DEFLATE application/xslt+xml AddOutputFilterByType DEFLATE image/svg+xml # The following MIME types are NOT registered AddOutputFilterByType DEFLATE application/mathml+xml AddOutputFilterByType DEFLATE application/rss+xml # Deal with JavaScript MIME type issues AddOutputFilterByType DEFLATE application/javascript AddOutputFilterByType DEFLATE application/x-javascript AddOutputFilterByType DEFLATE text/ecmascript AddOutputFilterByType DEFLATE text/javascript </IfModule> #------------------------------------------------------------------------------- # Expires header #------------------------------------------------------------------------------- <IfModule mod_expires.c> # 1. Set Expires to a minimum of 1 month, and preferably up to 1 year, in the future # (but not more than 1 year as that would violate the RFC guidelines) # 2. Use "Expires" over "Cache-Control: max-age" because it is more widely accepted ExpiresActive on ExpiresByType application/pdf "access plus 1 year" ExpiresByType application/x-shockwave-flash "access plus 1 year" ExpiresByType image/bmp "access plus 1 year" ExpiresByType image/gif "access plus 1 year" ExpiresByType image/jpeg "access plus 1 year" ExpiresByType image/png "access plus 1 year" ExpiresByType image/svg+xml "access plus 1 year" ExpiresByType image/tiff "access plus 1 year" ExpiresByType image/x-icon "access plus 1 year" ExpiresByType text/css "access plus 1 year" ExpiresByType video/x-flv "access plus 1 year" # Deal with JavaScript MIME type issues ExpiresByType application/javascript "access plus 1 year" ExpiresByType application/x-javascript "access plus 1 year" ExpiresByType text/ecmascript "access plus 1 year" ExpiresByType text/javascript "access plus 1 year" # Probably better to explicitly declare MIME types than to have a blanket rule for expiration # Uncomment below if you disagree #ExpiresDefault "access plus 1 year" </IfModule> #------------------------------------------------------------------------------- # Caching #------------------------------------------------------------------------------- <IfModule mod_headers.c> <FilesMatch "\.(bmp|css|flv|gif|ico|jpg|jpeg|js|pdf|png|svg|swf|tif|tiff)$"> Header add Cache-Control "public" Header unset ETag Header unset Last-Modified FileETag none </FilesMatch> </IfModule>

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• How do I create a Linked Server in SQL Server 2005 to a password protected Access 95 database?

  - by Brad Knowles

  I need to create a linked server with SQL Server Management Studio 2005 to an Access 95 database, which happens to be password protected at the database level. User level security has not been implemented. I cannot convert the Access database to a newer version. It is being used by a 3rd party application; so modifying it, in any way, is not allowed. I've tried using the Jet 4.0 OLE DB Provider and the ODBC OLE DB Provider. The 3rd party application creates a System DSN (with the proper database password), but I've not had any luck in using either method. If I were using a standard connection string, I think it would look something like this: Provider=Microsoft.Jet.OLEDB.4.0;Data Source='C:\Test.mdb';Jet OLEDB:Database Password=####; I'm fairly certain I need to somehow incorporate Jet OLEDB:Database Password into the linked server setup, but haven't figured out how. I've posted the scripts I'm using along with the associated error messages below. Any help is greatly appreciated. I'll provide more details if needed, just ask. Thanks! Method #1 - Using the Jet 4.0 Provider When I try to run these statements to create the linked server: sp_dropserver 'Test', 'droplogins'; EXEC sp_addlinkedserver @server = N'Test', @provider = N'Microsoft.Jet.OLEDB.4.0', @srvproduct = N'Access DB', @datasrc = N'C:\Test.mdb' GO EXEC sp_addlinkedsrvlogin @rmtsrvname=N'Test', @useself=N'False',@locallogin=NULL, @rmtuser=N'Admin', @rmtpassword='####' GO I get this error when testing the connection: TITLE: Microsoft SQL Server Management Studio ------------------------------ "The test connection to the linked server failed." ------------------------------ ADDITIONAL INFORMATION: An exception occurred while executing a Transact-SQL statement or batch. (Microsoft.SqlServer.ConnectionInfo) ------------------------------ The OLE DB provider "Microsoft.Jet.OLEDB.4.0" for linked server "Test" reported an error. Authentication failed. Cannot initialize the data source object of OLE DB provider "Microsoft.Jet.OLEDB.4.0" for linked server "Test". OLE DB provider "Microsoft.Jet.OLEDB.4.0" for linked server "Test" returned message "Cannot start your application. The workgroup information file is missing or opened exclusively by another user.". (Microsoft SQL Server, Error: 7399) ------------------------------ Method #2 - Using the ODBC Provider... sp_dropserver 'Test', 'droplogins'; EXEC sp_addlinkedserver @server = N'Test', @provider = N'MSDASQL', @srvproduct = N'ODBC', @datasrc = N'Test:DSN' GO EXEC sp_addlinkedsrvlogin @rmtsrvname=N'Test', @useself=N'False',@locallogin=NULL, @rmtuser=N'Admin', @rmtpassword='####' GO I get this error: TITLE: Microsoft SQL Server Management Studio ------------------------------ "The test connection to the linked server failed." ------------------------------ ADDITIONAL INFORMATION: An exception occurred while executing a Transact-SQL statement or batch. (Microsoft.SqlServer.ConnectionInfo) ------------------------------ Cannot initialize the data source object of OLE DB provider "MSDASQL" for linked server "Test". OLE DB provider "MSDASQL" for linked server "Test" returned message "[Microsoft][ODBC Driver Manager] Driver's SQLSetConnectAttr failed". OLE DB provider "MSDASQL" for linked server "Test" returned message "[Microsoft][ODBC Driver Manager] Driver's SQLSetConnectAttr failed". OLE DB provider "MSDASQL" for linked server "Test" returned message "[Microsoft][ODBC Microsoft Access Driver] Cannot open database '(unknown)'. It may not be a database that your application recognizes, or the file may be corrupt.". (Microsoft SQL Server, Error: 7303)

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• Oracle Internet Directory 11gR1 11.1.1.6 Certified with E-Business Suite

  - by Elke Phelps (Oracle Development)

  Oracle E-Business Suite comes with native user authentication and management capabilities out-of-the-box. If you need more-advanced features, it's also possible to integrate it with Oracle Internet Directory and Oracle Single Sign-On or Oracle Access Manager, which allows you to link the E-Business Suite with third-party tools like Microsoft Active Directory, Windows Kerberos, and CA Netegrity SiteMinder.  For details about third-party integration architectures, see either of these article for EBS 11i and 12: In-Depth: Using Third-Party Identity Managers with E-Business Suite Release 12 In-Depth: Using Third-Party Identity Managers with the E-Business Suite Release 11i Oracle Internet Directory 11.1.1.6 is now certified with Oracle E-Business Suite Release 11i, 12.0 and 12.1.  OID 11.1.1.6 is part of Oracle Fusion Middleware 11g Release 1 Version 11.1.1.6.0, also known as FMW 11g Patchset 5.  Certified E-Business Suite releases are: EBS Release 11i 11.5.10.2 + ATG PH.H RUP 7 and higher EBS Release 12.0.6 and higher EBS Release 12.1.1 and higher Supported Configurations Oracle Internet Directory 11.1.1.5.0 can be integrated with two single sign-on solutions for EBS environments: Oracle Internet Directory and Directory Integration Platform from Fusion Middleware 11gR1 Patchset 5 (11.1.1.6.0) with Oracle Access Manager 10g (10.1.4.3) with an existing Oracle E-Business Suite system (Release 11i or 12.1.x). Oracle Internet Directory and Directory Integration Platform from Fusion Middleware 11gR1 Patchset 5 (11.1.1.6.0) with Oracle Access Manager 11gR1 (11.1.1.5) with an existing Oracle E-Business Suite system (Release 12.0.6 or higher or 12.1.x). Oracle Internet Directory (OID) and Directory Integration Platform (DIP) from Oracle Fusion Middleware 11gR1 Patchset 5  (11.1.1.6.0) with Oracle Single Sign-On Server and Oracle Delegated Administration Services Release 10g (10.1.4.3.0) with an existing Oracle E-Business Suite system (Release 11i, 12.0.6 or 12.1.x) Oracle Access Manager strongly recommended Oracle has two single sign-on solutions: Oracle Single Sign-On Server (OSSO) and Oracle Access Manager (OAM). Oracle strongly recommends that all new single sign-on implementations use Oracle Access Manager. Oracle Access Manager is the preferred solution going forward, and forms the basis of Oracle Fusion Middleware 11g. OSSO is no longer being actively developed and will not be ported to Oracle WebLogic Server. Platform certifications Oracle Internet Directory is certified to run on any operating system for which Oracle WebLogic Server 11g is certified. Refer to the Oracle Fusion Middleware 11g System Requirements for more details.For information on operating systems supported by Oracle Internet Directory and its components, refer to the Oracle Identity and Access Management 11gR1 certification matrix.Integration with Oracle Internet Directory involves components spanning several different suites of Oracle products. There are no restrictions on which platform any particular component may be installed so long as the platform is supported for that component.References Overview of Single Sign-On Integration Options for Oracle E-Business Suite Note 1388152.1 Using the Latest Oracle Internet Directory 11gR1 Patchset with Oracle Single Sign-on and Oracle E-Business Suite (Note 876539.1) Integrating Oracle E-Business Suite with Oracle Access Manager 11g using Oracle E-Business Suite AccessGate (Note 1309013.1) Integrating Oracle E-Business Suite with Oracle Access Manager 10g using Oracle E-Business Suite AccessGate (Note 975182.1) Migrating Oracle Single Sign-On 10gR3 to Oracle Access Manager 11g with Oracle E-Business Suite (Note 1304550.1) Oracle Fusion Middleware Download, Installation & Configuration Readme Oracle Fusion Middleware Installation Guide for Oracle Identity Management 11g Release 1 (11.1.1) (Part Number E12002-09) Oracle Fusion Middleware Upgrade Guide for Oracle Identity Management 11g Release 1 (11.1.1) (Part Number E10129-09) Oracle Fusion Middleware Upgrade Planning Guide 11g Release 1 (11.1.1) (Part Number E10125-06) Oracle Fusion Middleware Patching Guide 11g Release 1 (11.1.1) (Part Number E16793-12) Related Articles Understanding Options for Integrating Oracle Access Manager with E-Business Suite In-Depth: Using Third-Party Identity Managers with E-Business Suite Release 12 In-Depth: Using Third-Party Identity Managers with the E-Business Suite Release 11i Oracle Access Manager 10gR3 Certified with E-Business Suite Portal 11.1.1.4 Certified with E-Business Suite Discoverer 11.1.1.4 Certified with E-Business Suite

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• Parsing String to Time and insert in mysqldatabase

  - by kawtousse

  Goal: Parse a string from an input type text into TIME type to be inserted in MYSQL Database. String start= request.getParameter("startp"); System.out.println("start:" +start); SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss"); long ms=0; try { ms = sdf.parse(start).getTime(); System.out.println(" the value of ms is:" +ms); } catch (ParseException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } Time ts = new Time(ms); System.out.println("the value of ts is:" +ts); start:14:12 (value witch i entered actually in the form at the start field named startp) the value of ts is :01:00:00 java.text.ParseException: Unparseable date: "14:12" at java.text.DateFormat.parse(Unknown Source) ms not displayed I ensure that database type of the following parameter is TIME. Thanks.

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• C# Image.Clone to byte[] causes EDIT.COM to open on Windows XP

  - by JayDial

  It appears that cloning a Image and converting it to a byte array is causing EDIT.COM to open up on Windows XP machines. This does not happen on a Windows 7 machine. The application is a C# .NET 2.0 application. Does anyone have any idea why this may be happening? Here is my Image conversion code: public static byte[] CovertImageToByteArray(Image imageToConvert) { imageToConvert.Clone() as Image; if(clone == null) return null; imageToConvert.Dispose(); byte[] imageByteArray; using (MemoryStream ms = new MemoryStream()) { clone.Save(ms, clone.RawFormat); imageByteArray = ms.ToArray(); } return imageByteArray; } public static Image ConvertByteArrayToImage(byte[] imageByteArray, ImageFormat formatOfImage) { Image image; using ( MemoryStream ms = new MemoryStream(imageByteArray, 0, imageByteArray.Length)) { ms.Write(imageByteArray, 0, imageByteArray.Length); image = Image.FromStream(ms, true); } return image; } Thanks Justin

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• SQlite/Firebird: Does any of them support multiple concurrent write access ?

  - by Quandary

  Question: I currently store ASP.net application data in XML files. Now the problem is I have asynchronous operations, which means I ran into the problem of simultanous write access on a XML file... Now, I'm considering moving to an embedded database to solve the issue. I'm currently considering SQlite and embeddable Firebird. I'm not sure however if SQlite or Firebird can handle multiple concurrent write access. And I certainly don't want the same problem again. Anybody knows ? SQlite certainly is better known, but which one is better - SQlite or Firebird ? I tend to say Firebird, but I don't really know. No MS-Access or MS-SQL-express recommodations please, I'm a sane person.

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• Local Variables take 7x longer to access than global variables?

  - by ItzWarty

  I was trying to benchmark the gain/loss of "caching" math.floor, in hopes that I could make calls faster. Here was the test: <html> <head> <script> window.onload = function() { var startTime = new Date().getTime(); var k = 0; for(var i = 0; i < 1000000; i++) k += Math.floor(9.99); var mathFloorTime = new Date().getTime() - startTime; startTime = new Date().getTime(); window.mfloor = Math.floor; k = 0; for(var i = 0; i < 1000000; i++) k += window.mfloor(9.99); var globalFloorTime = new Date().getTime() - startTime; startTime = new Date().getTime(); var mfloor = Math.floor; k = 0; for(var i = 0; i < 1000000; i++) k += mfloor(9.99); var localFloorTime = new Date().getTime() - startTime; document.getElementById("MathResult").innerHTML = mathFloorTime; document.getElementById("globalResult").innerHTML = globalFloorTime; document.getElementById("localResult").innerHTML = localFloorTime; }; </script> </head> <body> Math.floor: <span id="MathResult"></span>ms <br /> var mathfloor: <span id="globalResult"></span>ms <br /> window.mathfloor: <span id="localResult"></span>ms <br /> </body> </html> My results from the test: [Chromium 5.0.308.0]: Math.floor: 49ms var mathfloor: 271ms window.mathfloor: 40ms [IE 8.0.6001.18702] Math.floor: 703ms var mathfloor: 9890ms [LOL!] window.mathfloor: 375ms [Firefox [Minefield] 3.7a4pre] Math.floor: 42ms var mathfloor: 2257ms window.mathfloor: 60ms [Safari 4.0.4[531.21.10] ] Math.floor: 92ms var mathfloor: 289ms window.mathfloor: 90ms [Opera 10.10 build 1893] Math.floor: 500ms var mathfloor: 843ms window.mathfloor: 360ms [Konqueror 4.3.90 [KDE 4.3.90 [KDE 4.4 RC1]]] Math.floor: 453ms var mathfloor: 563ms window.mathfloor: 312ms The variance is random, of course, but for the most part In all cases [this shows time taken]: [takes longer] mathfloor Math.floor window.mathfloor [is faster] Why is this? In my projects i've been using var mfloor = Math.floor, and according to my not-so-amazing benchmarks, my efforts to "optimize" actually slowed down the script by ALOT... Is there any other way to make my code more "efficient"...? I'm at the stage where i basically need to optimize, so no, this isn't "premature optimization"...

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• Why is writeSTRef faster than if expression?

  - by wenlong

  writeSTRef twice for each iteration fib3 :: Int -> Integer fib3 n = runST $ do a <- newSTRef 1 b <- newSTRef 1 replicateM_ (n-1) $ do !a' <- readSTRef a !b' <- readSTRef b writeSTRef a b' writeSTRef b $! a'+b' readSTRef b writeSTRef once for each iteration fib4 :: Int -> Integer fib4 n = runST $ do a <- newSTRef 1 b <- newSTRef 1 replicateM_ (n-1) $ do !a' <- readSTRef a !b' <- readSTRef b if a' > b' then writeSTRef b $! a'+b' else writeSTRef a $! a'+b' a'' <- readSTRef a b'' <- readSTRef b if a'' > b'' then return a'' else return b'' Benchmark, given n = 20000: benchmarking 20000/fib3 mean: 5.073608 ms, lb 5.071842 ms, ub 5.075466 ms, ci 0.950 std dev: 9.284321 us, lb 8.119454 us, ub 10.78107 us, ci 0.950 benchmarking 20000/fib4 mean: 5.384010 ms, lb 5.381876 ms, ub 5.386099 ms, ci 0.950 std dev: 10.85245 us, lb 9.510215 us, ub 12.65554 us, ci 0.950 fib3 is a bit faster than fib4.

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• Welcome to ubiquitous file sharing (December 08, 2009)

  - by user12612012

  The core of any file server is its file system and ZFS provides the foundation on which we have built our ubiquitous file sharing and single access control model.  ZFS has a rich, Windows and NFSv4 compatible, ACL implementation (ZFS only uses ACLs), it understands both UNIX IDs and Windows SIDs and it is integrated with the identity mapping service; it knows when a UNIX/NIS user and a Windows user are equivalent, and similarly for groups.  We have a single access control architecture, regardless of whether you are accessing the system via NFS or SMB/CIFS.The NFS and SMB protocol services are also integrated with the identity mapping service and shares are not restricted to UNIX permissions or Windows permissions.  All access control is performed by ZFS, the system can always share file systems simultaneously over both protocols and our model is native access to any share from either protocol.Modal architectures have unnecessary restrictions, confusing rules, administrative overhead and weird deployments to try to make them work; they exist as a compromise not because they offer a benefit.  Having some shares that only support UNIX permissions, others that only support ACLs and some that support both in a quirky way really doesn't seem like the sort of thing you'd want in a multi-protocol file server.  Perhaps because the server has been built on a file system that was designed for UNIX permissions, possibly with ACL support bolted on as an add-on afterthought, or because the protocol services are not truly integrated with the operating system, it may not be capable of supporting a single integrated model.With a single, integrated sharing and access control model: If you connect from Windows or another SMB/CIFS client: The system creates a credential containing both your Windows identity and your UNIX/NIS identity.  The credential includes UNIX/NIS IDs and SIDs, and UNIX/NIS groups and Windows groups. If your Windows identity is mapped to an ephemeral ID, files created by you will be owned by your Windows identity (ZFS understands both UNIX IDs and Windows SIDs). If your Windows identity is mapped to a real UNIX/NIS UID, files created by you will be owned by your UNIX/NIS identity. If you access a file that you previously created from UNIX, the system will map your UNIX identity to your Windows identity and recognize that you are the owner.  Identity mapping also supports access checking if you are being assessed for access via the ACL. If you connect via NFS (typically from a UNIX client): The system creates a credential containing your UNIX/NIS identity (including groups). Files you create will be owned by your UNIX/NIS identity. If you access a file that you previously created from Windows and the file is owned by your UID, no mapping is required. Otherwise the system will map your Windows identity to your UNIX/NIS identity and recognize that you are the owner.  Again, mapping is fully supported during ACL processing. The NFS, SMB/CIFS and ZFS services all work cooperatively to ensure that your UNIX identity and your Windows identity are equivalent when you access the system.  This, along with the single ACL-based access control implementation, results in a system that provides that elusive ubiquitous file sharing experience.

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• MS Chart with ASP.NET chart type "column" not showing axis x label if there are more than 9 bar in t

  - by Bayonian

  Hi, I'm having problem with MS Chart chart type column. If there are only 9 bar in the chart like the following picture, then the axis-x label show up properly. However, there are more than 9 bars bar the chart, the axis-x label wont show up properly, some of them just dissappear. Here's my mark-up for the chart: <asp:Chart ID="chtNBAChampionships" runat="server"> <Series> <asp:Series Name="Championships" YValueType="Int32" Palette="Berry" ChartType="Column" ChartArea="MainChartArea" IsValueShownAsLabel="true"> <Points> <asp:DataPoint AxisLabel="Celtics" YValues="17" /> <asp:DataPoint AxisLabel="Lakers" YValues="15" /> <asp:DataPoint AxisLabel="Bulls" YValues="6" /> <asp:DataPoint AxisLabel="Spurs" YValues="4" /> <asp:DataPoint AxisLabel="76ers" YValues="3" /> <asp:DataPoint AxisLabel="Pistons" YValues="3" /> <asp:DataPoint AxisLabel="Warriors" YValues="3" /> <asp:DataPoint AxisLabel="Mara" YValues="4" /> <asp:DataPoint AxisLabel="Saza" YValues="9" /> <asp:DataPoint AxisLabel="Buha" YValues="6" /> </Points> </asp:Series> </Series> <ChartAreas> <asp:ChartArea Name="MainChartArea"> </asp:ChartArea> </ChartAreas> </asp:Chart> I don't know it works with only 9 bars? Is there any way to make the chart work properly? Also, if possible, how to make each bar have different color. Thank you.

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• What MS technology to use for HTTP service returning XML?

  - by Borek

  I need to create a service that: accepts HTTP requests (with query string or HTTP POST parameters) does some processing on the requests (checking if the request is valid, authentication etc.) reads data from a custom store (another HTTP call in our case) returns the result as custom XML (defined with XSD) I'm trying to think of various MS technologies that could help me and how good they would be for this scenario (pretty standard one I guess). The tasks above are relatively separate, this is what comes to mind: HTTP front-end: ASP.NET Web Forms ASP.NET MVC (seems more appropriate here as I won't need server controls, view state etc.) WCF? Don't know much about it or how well it would suit my task. Custom logic on the server: this will probably be a generic C# code in all cases (sometimes "plugged into" or called from MVC controllers or some equivalent place in other technologies) Reading data from internal data stores: As said, this is another HTTP server in our case. Options that come to mind: Just read the data using something like WebClient (Just theoretically) implement a LINQ provider (Just even more theoretically) implement an EF provider Output the data as custom XML: Linq2XML Serialization? Is it flexible enough? Does WCF provide some tools for this? Some "OXM" - Object/XML mapper if there is something like that for .NET I may be wrong in many of my assumptions, this is just a quick list that comes to mind after a quick research. Some general notes / questions: Testing is important Solution with a clear domain model would be much preferred over the one without Can Entity Framework actually help somewhere in my scenario? If so, where and how? Would WCF be an appropriate technology for this? I don't know much about it.

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• What problem did MS solve by creating PowerShell? [closed]

  - by Fred

  I'm asking because PowerShell confuses me. I've been trying to write some deployment scripts using PowerShell and I've been less than enthused by the result. I have a co-worker who loves PowerShell and defends it at every turn. Said co-worker claims PowerShell was never written to be a strong shell, but instead was written to: a) Allow you to peek and poke at .NET assemblies on the command-line (why is this a reason for PowerShell to exist?) b) To be hosted in .NET applications for automation, similar to DCOP in KDE and how Gnome is using CORBA. c) to be treated as ".NET script" rather than as an actual shell (related to b). I've always felt like Windows was missing a decent way to bang out automation scripts. cmd is too simplistic in many cases, and WSH is too obtuse (although the combination can be used successfully, I'm not a fan). When I first heard about PowerShell I felt like Windows was finally getting a decent shell that would be able to help with automation of many tasks, but recent experiences, and my co-worker, tell me otherwise. To be clear, I don't take issue with the fact that it's built on .NET, or that it passes objects around rather than text (despite my Unix background :]), and I'm not arguing that PowerShell is useless, but from what I can see, it doesn't solve the problem I was hoping it would solve very well. As soon as you step outside of the .NET/Powershell world, things quit being nice and cozy for you. So with all that out of the way, what problem did MS solve by creating PowerShell, or is it some political bastard child as I suspect? I've googled and haven't hit upon anything that sufficiently answered that for me, but the more citations the better.

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• How to write to a Text File in Pipe delimited format from MS Sql Server / ASP.Net?

  - by NJTechGuy

  I have a text file which needs to be constantly updated (regular intervals). All I want is the syntax and possibly some code that outputs data from a MS Sql Database using ASP.Net. The code I have so far is : <%@ Import Namespace="System.IO" %> <script language="vb" runat="server"> sub Page_Load(sender as Object, e as EventArgs) Dim FILENAME as String = Server.MapPath("Output.txt") Dim objStreamWriter as StreamWriter ' If Len(Dir$(FILENAME)) > 0 Then Kill(FILENAME) objStreamWriter = File.AppendText(FILENAME) objStreamWriter.WriteLine("A user viewed this demo at: " & DateTime.Now.ToString()) objStreamWriter.Close() Dim objStreamReader as StreamReader objStreamReader = File.OpenText(FILENAME) Dim contents as String = objStreamReader.ReadToEnd() lblNicerOutput.Text = contents.Replace(vbCrLf, "<br>") objStreamReader.Close() end sub </script> <asp:label runat="server" id="lblNicerOutput" Font-Name="Verdana" /> With PHP, it is a breeze, but with .Net I have no clue. If you could help me with the database connectivity and how to write the data in pipe delimited format to an Output.txt file, that had be awesome. Thanks guys!

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• MS Exam 70-536 - How to throw and handle exception from thread?

  - by Max Gontar

  Hello! In MS Exam 70-536 .Net Foundation, Chapter 7 "Threading" in Lesson 1 Creating Threads there is a text: Be aware that because the WorkWithParameter method takes an object, Thread.Start could be called with any object instead of the string it expects. Being careful in choosing your starting method for a thread to deal with unknown types is crucial to good threading code. Instead of blindly casting the method parameter into our string, it is a better practice to test the type of the object, as shown in the following example: ' VB Dim info As String = o as String If info Is Nothing Then Throw InvalidProgramException("Parameter for thread must be a string") End If // C# string info = o as string; if (info == null) { throw InvalidProgramException("Parameter for thread must be a string"); } So, I've tried this but exception is not handled properly (no console exception entry, program is terminated), what is wrong with my code (below)? class Program { static void Main(string[] args) { Thread thread = new Thread(SomeWork); try { thread.Start(null); thread.Join(); } catch (InvalidProgramException ex) { Console.WriteLine(ex.Message); } finally { Console.ReadKey(); } } private static void SomeWork(Object o) { String value = (String)o; if (value == null) { throw new InvalidProgramException("Parameter for "+ "thread must be a string"); } } } Thanks for your time!

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• In C/C++,how to link dynamic link lib which compiled in GCC/G++ in MS VStudio?

  - by coanor

  These days, I use Flex & Bison generated some codes to develop a SQL-parser alike tools, these code can't compiled silently(may be this another topic) in VS2005,but GCC/G++ works well, then I compiled these code with mingw in dll(in windows xp), and then linked these function facades in VS2005, but it seems can't link the dll during linking. Does MS VS2005 recognize the dll which compiled using mingw on windows? Is there anything I need to do additional? For example, adding something in the include-file that declare the exported APIs? Does any one can give some advices? The condition is, as in VS2005, if you want to export some APIs, you may show a *.def file to tell nmake which API you want to export, and then you may create a(or some) *.h file to declare somthing about these APIs(adding some stdcall alike prefix as a call protocal) and some data-type definition. But with GCC/G++, you do not need to do such boring things, just use [ar], you can get these APIs, so my *.h file do not add call protocol and no *.def, just like common function declaration. After *.dll generated, add the *.h file and [mv] generated *.dll in VS2005 project directory, then set the linking *.dll in project setting. Does these steps generated my Question? BTW, I found and tested VC6-compiled dll can be linked with mingw in Windows XP, but the reverse can't work. Anyway, forgive my poor English, and thanks for your concern.

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• XP, how to apply security to files, now have simple file sharing and can't access some files from other machines ?

  - by Jules

  For a month or two now I've been using simple file sharing, for several months before that I didn't, then before that I had simple file sharing tuned on. So at the moment I don't have a security tab (on files or folders) or sharing permissions settings there too. As an example, from another machine, I can access files from 2007 but not from the summer of last year in the same folder. I can access all files on that local machine. So I think I just need to re-apply security or permissions somehow? What should I do?

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• Trying to configure domain-based access via htaccess file.

  - by kenja

  I've created an account with no-ip.com that registers my ip with a subdomain of their service. When I do an nslookup, I see that the service is working and that my domain is being shown. Now I want to provide access to that subdomain on the admin site of our server which is protected by htaccess IP restrictions. When I try to add the new domain to my script it does not work. Am I doing something wrong? I'm basically trying to make my laptop so it can log in from no matter when I'm at while still preventing all other IPs from accessing the site. ## password begin ## AuthName "Restricted Access" AuthUserFile /usr/www/users/site/.passwd AuthType Basic Require valid-user Order deny,allow Deny from all Allow from 69.1.122.161 mysubdomain.no-ip.org Satisfy All

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• How can I provide secure web content to mobile devices that can't access an intranet?

  - by evanmcd

  I'm working with a client on development web content for their intranet. We want users to be able to access a version of the content on their mobile devices, but most of them don't have the VPN capability to get on to their intranet. I'm wondering if anyone has had experience with this and can recommend a solution. One other thing to consider is that the content is not mission critically secure. If someone outside the company gained access to it, it would not represent a major issue, only a minor annoyance. Thanks for any advice.

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• How do I fill in data using index, match, etc. in MS Excel?

  - by MorningHacker

  I have data formatted like so. 1, 2, 3, 4, null, null, null A, B, C, D, null, null, null 1, null, null, 4, 5, 6, 7 A, null, null, D, 8, 9, 10 I want to copy the data from row three into the missing "null" cells in row one, because there is a match on cell values one and four upon comparing row one and row three. So far I have the following. =INDEX(A2:AE346, MATCH(A351&F351&G351, A2:A346&F2:F346&G2:G346, 0), 2) Here is a spreadsheet with some sample data so you can test your formulas.

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• How can I enable anonymous access to a Samba share under ADS security mode?

  - by hemp

  I'm trying to enable anonymous access to a single service in my Samba config. Authorized user access is working perfectly, but when I attempt a no-password connection, I get this message: Anonymous login successful Domain=[...] OS=[Unix] Server=[Samba 3.3.8-0.51.el5] tree connect failed: NT_STATUS_LOGON_FAILURE The message log shows this error: ... smbd[21262]: [2010/05/24 21:26:39, 0] smbd/service.c:make_connection_snum(1004) ... smbd[21262]: Can't become connected user! The smb.conf is configured thusly: [global] security = ads obey pam restrictions = Yes winbind enum users = Yes winbind enum groups = Yes winbind use default domain = true valid users = "@domain admins", "@domain users" guest account = nobody map to guest = Bad User [evilshare] path = /evil/share guest ok = yes read only = No browseable = No Given that I have 'map to guest = Bad User' and 'guest ok' specified, I don't understand why it is trying to "become connected user". Should it not be trying to "become guest user"?

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