OutOfMemory Error or Poor Performance due to XML Backup

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コミュニティに質問

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症状

Performance is poor, or the instance runs out of heap space memory.

For OutOfMemory Errors, logs look like:

2010-08-25 03:07:30,047 JiraQuartzScheduler_Worker-2 ERROR ServiceRunner    Backup Service [jira.action.admin.DataExport] Error exporting: java.lang.OutOfMemoryError: Java heap space

For poor performance, thread dumps include threads like:

"JiraQuartzScheduler_Worker-0" prio=10 tid=0x00002aac50a61800 nid=0x21b5 runnable [0x0000000040f37000]
   java.lang.Thread.State: RUNNABLE
	at java.net.SocketInputStream.socketRead0(Native Method)
	at java.net.SocketInputStream.read(SocketInputStream.java:129)
	at oracle.net.ns.Packet.receive(Unknown Source)
	at oracle.net.ns.DataPacket.receive(Unknown Source)
	at oracle.net.ns.NetInputStream.getNextPacket(Unknown Source)
	at oracle.net.ns.NetInputStream.read(Unknown Source)
	at oracle.net.ns.NetInputStream.read(Unknown Source)
	at oracle.net.ns.NetInputStream.read(Unknown Source)
	at oracle.jdbc.driver.T4CMAREngine.unmarshalUB1(T4CMAREngine.java:979)
	at oracle.jdbc.driver.T4CMAREngine.unmarshalSB1(T4CMAREngine.java:951)
	at oracle.jdbc.driver.T4C8TTILob.receiveReply(T4C8TTILob.java:775)
	at oracle.jdbc.driver.T4C8TTILob.getChunkSize(T4C8TTILob.java:292)
	at oracle.jdbc.driver.T4CConnection.getChunkSize(T4CConnection.java:2090)
	- locked <0x00002aaace9e0240> (a oracle.jdbc.driver.T4CConnection)
	at oracle.sql.CLOB.getChunkSize(CLOB.java:477)
	at oracle.sql.CLOB.getBufferSize(CLOB.java:493)
	at oracle.sql.CLOB.getCharacterStream(CLOB.java:253)
	at oracle.jdbc.driver.ClobAccessor.getString(ClobAccessor.java:241)
	at oracle.jdbc.driver.T4CClobAccessor.getString(T4CClobAccessor.java:80)
	at oracle.jdbc.driver.OracleResultSetImpl.getString(OracleResultSetImpl.java:355)
	- locked <0x00002aaad8cb7428> (a oracle.jdbc.driver.OracleResultSetImpl)
	at org.apache.tomcat.dbcp.dbcp.DelegatingResultSet.getString(DelegatingResultSet.java:175)
	at org.ofbiz.core.entity.jdbc.SqlJdbcUtil.getValue(SqlJdbcUtil.java:529)
	at org.ofbiz.core.entity.EntityListIterator.currentGenericValue(EntityListIterator.java:160)
	at org.ofbiz.core.entity.EntityListIterator.next(EntityListIterator.java:237)
	at com.atlassian.jira.action.admin.export.DefaultSaxEntitiesExporter.exportEntities(DefaultSaxEntitiesExporter.java:73)
	at com.atlassian.jira.action.admin.DataExport.execute(DataExport.java:81)
	at webwork.dispatcher.GenericDispatcher.executeAction(GenericDispatcher.java:132)
	at com.atlassian.core.action.DefaultActionDispatcher.execute(DefaultActionDispatcher.java:36)
	at com.atlassian.jira.service.services.export.ExportService.invokedAction(ExportService.java:118)
	at com.atlassian.jira.service.services.export.ExportService.run(ExportService.java:100)
	at com.atlassian.jira.service.JiraServiceContainerImpl.run(JiraServiceContainerImpl.java:56)
	at com.atlassian.jira.service.ServiceRunner.execute(ServiceRunner.java:61)
	at org.quartz.core.JobRunShell.run(JobRunShell.java:191)
	at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:516)

原因

The pertinent line in the thread above is:

com.atlassian.jira.action.admin.DataExport.execute

This signifies that the XML backup is running, and may be consuming resources. The XML backup does not scale well for large JIRA instances.

ソリューション

  1. As a temporary measure, increase JIRA's Heap Space allocation.
  2. For a more permanent solution, use a native database tool as a backup strategy. See Backing Up Data for more information.
最終更新日 2016 年 3 月 30 日

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