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From "Mayuresh Nirhali (JIRA)" <derby-...@db.apache.org>
Subject [jira] Commented: (DERBY-418) outofmemory error when running large query in autocommit=false mode
Date Mon, 14 Aug 2006 14:12:15 GMT
    [ http://issues.apache.org/jira/browse/DERBY-418?page=comments#action_12427891 ] 
            
Mayuresh Nirhali commented on DERBY-418:
----------------------------------------

Thanks to Andreas and Oystein for pointing out another possibilty that when the statement
objects are GC'd, the activations associated with them are not closed which could be causing
the leak.

I shall work further on this and have assigned this one to myself.

> outofmemory error when running large query in autocommit=false mode
> -------------------------------------------------------------------
>
>                 Key: DERBY-418
>                 URL: http://issues.apache.org/jira/browse/DERBY-418
>             Project: Derby
>          Issue Type: Bug
>          Components: Store
>    Affects Versions: 10.1.1.0
>         Environment: I can reproduce this problem on Win2k/ T42 laptop. jdk141. 
>            Reporter: Sunitha Kambhampati
>         Assigned To: Mayuresh Nirhali
>             Fix For: 10.2.0.0
>
>         Attachments: AutoCommitTest.java
>
>
> On the derby-user list,  Chris reported tihs problem with his application and also a
repro for the problem.  I am logging the jira issue so it doesnt get lost in all the mail.
 (http://www.mail-archive.com/derby-user@db.apache.org/msg01258.html)
> ------from chris's post----------
> I'm running a set of ~50000 queries on one table, using inserts and updates, and i want
to be able to roll them back so i turned off autocommit using setAutoCommit(false).  As the
update runs, the memory used by the JVM increases continually until i get the following exception
about 20% of the way through:
> ERROR 40XT0: An internal error was identified by RawStore module.
>    at org.apache.derby.iapi.error.StandardException.newException(StandardException.java)
>    at org.apache.derby.impl.store.raw.xact.Xact.setActiveState(Xact.java)
>    at org.apache.derby.impl.store.raw.xact.Xact.openContainer(Xact.java)
>    at org.apache.derby.impl.store.access.conglomerate.OpenConglomerate.init(OpenConglomerate.java)
>    at org.apache.derby.impl.store.access.heap.Heap.open(Heap.java)
>    at org.apache.derby.impl.store.access.RAMTransaction.openConglomerate(RAMTransaction.java)
>    at org.apache.derby.impl.store.access.RAMTransaction.openConglomerate(RAMTransaction.java)
>    at org.apache.derby.impl.sql.catalog.DataDictionaryImpl.getDescriptorViaIndex(DataDictionaryImpl.java)
>    at org.apache.derby.impl.sql.catalog.DataDictionaryImpl.locateSchemaRow(DataDictionaryImpl.java)
>    at org.apache.derby.impl.sql.catalog.DataDictionaryImpl.getSchemaDescriptor(DataDictionaryImpl.java)
>    at org.apache.derby.impl.sql.compile.QueryTreeNode.getSchemaDescriptor(QueryTreeNode.java)
>    at org.apache.derby.impl.sql.compile.QueryTreeNode.getSchemaDescriptor(QueryTreeNode.java)
>    at org.apache.derby.impl.sql.compile.FromBaseTable.bindTableDescriptor(FromBaseTable.java)
>    at org.apache.derby.impl.sql.compile.FromBaseTable.bindNonVTITables(FromBaseTable.java)
>    at org.apache.derby.impl.sql.compile.FromList.bindTables(FromList.java)
>    at org.apache.derby.impl.sql.compile.SelectNode.bindNonVTITables(SelectNode.java)
>    at org.apache.derby.impl.sql.compile.DMLStatementNode.bindTables(DMLStatementNode.java)
>    at org.apache.derby.impl.sql.compile.DMLStatementNode.bind(DMLStatementNode.java)
>    at org.apache.derby.impl.sql.compile.ReadCursorNode.bind(ReadCursorNode.java)
>    at org.apache.derby.impl.sql.compile.CursorNode.bind(CursorNode.java)
>    at org.apache.derby.impl.sql.GenericStatement.prepMinion(GenericStatement.java)
>    at org.apache.derby.impl.sql.GenericStatement.prepare(GenericStatement.java)
>    at org.apache.derby.impl.sql.conn.GenericLanguageConnectionContext.prepareInternalStatement(GenericLanguageConnectionContext.java)
>    at org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java)
>    at org.apache.derby.impl.jdbc.EmbedStatement.executeQuery(EmbedStatement.java)
>    at vi.hotspot.database.DataInterface._query(DataInterface.java:181)
>    at vi.hotspot.database.DataInterface.query(DataInterface.java:160)
>    at vi.hotspot.database.UpdateManager.updatePartialTable(UpdateManager.java:518)
>    at vi.hotspot.database.UpdateManager.updatePartialTables(UpdateManager.java:619)
>    at vi.hotspot.database.UpdateManager.run(UpdateManager.java:924)
>    at java.lang.Thread.run(Thread.java:534)
> vi.hotspot.exception.ServerTransactionException
>    at vi.hotspot.database.UpdateManager.updatePartialTable(UpdateManager.java:555)
>    at vi.hotspot.database.UpdateManager.updatePartialTables(UpdateManager.java:619)
>    at vi.hotspot.database.UpdateManager.run(UpdateManager.java:924)
>    at java.lang.Thread.run(Thread.java:534)
> Derby is running in standalone mode. 

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