Setting the DB2 APP_CTL_HEAP_SZ parameter for large configurations
 Technote (FAQ)
 
Problem
You could encounter a PluginCfgGene X Plugin Cfg error if the DB2 APP_CTL_HEAP_SZ parameter on the administrative repository is not set high enough. IBM recommends that you configure the DB2® APP_CTL_HEAP_SZ parameter on the WebSphere® Application Server administrative repository to at least 512. This recommendation applies to all releases of V3.5 and V4.0, especially in configurations with many objects.
 
Cause
The DB2 APP_CTL_HEAP_SZ value is set too low.
 
Solution
To find out the current size of the APP_CTL_HEAP_SZ value , run:

db2 get db cfg for <databasename>

To increase the size of the APP_CTL_HEAP_SZ value, run:

db2 update db cfg for <databasename> using APP_CTL_HEAP_SZ 512

The following problem is encountered when the APP_CTL_HEAP_SZ value is set at 128 in a V3.5 configuration.

In a V3.5.7 single node configuration, after creating 17 application servers, the next start of an administration server fails with the following exception:

03.11.20 20:21:47:890 JST¨ d002df3 PluginCfgGene X Plugin Cfg Error java.rmi.ServerException:
RemoteException occurred in server thread; nested exception is: com.ibm.ejs.container.UncheckedException: ; nested exception is: java.lang.IllegalStateException com.ibm.ejs.container.UncheckedException: ; nested exception is: java.lang.IllegalStateException java.lang.IllegalStateException ----- Begin backtrace for detail com.ibm.ejs.container.UncheckedException: ; nested exception is: [03.11.20 20:26:17:062 JST] ad9323a4 AdminServer F Encountered an exception in the main method java.rmi.RemoteException: ; nested exception is:
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
com.ibm.websphere.csi.CSITransactionRolledbackException: Transaction rolled back
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:

This problem is resolved by increasing the administrative repository database APP_CTL_HEAP_SZ to 512 in DB2.

 
 
Cross Reference information
Segment Product Component Platform Version Edition
Data & Information Management DB2 Universal Database
 
 


Document Information


Product categories: Software > Application Servers > Distributed Application & Web Servers > WebSphere Application Server > System Management/Repository
Operating system(s): Windows
Software version: 4.0.7
Software edition:
Reference #: 1157338
IBM Group: Software Group
Modified date: Mar 31, 2006