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• Mercurial push error - hook failed

  - by raychenon

  I committed some changesets. Now I want to push them to remote repository. I get this error during push pushing to http://hguser:***@z2xeu:1337/hg/cms searching for changes 1 changesets found remote: adding changesets remote: adding manifests remote: adding file changes remote: added 1 changesets with 2 changes to 2 files remote: Attempt to commit or push text file(s) using CRLF line endings remote: in 700e14d32918: src/main/webapp/WEB-INF/jsp/search.jsp remote: remote: To prevent this mistake in your local repository, remote: add to Mercurial.ini or .hg/hgrc: remote: remote: [hooks] remote: pretxncommit.crlf = python:hgext.win32text.forbidcrlf remote: remote: and also consider adding: remote: remote: [extensions] remote: hgext.win32text = remote: [encode] remote: ** = cleverencode: remote: [decode] remote: ** = cleverdecode: remote: transaction abort! remote: rollback completed remote: abort: pretxnchangegroup.crlf hook failed [command returned code 1 Wed Jan 12 11:14:55 2011] To prevent this, I wrote in the .hg/hgrc file ( there is no Mercurial.ini ) [hooks] pretxncommit.crlf = python:hgext.win32text.forbidcrlf pretxnchangegroup.crlf = python:hgext.win32text.forbidcrlf [extensions] hgext.win32text = But I still get the same error as above. I'm pretty sure pretxnchangegroup.crlf is involved in this, maybe a python file ? I use only unicode characters in files committed

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• SQL Server 2005, Sudden increase of connections - SharePoint 2007

  - by CrazyNick

  We observed that sudden increase of SQL connections during a specific hour, it is a backend of a SharePoint 2007 Farm. From SharePoint 2007 Perspective: 1. Incremental crawling is scheduled at that time and few of the Timer jobs (normal timer jobs) are scheduled to run every mins / per 10mins. 2. Number of user requests are less. From SQL Server 2005 Perspective: 1. Transaction log backup is scheduled at that time 2. No other scheduled jobs are running at that time. so, how to narrow down the issue, what would be causing the sudden SQL connection increase?

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• Modifying ChangeSet in RIA Services

  - by Mohit

  Hi, I am using RIA Services Beta 2 with Linq2Sql and SL3. In my SL3, I have a datagrid where I can do some mappings of data (Updates, Inserts and Deletes). I override the Submit method when SubmitChanges() is called. In the submit method in the domain service, I do some validation. If a validation fails for a particular ChangeSetEntry in the ChangeSet, a ValidationErrors is added. Then I call the base.Submit(changeSet). So, if the changeset has 3 entities and one of the entities results in validation error, the other 2 entities are also rolled back. It looks like, RIA Services does an implicit transaction and hence it either submits all 3 or none even if 2 out of 3 does not have any validation error. Is there a way for the RIA service, to prevent rollback of the valid entities and only invalidate the ones that has validation failed. Inputs will be appreciated. Thanks Mohit

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• Using separate model methods to manage transactions

  - by DCrystal

  If i’ve got 2(or more) model methods which do (for example, in billing system) enrolling/withdrawing, and one controller’s method that calls 2(or more) of these model methods. Is it a good way(maybe, any suggestions how to do it better) to write/use 2model methods like these: public function start_transaction(){ $this->db->trans_start(); } public function end_transaction(){ $this->db->trans_complete(); } And call in controller’s method: public function smth(){ //something $this->model->start_transaction(); $this->model->enroll(); //something else $this->model->withdraw(); $this->model->end_transaction(); } Will transaction be reversed, if model's withdraw() method fails? Thanks.

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• Convert SQLITE SQL dump file to POSTGRESQL

  - by DevX

  I've been doing development using SQLITE database with production in POSTGRESQL. I just updated my local database with a huge amount of data and need to transfer a specific table to the production database. SQLITE outputs a table dump in the following format: BEGIN TRANSACTION; CREATE TABLE "courses_school" ("id" integer PRIMARY KEY, "department_count" integer NOT NULL DEFAULT 0, "the_id" integer UNIQUE, "school_name" varchar(150), "slug" varchar(50)); INSERT INTO "courses_school" VALUES(1,168,213,'TEST Name A',NULL); INSERT INTO "courses_school" VALUES(2,0,656,'TEST Name B',NULL); .... COMMIT; How do I convert the above into a POSTGRESQL compatible dump file that I can import into my production server?

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• Membership.GetUser() within TransactionScope throws TransactionAbortedException

  - by Bob Kaufman

  The following code throws a TransactionAbortedException with message "The transaction has aborted": using ( MyDataContext context = new MyDataContext() ) { using ( TransactionScope transactionScope = new TransactionScope() ) { Guid accountID = new Guid( Request.QueryString[ "aid" ] ); Account account = ( from a in context.Accounts where a.UniqueID.Equals( accountID ) select a ).SingleOrDefault(); IQueryable < My_Data_Access_Layer.Login > loginList = from l in context.Logins where l.AccountID == account.AccountID select l; foreach ( My_Data_Access_Layer.Login login in loginList ) { MembershipUser membershipUser = Membership.GetUser( login.UniqueID ); } } } The error occurs at the call to Membership.GetUser(). My Connection String is: <add name="MyConnectionString" connectionString="Data Source=localhost\SQLEXPRESS;Initial Catalog=MyDatabase;Integrated Security=True" providerName="System.Data.SqlClient" /> Everything I've read tells me that TransactionScope should just get magically applied to the Membership calls. The user exists (I'd expect a null return otherwise.)

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• TransactionScope and Connection Pooling

  - by Graham

  Hi, I'm trying to get a handle on whether we have a problem in our application with database connections using incorrect IsolationLevels. Our application is a .Net 3.5 database app using SQL Server 2005. I've discovered that the IsolationLevel of connections are not reset when they are returned to the connection pool (see here) and was also really surprised to read in this blog post that each new TransactionScope created gets its own connection pool assigned to it. Our database updates (via our business objects) take place within a TransactionScope (a new one is created for each business object graph update). But our fetches do not use an explicit transaction. So what I'm wondering is could we ever get into the situation where our fetch operations (which should be using the default IsolationLevel - Read Committed) would reuse a connection from the pool which has been used for an update, and inherit the update IsolationLevel (RepeatableRead)? Or would our updates be guaranteed to use a different connection pool seeing as they are wrapped in a TransactionScope? Thanks in advance, Graham

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• Do MSDTC and disaster recovery go together?

  - by DevDelivery

  Our application writes to multiple Sql Server databases within a distributed transaction. The Ops guys are saying that this messes up their disaster recovery plan because while the transactions on the live tables may commit at the same time, the log shipping on the separate databases happen at slightly different times. So in in a disaster recovery situation, there will be a few partial transactions. Is there a method for maintaining separate but synced databases in DR? Or do we have to re-design to relatively independent databases (or a single database)?

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• MySql timeouts - Should I set autoReconnect=true in Spring application?

  - by George

  After periods of inactivity on my website (Using Spring 2.5 and MySql), I get the following error: org.springframework.dao.RecoverableDataAccessException: The last packet sent successfully to the server was 52,847,830 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem. According to this question, and the linked bug, I shouldn't just set autoReconnect=true. Does this mean I have to catch this exception on any queries I do and then retry the transaction? Should that logic be in the data access layer, or the model layer? Is there an easy way to handle this instead of wrapping every single query to catch this?

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• update table using cursor but also update records in another table

  - by Bucket

  I'm updating the IDs with new IDs, but I need to retain the same ID for the master record in table A and its dependents in table B. The chunk bracketed by comments is the part I can't figure out. I need to update all the records in table B that share the same ID with the current record I'm looking at for table A. DECLARE CURSOR_A CURSOR FOR SELECT * FROM TABLE_A FOR UPDATE OPEN CURSOR_A FETCH NEXT FROM CURSOR_A WHILE @@FETCH_STATUS = 0 BEGIN BEGIN TRANSACTION UPDATE KEYMASTERTABLE SET RUNNING_NUMBER=RUNNING_NUMBER+1 WHERE TRANSACTION_TYPE='TABLE_A_NEXT_ID' -- FOLLOWING CHUNK IS WRONG!!! UPDATE TABLE_B SET TABLE_B_ID=(SELECT RUNNING_NUMBER FROM KEYMASTERTABLE WHERE TRANSACTION_TYPE='TABLE_A_NEXT_ID') WHERE TABLE_B_ID = (SELECT TABLE_A_ID FROM CURRENT OF CURSOR A) -- END OF BAD CHUNK UPDATE TABLE_A SET TABLE_A_ID=(SELECT RUNNING_NUMBER FROM KEYMASTERTABLE WHERE TRANSACTION_TYPE='TABLE_A_NEXT_ID') WHERE CURRENT OF CURSOR_A COMMIT FETCH NEXT FROM CURSOR_A END CLOSE CURSOR_A DEALLOCATE CURSOR_A GO

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• How to manage memory using classes in Objective-C?

  - by Flipper

  This is my first time creating an iPhone App and I am having difficulty with the memory management because I have never had to deal with it before. I have a UITableViewController and it all works fine until I try to scroll down in the simulator. It crashes saying that it cannot allocate that much memory. I have narrowed it down to where the crash is occurring: - (UITableViewCell *)tableView:(UITableView *)aTableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { // Dequeue or create a cell UITableViewCellStyle style = UITableViewCellStyleDefault; UITableViewCell *cell = [aTableView dequeueReusableCellWithIdentifier:@"BaseCell"]; if (!cell) cell = [[[UITableViewCell alloc] initWithStyle:style reuseIdentifier:@"BaseCell"] autorelease]; NSString* crayon; // Retrieve the crayon and its color if (aTableView == self.tableView) { crayon = [[[self.sectionArray objectAtIndex:indexPath.section] objectAtIndex:indexPath.row] getName]; } else { crayon = [FILTEREDKEYS objectAtIndex:indexPath.row]; } cell.textLabel.text = crayon; if (![crayon hasPrefix:@"White"]) cell.textLabel.textColor = [self.crayonColors objectForKey:crayon]; else cell.textLabel.textColor = [UIColor blackColor]; return cell; } Here is the getName method: - (NSString*)getName { return name; } name is defined as: @property (nonatomic, retain) NSString *name; Now sectionArray is an NSMutableArray with instances of a class that I created Term in it. Term has a method getName that returns a NSString*. The problem seems to be the part of where crayon is being set and getName is being called. I have tried adding autorelease, release, and other stuff like that but that just causes the entire app to crash before even launching. Also if I do: cell.textLabel.text = @"test"; //crayon; /*if (![crayon hasPrefix:@"White"]) cell.textLabel.textColor = [self.crayonColors objectForKey:crayon]; else cell.textLabel.textColor = [UIColor blackColor];*/ Then I get no error whatsoever and it all scrolls just fine. Thanks in advance for the help! Edit: Here is the full Log of when I try to run the app and the error it gives when it crashes: [Session started at 2010-12-29 04:23:38 -0500.] [Session started at 2010-12-29 04:23:44 -0500.] GNU gdb 6.3.50-20050815 (Apple version gdb-967) (Tue Jul 14 02:11:58 UTC 2009) Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i386-apple-darwin".sharedlibrary apply-load-rules all Attaching to process 1429. gdb-i386-apple-darwin(1430,0x778720) malloc: * mmap(size=1420296192) failed (error code=12) error: can't allocate region ** set a breakpoint in malloc_error_break to debug gdb stack crawl at point of internal error: [ 0 ] /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/libexec/gdb/gdb-i386-apple-darwin (align_down+0x0) [0x1222d8] [ 1 ] /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/libexec/gdb/gdb-i386-apple-darwin (xstrvprintf+0x0) [0x12336c] [ 2 ] /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/libexec/gdb/gdb-i386-apple-darwin (xmalloc+0x28) [0x12358f] [ 3 ] /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/libexec/gdb/gdb-i386-apple-darwin (dyld_info_read_raw_data+0x50) [0x1659af] [ 4 ] /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/libexec/gdb/gdb-i386-apple-darwin (dyld_info_read+0x1bc) [0x168a58] [ 5 ] /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/libexec/gdb/gdb-i386-apple-darwin (macosx_dyld_update+0xbf) [0x168c9c] [ 6 ] /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/libexec/gdb/gdb-i386-apple-darwin (macosx_solib_add+0x36b) [0x169fcc] [ 7 ] /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/libexec/gdb/gdb-i386-apple-darwin (macosx_child_attach+0x478) [0x17dd11] [ 8 ] /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/libexec/gdb/gdb-i386-apple-darwin (attach_command+0x5d) [0x64ec5] [ 9 ] /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/libexec/gdb/gdb-i386-apple-darwin (mi_cmd_target_attach+0x4c) [0x15dbd] [ 10 ] /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/libexec/gdb/gdb-i386-apple-darwin (captured_mi_execute_command+0x16d) [0x17427] [ 11 ] /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/libexec/gdb/gdb-i386-apple-darwin (catch_exception+0x41) [0x7a99a] [ 12 ] /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/libexec/gdb/gdb-i386-apple-darwin (mi_execute_command+0xa9) [0x16f63] /SourceCache/gdb/gdb-967/src/gdb/utils.c:1144: internal-error: virtual memory exhausted: can't allocate 1420296192 bytes. A problem internal to GDB has been detected, further debugging may prove unreliable. The Debugger has exited with status 1.The Debugger has exited with status 1. Here is the backtrace that I get when I set the breakpoint for malloc_error_break: #0 0x0097a68c in objc_msgSend () #1 0x01785bef in -[UILabel setText:] () #2 0x000030e0 in -[TableViewController tableView:cellForRowAtIndexPath:] (self=0x421d760, _cmd=0x29cfad8, aTableView=0x4819600, indexPath=0x42190f0) at /Volumes/Main2/Enayet/TableViewController.m:99 #3 0x016cee0c in -[UITableView(UITableViewInternal) _createPreparedCellForGlobalRow:withIndexPath:] () #4 0x016c6a43 in -[UITableView(UITableViewInternal) _createPreparedCellForGlobalRow:] () #5 0x016d954f in -[UITableView(_UITableViewPrivate) _updateVisibleCellsNow] () #6 0x016d08ff in -[UITableView layoutSubviews] () #7 0x03e672b0 in -[CALayer layoutSublayers] () #8 0x03e6706f in CALayerLayoutIfNeeded () #9 0x03e668c6 in CA::Context::commit_transaction () #10 0x03e6653a in CA::Transaction::commit () #11 0x03e6e838 in CA::Transaction::observer_callback () #12 0x00b00252 in __CFRunLoopDoObservers () #13 0x00aff65f in CFRunLoopRunSpecific () #14 0x00afec48 in CFRunLoopRunInMode () #15 0x00156615 in GSEventRunModal () #16 0x001566da in GSEventRun () #17 0x01689faf in UIApplicationMain () #18 0x00002398 in main (argc=1, argv=0xbfffefb0) at /Volumes/Main2/Enayet/main.m:14

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• Spring Security Issue: Controller, Anonymous Requests...

  - by Srirangan

  Hey guys, I have an app that uses Spring security and BlazeDS. Flex 3.2 is used for the client app. Generally client app makes service calls using RemoteObjects. However, for certain cases client app is sending a request to a URL. We're using Annotated Controllers for URL mapping. Here's where the "Access is denied" exception comes up: 2010-04-12 11:43:23,486 [qtp5138683-16] ERROR fr.plasticomnium.gpoc.utils.ServiceExceptionInterceptor - Unexpected RuntimeException : Access is denied org.springframework.security.access.AccessDeniedException: Access is denied at org.springframework.security.access.vote.AffirmativeBased.decide(AffirmativeBased.java:71) at org.springframework.security.access.intercept.AbstractSecurityInterceptor.beforeInvocation(AbstractSecurityInterceptor.java:203) at org.springframework.security.access.intercept.aopalliance.MethodSecurityInterceptor.invoke(MethodSecurityInterceptor.java:64) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) at fr.plasticomnium.gpoc.utils.ServiceExceptionInterceptor.invoke(ServiceExceptionInterceptor.java:15) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202) ... ...

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• Settings up a Mercurial server on IIS 6

  - by TheCodeJunkie

  Hi, I've set up a Mercurial server on a Windows 2003 / IIS 6 machine and when I try to pull the repository I get the following sequence requesting all changes adding changesets adding manifests adding file changes transaction abort! rollback completed abort: premature EOF reading chunk (got 91303 bytes, expected 1542634) I've tried pretty much everything I can think of, but with no success. I followed the steps of Jeremy Skinners guide on doing it for IIS7, but on an IIS6 server. I found a post where the author was experiencing the same issue, but was unable to find a solution. So far it looks like the solution is to migrate to Apache or upgrade to Windows 2008/II7 .. but if someone knows how to solve this, please let me know

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• NameNotFoundException when calling a EJB in Weblogic 10.3

  - by XpiritO

  First of all, I'd like to underline that I've already read other posts in StackOverflow (example) with similar questions, but unfortunately I didn't manage to solve this problem with the answers I saw on those posts. I have no intention to repost a question that has already been answered, so if that's the case, I apologize and I'd be thankful to whom points out where the solution is posted. Here is my question: I'm trying to deploy an EJB in WebLogic 10.3.2. The purpose is to use a specific WorkManager to execute work produced in the scope of this component. With this in mind, I've set up a WorkManager (named ResponseTimeReqClass-0) on my WebLogic configuration, using the web-based interface (Environment Work Managers New). Here is a screenshot: Here is my session bean definition and descriptors: OrquestratorRemote.java package orquestrator; import javax.ejb.Remote; @Remote public interface OrquestratorRemote { public void initOrquestrator(); } OrquestratorBean.java package orquestrator; import javax.ejb.Stateless; import com.siemens.ecustoms.orchestration.eCustomsOrchestrator; @Stateless(name = "OrquestratorBean", mappedName = "OrquestratorBean") public class OrquestratorBean implements OrquestratorRemote { public void initOrquestrator(){ eCustomsOrchestrator orquestrator = new eCustomsOrchestrator(); orquestrator.run(); } } META-INF\ejb-jar.xml <?xml version='1.0' encoding='UTF-8'?> <ejb-jar xmlns='http://java.sun.com/xml/ns/javaee' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' metadata-complete='true'> <enterprise-beans> <session> <ejb-name>OrquestradorEJB</ejb-name> <mapped-name>OrquestratorBean</mapped-name> <business-remote>orquestrator.OrquestratorRemote</business-remote> <ejb-class>orquestrator.OrquestratorBean</ejb-class> <session-type>Stateless</session-type> <transaction-type>Container</transaction-type> </session> </enterprise-beans> <assembly-descriptor></assembly-descriptor> </ejb-jar> META-INF\weblogic-ejb-jar.xml (I've placed work manager configuration in this file, as I've seen on a tutorial on the internet) <weblogic-ejb-jar xmlns="http://www.bea.com/ns/weblogic/90" xmlns:j2ee="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.bea.com/ns/weblogic/90 http://www.bea.com/ns/weblogic/90/weblogic-ejb-jar.xsd"> <weblogic-enterprise-bean> <ejb-name>OrquestratorBean</ejb-name> <jndi-name>OrquestratorBean</jndi-name> <dispatch-policy>ResponseTimeReqClass-0</dispatch-policy> </weblogic-enterprise-bean> </weblogic-ejb-jar> I've compiled this into a JAR and deployed it on WebLogic, as a library shared by administrative server and all cluster nodes on my solution (it's in "Active" state). As I've seen in several tutorials and examples, I'm using this code on my application, in order to call the bean: InitialContext ic = null; try { Hashtable<String,String> env = new Hashtable<String,String>(); env.put(Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory"); env.put(Context.PROVIDER_URL, "t3://localhost:7001"); ic = new InitialContext(env); } catch(Exception e) { System.out.println("\n\t Didn't get InitialContext: "+e); } // try { Object obj = ic.lookup("OrquestratorBean"); OrquestratorRemote remote =(OrquestratorRemote)obj; System.out.println("\n\n\t++ Remote => "+ remote.getClass()); System.out.println("\n\n\t++ initOrquestrator()"); remote.initOrquestrator(); } catch(Exception e) { System.out.println("\n\n\t WorkManager Exception => "+ e); e.printStackTrace(); } Unfortunately, this don't work. It throws an exception on runtime, as follows: WorkManager Exception = javax.naming.NameNotFoundException: Unable to resolve 'OrquestratorBean'. Resolved '' [Root exception is javax.naming.NameNotFoundException: Unable to resolve 'OrquestratorBean'. Resolved '']; remaining name 'OrquestratorBean' After seeing this, I've even tried changing this line Object obj = ic.lookup("OrquestratorBean"); to this: Object obj = ic.lookup("OrquestratorBean#orquestrator.OrquestratorBean"); but the result was the same runtime exception. Can anyone please help me detecting what am I doing wrong here? I'm having a bad time debugging this, as I don't know how to check out what may be causing this issue... Thanks in advance for your patience and help.

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• Studying MySQL, SQLite source code to learn about RDBMS implementation

  - by Yang

  I know implementing database is a huge topic, but I want to have a basic understanding of how database systems work (e.g. memory management, binary tree, transaction, sql parsing, multi-threading, partitions, etc) by investigating the source code of the database. Since there are a few already proven very robust open source databases like mysql, sqlite and so on. However, the code are very complicated and I have no clue where to start. Also I find that the old school database textbooks are only explaining the theory, not the implementation details. Can anyone suggest how I should get started and if there are any books that emphasis on the technology and techniques of building dbms used in modern database industry?

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• jpa IllegalArgumentException exception

  - by Bunny Rabbit

  i've three entity classes in my project public class Blobx { @ManyToOne private Userx user; @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Key id; } public class Index { @Id private String keyword; @OneToMany(cascade = CascadeType.PERSIST) private List<Blobx> blobs; } public class Userx { @Id private String name; @OneToMany(mappedBy = "user") private List<Blobx>blobs; } while running the following lines app engine throws an exception em.getTransaction().begin(); em.persist(index); em.getTransaction().commit();//exception is thrown em.close(); as Caused by: java.lang.IllegalArgumentException: can't operate on multiple entity groups in a single transaction. found both Element { type: "Index" name: "function" } and Element { type: "Userx" name: "18580476422013912411" } i can't understand what's wrong?

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• Active Merchant Paypal Recurring Pem Error Neither Pub Nor Priv Key

  - by Andy

  Hi, I am trying to use ActiveMerchant to make a Paypal Recurring transaction call. I used the patch here: http://blog.vuzit.com/2008/08/01/paypal-website-payments-pro-us-with-recurring-billing-and-activemerchant/ and I'm stuck on this here: ActiveMerchant::Billing::PaypalGateway.pem_file = File.read('paypal_cert.pem') I am fairly sure the pem file is correctly downloaded from paypal. The error I receive is: /Library/Ruby/Gems/1.8/gems/activemerchant-1.5.1/lib/active_merchant/lib/connection.rb:129:in initialize': Neither PUB key nor PRIV key:: nested asn1 error (OpenSSL::PKey::RSAError) from /Library/Ruby/Gems/1.8/gems/activemerchant-1.5.1/lib/active_merchant/lib/connection.rb:129:innew' from calling the commit method from line 49 of paypal_pro_recurring. I simply have 2 files - paypal_pro_recurring.rb from the tutorial and paypalTest.rb which I wrote and simply requires all files and calls the function. I hope the error isn't something stupid like I must require from an environment file or something. Thanks all!

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• Lock Question - 'U' lock vs. 'X' lock

  - by Randy Minder

  I have a couple questions concerning Update (U) locks and Exclusive (X) locks. 1) Am I correct that an 'X' lock is put on a resource when the resource is about to get updated? 2) I'm a little fuzzy on U locks. Am I correct that a U lock is applied when a resource is read and SQL Server thinks it might need to update the resource later? If this is correct, would a 'U' lock only get applied when a read is being done within the context of a transaction? I guess I'm trying to understand under what circumstances SQL Server thinks it might need to update later a row it just read now. Thanks - Randy

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• Format date in hql query

  - by user115520

  hi all, i want to format date to string in hql select, for example i have purchasing data with transaction date in it: class Purchase { private Date datePurchase } and i want to select date in a certain format, for example yyyyMMdd, can i do that in hql? actually i can iterate through all purchase data returned by query, and start to format the date using SimpleDateFormat, but i don't want do that, i want to do it in hql, is it posible? fyi, i just want to return the id and date string only, not all Purchase field. thak you all for any help.

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• operator not defined for System.Data.SqlClient.SqlConnection and System.Data.SqlClient.SqlConnection

  - by Beta033

  i hope i'm just doing something wrong here. Ideally i'm trying to open the connection, open a transaction execute a ton of prebuilt sqlstatements (with parameters) against this connection then close the connection. ideally all in the same batch. It's easy enough to wrap this all in a for loop, however i'd like to use the forEach function of the list generic to set the connection as it'll probably be faster than my implementation of calling List.Item(i) in the loop but i get some strange errors. Dim sqlStatements As List(Of SqlCommand) = New List(Of SqlCommand) Dim conn As SqlClient.SqlConnection = New SqlConnection("...") sqlStatements.Item(0).Connection = conn 'Works sqlStatements.ForEach(Function(ByRef cmd As SqlCommand) cmd.Connection = conn) 'ERROR: Operator '=' is not defined for types 'System.Data.SqlClient.SqlConnection' 'and 'System.Data.SqlClient.SqlConnection What does this error really mean?

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• HiLo: how to control Low values

  - by Sandor Drieënhuizen

  I'm using the HiLo generator in my S#rpArchitecture/NHibernate project and I'm performing a large import batch. I've read somewhere about the possibility to predict the Low values of any new records because they are generated on the client. I figure this means I can control the Low values myself or at least fetch the next Low value from somewhere. The reason I want to use this is that I want to set relations to other entities I'm about to insert. They do not exist yet but will be inserted before the batch transaction completes. However, I cannot find information about how to set the Low values or how to get what Low value is up next. Any ideas?

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• Is there a way to make PHP progressively output as the script executes?

  - by Iain Fraser

  So I'm writing a disposable script for my own personal single use and I want to be able see how the process is going. Basically I'm processing a couple of thousand media releases and sending them to our new CMS. So I don't hammer the CMS, I'm making the script sleep for a couple of seconds after every 5 requests. I would like - as the script is executing - to be able to see my echos telling me the script is going to sleep or that the last transaction with the webservice was successful. Is this possible in PHP? Thanks for your help! Iain

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• A checklist for fixing .NET applications to SQL Server timeout problems and improve execution time

  - by avgbody

  A checklist for improving execution time between .NET code and SQL Server. Anything from the basic to weird solutions is appreciated. Code: Change default timeout in command and connection by avgbody. Use stored procedure calls instead of inline sql statement by avgbody. Look for blocking/locking using Activity monitor by Jay Shepherd. SQL Server: Watch out for parameter sniffing in stored procedures by AlexCuse. Beware of dynamically growing the database by Martin Clarke. Use Profiler to find any queries/stored procedures taking longer then 100 milliseconds by BradO. Increase transaction timeout by avgbody. Convert dynamic stored procedures into static ones by avgbody. Check how busy the server is by Jay Shepherd.

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• Fastest way to do mass update

  - by user356004

  Let’s say you have a table with about 5 million records and a nvarchar(max) column populated with large text data. You want to set this column to NULL if SomeOtherColumn = 1 in fastest possible way. The brute force UPDATE does not work very well here because it will create large implicit transaction and take forever. Doing updates in small batches of 50K records at a time works but it’s still taking 47 hrs to complete on beefy 32 core/64GB server. Is there any way to do this update faster? Are there any magic query hints/table options that scarifies something else (like concurrency) in exchange of speed? NOTE: Creating temp table or temp column is not an option because this nvarchar(max) column involves lots of data and so consumes lots of space!

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• Unit Testing XML independent of physical XML file

  - by RAbraham

  Hi, My question is: In JUnit, How do I setup xml data for my System Under Test(SUT) without making the SUT read from an XML file physically stored on the file system Background: I am given a XML file which contains rules for creation of an invoice. My job is to convert these rules from XMl to Java Objects e.g. If there is a tag as below in my XML file which indicates that after a period of 30 days, the transaction cannot be invoiced <ExpirationDay>30</ExpirationDay> this converts to a Java class , say ExpirationDateInvoicingRule I have a class InvoiceConfiguration which should take the XML file and create the *InvoicingRule objects. I am thinking of using StAX to parse the XML document within InvoiceConfiguration Problem: I want to unit test InvoiceConfiguration. But I dont want InvoiceConfiguration to read from an xml file physically on the file system . I want my unit test to be independent of any physical stored xml file. I want to create a xml representation in memory. But a StAX parser only takes FileReader( or I can play with the File Object)

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