i have 50M of DB. i don't think that it can take down the instance. but i set -Xmx32m and nothing changed.
i think that is not in settings. that is something fundamental. any ideas? 2012/5/4 Ramsey Gurley <[email protected]> > If you are fetching tens of thousands of rows for a list page, you may > want to consider using the ERXBatchingDisplayGroup to minimize memory > usage. By default, the WODisplayGroup pulls all the EOs into memory. The > batching display group uses the database to handle the pagination. It only > creates the EO instances for the displayed batch. > > If you're using a EODetailDataSource in the list page, the batching > display group doesn't work AFAIK. In the case of large to-many > relationships though, I would recommend you simply not model it as a > relationship and handle it in code. In that case, you'd probably want to > place a limit on your fetch spec to prevent all the EOs being pulled into > memory. Big to-many relationships tend to cause issues when you > addObjectToBothSides anyway. > > Ramsey > > On May 4, 2012, at 6:58 AM, Ron X wrote: > > > i have small database - about 50 Mb... > > > > code: > > ListPageInterface listPage = > D2W.factory().listPageForEntityNamed( > > Song.ENTITY_NAME, session()); > > EODataSource dataSource = new EODatabaseDataSource(session() > > .defaultEditingContext(), Song.ENTITY_NAME); > > listPage.setDataSource(dataSource); > > > > return (WOComponent) listPage; > > > > and error: > > > > N 19.07 MB used/104.87 MB free [WorkerThread8] > (ERXNSLogLog4jBridge.java:43) - > <er.extensions.appserver.ERXComponentRequestHandler>: Exception occurred > while handling request: > > com.webobjects.foundation.NSForwardException > [java.lang.OutOfMemoryError] Java heap space:java.lang.OutOfMemoryError: > Java heap space > > [2012-5-4 6:54:11 PDT] <WorkerThread8> > com.webobjects.foundation.NSForwardException [java.lang.OutOfMemoryError] > Java heap space:java.lang.OutOfMemoryError: Java heap space > > at > com.webobjects.foundation.NSForwardException._runtimeExceptionForThrowable(NSForwardException.java:45) > > at > com.webobjects.eocontrol.EOEditingContext.handleError(EOEditingContext.java:2971) > > at > com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:4071) > > at > er.extensions.eof.ERXEC.objectsWithFetchSpecification(ERXEC.java:1302) > > at > com.webobjects.eoaccess.EODatabaseDataSource.fetchObjects(EODatabaseDataSource.java:589) > > at > com.webobjects.appserver.WODisplayGroup.fetch(WODisplayGroup.java:2132) > > at > er.extensions.appserver.ERXDisplayGroup.fetch(ERXDisplayGroup.java:135) > > at > er.directtoweb.pages.ERD2WListPage._fetchDisplayGroup(ERD2WListPage.java:461) > > at > er.directtoweb.pages.ERD2WListPage.setupPhase(ERD2WListPage.java:561) > > at > er.directtoweb.pages.ERD2WListPage.appendToResponse(ERD2WListPage.java:492) > > at > com.webobjects.appserver.WOSession.appendToResponse(WOSession.java:1385) > > at > er.extensions.appserver.ERXSession.appendToResponse(ERXSession.java:558) > > at > com.webobjects.appserver.WOApplication.appendToResponse(WOApplication.java:1794) > > at > er.extensions.appserver.ERXApplication.appendToResponse(ERXApplication.java:1994) > > at > er.extensions.appserver.ERXComponentRequestHandler._dispatchWithPreparedPage(ERXComponentRequestHandler.java:190) > > at > er.extensions.appserver.ERXComponentRequestHandler._dispatchWithPreparedSession(ERXComponentRequestHandler.java:235) > > at > er.extensions.appserver.ERXComponentRequestHandler._dispatchWithPreparedApplication(ERXComponentRequestHandler.java:268) > > at > er.extensions.appserver.ERXComponentRequestHandler._handleRequest(ERXComponentRequestHandler.java:302) > > at > er.extensions.appserver.ERXComponentRequestHandler.handleRequest(ERXComponentRequestHandler.java:374) > > at > com.webobjects.appserver.WOApplication.dispatchRequest(WOApplication.java:1687) > > at > er.extensions.appserver.ERXApplication.dispatchRequestImmediately(ERXApplication.java:2098) > > at > er.extensions.appserver.ERXApplication.dispatchRequest(ERXApplication.java:2063) > > at > com.webobjects.appserver._private.WOWorkerThread.runOnce(WOWorkerThread.java:144) > > at > com.webobjects.appserver._private.WOWorkerThread.run(WOWorkerThread.java:226) > > at java.lang.Thread.run(Thread.java:680) > > Caused by: java.lang.OutOfMemoryError: Java heap space > > at com.mysql.jdbc.MysqlIO.nextRowFast(MysqlIO.java:2145) > > at com.mysql.jdbc.MysqlIO.nextRow(MysqlIO.java:1922) > > at com.mysql.jdbc.MysqlIO.readSingleRowSet(MysqlIO.java:3425) > > at com.mysql.jdbc.MysqlIO.getResultSet(MysqlIO.java:481) > > at > com.mysql.jdbc.MysqlIO.readResultsForQueryOrUpdate(MysqlIO.java:3120) > > at com.mysql.jdbc.MysqlIO.readAllResults(MysqlIO.java:2288) > > at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2709) > > at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2671) > > at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2621) > > at com.mysql.jdbc.StatementImpl.execute(StatementImpl.java:842) > > at com.mysql.jdbc.StatementImpl.execute(StatementImpl.java:681) > > at > com.webobjects.jdbcadaptor.JDBCChannel._bindInputVariablesWithBindingsAndExecute(JDBCChannel.java:272) > > at > com.webobjects.jdbcadaptor.JDBCChannel._evaluateExpression(JDBCChannel.java:337) > > at > com.webobjects.jdbcadaptor.JDBCChannel.evaluateExpression(JDBCChannel.java:296) > > at > com.webobjects.jdbcadaptor.JDBCChannel.selectAttributes(JDBCChannel.java:220) > > at > com.webobjects.eoaccess.EODatabaseChannel._selectWithFetchSpecificationEditingContext(EODatabaseChannel.java:897) > > at > com.webobjects.eoaccess.EODatabaseChannel.selectObjectsWithFetchSpecification(EODatabaseChannel.java:234) > > at > com.webobjects.eoaccess.EODatabaseContext._objectsWithFetchSpecificationEditingContext(EODatabaseContext.java:3055) > > at > er.extensions.eof.ERXDatabaseContext._objectsWithFetchSpecificationEditingContext(ERXDatabaseContext.java:66) > > at > com.webobjects.eoaccess.EODatabaseContext.objectsWithFetchSpecification(EODatabaseContext.java:3195) > > at > com.webobjects.eocontrol.EOObjectStoreCoordinator.objectsWithFetchSpecification(EOObjectStoreCoordinator.java:488) > > at > com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:4069) > > at > er.extensions.eof.ERXEC.objectsWithFetchSpecification(ERXEC.java:1302) > > at > com.webobjects.eoaccess.EODatabaseDataSource.fetchObjects(EODatabaseDataSource.java:589) > > at > com.webobjects.appserver.WODisplayGroup.fetch(WODisplayGroup.java:2132) > > at > er.extensions.appserver.ERXDisplayGroup.fetch(ERXDisplayGroup.java:135) > > at > er.directtoweb.pages.ERD2WListPage._fetchDisplayGroup(ERD2WListPage.java:461) > > at > er.directtoweb.pages.ERD2WListPage.setupPhase(ERD2WListPage.java:561) > > at > er.directtoweb.pages.ERD2WListPage.appendToResponse(ERD2WListPage.java:492) > > at > com.webobjects.appserver.WOSession.appendToResponse(WOSession.java:1385) > > at > er.extensions.appserver.ERXSession.appendToResponse(ERXSession.java:558) > > at > com.webobjects.appserver.WOApplication.appendToResponse(WOApplication.java:1794) > > > > WARN 19.07 MB used/104.87 MB free [WorkerThread8] > (ERXNSLogLog4jBridge.java:43) - Ran out of memory, killing this instance > > FATAL 19.33 MB used/104.61 MB free [WorkerThread8] > (ERXApplication.java:1935) - Ran out of memory, killing this instance > > FATAL 19.33 MB used/104.61 MB free [WorkerThread8] > (ERXApplication.java:1936) - Ran out of memory, killing this instance > > OutOfMemoryError: Java heap space > > at com.mysql.jdbc.MysqlIO.nextRowFast(MysqlIO.java:2145) > > at com.mysql.jdbc.MysqlIO.nextRow(MysqlIO.java:1922) > > at com.mysql.jdbc.MysqlIO.readSingleRowSet(MysqlIO.java:3425) > > at com.mysql.jdbc.MysqlIO.getResultSet(MysqlIO.java:481) > > at > com.mysql.jdbc.MysqlIO.readResultsForQueryOrUpdate(MysqlIO.java:3120) > > at com.mysql.jdbc.MysqlIO.readAllResults(MysqlIO.java:2288) > > at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2709) > > at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2671) > > at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2621) > > at com.mysql.jdbc.StatementImpl.execute(StatementImpl.java:842) > > at com.mysql.jdbc.StatementImpl.execute(StatementImpl.java:681) > > ... skipped 7 stack elements > > at > er.extensions.eof.ERXDatabaseContext._objectsWithFetchSpecificationEditingContext(ERXDatabaseContext.java:66) > > ... skipped 1 stack elements > > at > com.webobjects.eocontrol.EOObjectStoreCoordinator.objectsWithFetchSpecification(EOObjectStoreCoordinator.java:488) > > at > com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:4069) > > at > er.extensions.eof.ERXEC.objectsWithFetchSpecification(ERXEC.java:1302) > > ... skipped 1 stack elements > > at > com.webobjects.appserver.WODisplayGroup.fetch(WODisplayGroup.java:2132) > > at > er.extensions.appserver.ERXDisplayGroup.fetch(ERXDisplayGroup.java:135) > > at > er.directtoweb.pages.ERD2WListPage._fetchDisplayGroup(ERD2WListPage.java:461) > > at > er.directtoweb.pages.ERD2WListPage.setupPhase(ERD2WListPage.java:561) > > ... skipped 4 stack elements > > Exception in thread "Poller SunPKCS11-Darwin" > java.lang.OutOfMemoryError: Java heap space > > at sun.security.pkcs11.wrapper.PKCS11.C_GetSlotInfo(Native Method) > > at sun.security.pkcs11.SunPKCS11.initToken(SunPKCS11.java:767) > > at sun.security.pkcs11.SunPKCS11.access$100(SunPKCS11.java:42) > > at sun.security.pkcs11.SunPKCS11$TokenPoller.run(SunPKCS11.java:700) > > at java.lang.Thread.run(Thread.java:680) > > 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