db-derby-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Kathey Marsden (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (DERBY-2990) ResultSet.getBlob holds locks even with READ_UNCOMMITTED isolation level
Date Mon, 07 Jul 2008 19:28:31 GMT

     [ https://issues.apache.org/jira/browse/DERBY-2990?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kathey Marsden resolved DERBY-2990.
-----------------------------------

    Resolution: Won't Fix

Øystein  indicated that the current behavior is intentional.


> ResultSet.getBlob holds locks even with READ_UNCOMMITTED isolation level
> ------------------------------------------------------------------------
>
>                 Key: DERBY-2990
>                 URL: https://issues.apache.org/jira/browse/DERBY-2990
>             Project: Derby
>          Issue Type: Bug
>          Components: JDBC
>    Affects Versions: 10.1.3.1, 10.2.2.0, 10.3.1.4, 10.4.1.3
>            Reporter: Kathey Marsden
>         Attachments: GetBlobLocks.java
>
>
> ResultSet.getBlob() holds locks even when isolation level is set to TRANSACTION_READ_UNCOMMITTED.
  See attached repro
>  java GetBlobLocks
> Exception in thread "main" ERROR 40XL1: A lock could not be obtained within the time
requested
>         at org.apache.derby.iapi.error.StandardException.newException(Unknown Source)
>         at org.apache.derby.impl.services.locks.LockSet.lockObject(Unknown Source)
>         at org.apache.derby.impl.services.locks.SinglePool.lockAnObject(Unknown Source)
>         at org.apache.derby.impl.services.locks.SinglePool.lockObject(Unknown Source)
>         at org.apache.derby.impl.store.raw.xact.RowLocking3.lockRecordForWrite(Unknown
Source)
>         at org.apache.derby.impl.store.access.conglomerate.OpenConglomerate.lockPositionForWrite(Unknown
Source)
>         at org.apache.derby.impl.store.access.conglomerate.GenericConglomerateController.delete(Unknown
Source)
>         at org.apache.derby.impl.sql.execute.RowChangerImpl.deleteRow(Unknown Source)
>         at org.apache.derby.impl.sql.execute.DeleteResultSet.collectAffectedRows(Unknown
Source)
>         at org.apache.derby.impl.sql.execute.DeleteResultSet.open(Unknown Source)
>         at org.apache.derby.impl.sql.GenericPreparedStatement.execute(Unknown Source)
>         at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(Unknown Source)
>         at org.apache.derby.impl.jdbc.EmbedStatement.execute(Unknown Source)
>         at org.apache.derby.impl.jdbc.EmbedStatement.executeUpdate(Unknown Source)
>         at GetBlobLocks.testBlobLocks(GetBlobLocks.java:46)
>         at GetBlobLocks.main(GetBlobLocks.java:11)
> [C:/kmarsden/repro/getblob] echo $WS

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message