You are viewing a plain text version of this content. The canonical link for it is here.
Posted to derby-dev@db.apache.org by "Manish Khettry (JIRA)" <ji...@apache.org> on 2007/07/02 05:25:04 UTC
[jira] Updated: (DERBY-2689) Deadlock with GenericPreparedStatement
[ https://issues.apache.org/jira/browse/DERBY-2689?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Manish Khettry updated DERBY-2689:
----------------------------------
Attachment: deadlock2.patch.txt
Revised patch. I cleaned up some of the spurious characters in the comments, moved setting of unusedActs=false to the top of the loop and reduced some whitespace diffs.
> Deadlock with GenericPreparedStatement
> --------------------------------------
>
> Key: DERBY-2689
> URL: https://issues.apache.org/jira/browse/DERBY-2689
> Project: Derby
> Issue Type: Bug
> Components: JDBC
> Affects Versions: 10.2.2.0
> Environment: Windows
> Reporter: Marc Ewert
> Assignee: Manish Khettry
> Priority: Critical
> Attachments: deadlock.patch.txt, deadlock2.patch.txt, TestDerbyPreparedStatements.java
>
>
> We encountered two times a deadlock inside of derby. It seems that we can't workaround it. The involved two threads are attached, it looks like a classical deadlock:
> "Thread-22" daemon prio=6 tid=0x0cdaa400 nid=0x1c0 waiting for monitor entry [0x1317f000..0x1317fd4c]
> java.lang.Thread.State: BLOCKED (on object monitor)
> at org.apache.derby.impl.sql.GenericPreparedStatement.finish(Unknown Source)
> - waiting to lock <0x052f4d70> (a org.apache.derby.impl.sql.GenericPreparedStatement)
> at org.apache.derby.impl.sql.execute.BaseActivation.close(Unknown Source)
> at org.apache.derby.impl.sql.conn.GenericLanguageConnectionContext.addActivation(Unknown Source)
> at org.apache.derby.impl.sql.execute.BaseActivation.initFromContext(Unknown Source)
> at org.apache.derby.impl.services.reflect.LoadedGeneratedClass.newInstance(Unknown Source)
> at org.apache.derby.impl.services.reflect.ReflectGeneratedClass.newInstance(Unknown Source)
> at org.apache.derby.impl.sql.GenericActivationHolder.<init>(Unknown Source)
> at org.apache.derby.impl.sql.GenericPreparedStatement.getActivation(Unknown Source)
> - locked <0x05306f88> (a org.apache.derby.impl.sql.GenericPreparedStatement)
> at org.apache.derby.impl.jdbc.EmbedPreparedStatement.<init>(Unknown Source)
> at org.apache.derby.impl.jdbc.EmbedPreparedStatement20.<init>(Unknown Source)
> at org.apache.derby.impl.jdbc.EmbedPreparedStatement30.<init>(Unknown Source)
> at org.apache.derby.impl.jdbc.EmbedPreparedStatement40.<init>(Unknown Source)
> at org.apache.derby.jdbc.Driver40.newEmbedPreparedStatement(Unknown Source)
> at org.apache.derby.impl.jdbc.EmbedConnection.prepareStatement(Unknown Source)
> - locked <0x047beb00> (a org.apache.derby.impl.jdbc.EmbedConnection40)
> at org.apache.derby.impl.jdbc.EmbedConnection.prepareStatement(Unknown Source)
> [custom methods]
> "ThreadPoolThread-SyncScheduler-3-1" prio=2 tid=0x0e620400 nid=0xfec waiting for monitor entry [0x10a7e000..0x10a7fa14]
> java.lang.Thread.State: BLOCKED (on object monitor)
> at org.apache.derby.impl.sql.GenericPreparedStatement.finish(Unknown Source)
> - waiting to lock <0x05306f88> (a org.apache.derby.impl.sql.GenericPreparedStatement)
> at org.apache.derby.impl.sql.execute.BaseActivation.close(Unknown Source)
> at org.apache.derby.impl.sql.conn.GenericLanguageConnectionContext.addActivation(Unknown Source)
> at org.apache.derby.impl.sql.execute.BaseActivation.initFromContext(Unknown Source)
> at org.apache.derby.impl.services.reflect.LoadedGeneratedClass.newInstance(Unknown Source)
> at org.apache.derby.impl.services.reflect.ReflectGeneratedClass.newInstance(Unknown Source)
> at org.apache.derby.impl.sql.GenericActivationHolder.<init>(Unknown Source)
> at org.apache.derby.impl.sql.GenericPreparedStatement.getActivation(Unknown Source)
> - locked <0x052f4d70> (a org.apache.derby.impl.sql.GenericPreparedStatement)
> at org.apache.derby.impl.jdbc.EmbedPreparedStatement.<init>(Unknown Source)
> at org.apache.derby.impl.jdbc.EmbedPreparedStatement20.<init>(Unknown Source)
> at org.apache.derby.impl.jdbc.EmbedPreparedStatement30.<init>(Unknown Source)
> at org.apache.derby.impl.jdbc.EmbedPreparedStatement40.<init>(Unknown Source)
> at org.apache.derby.jdbc.Driver40.newEmbedPreparedStatement(Unknown Source)
> at org.apache.derby.impl.jdbc.EmbedConnection.prepareStatement(Unknown Source)
> - locked <0x04225178> (a org.apache.derby.impl.jdbc.EmbedConnection40)
> at org.apache.derby.impl.jdbc.EmbedConnection.prepareStatement(Unknown Source)
> [custom methods]
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.