jvm_heapsize command
You can view and change the maximum heap size of the Java™™ virtual machine (JVM) for the Security Identity Manager WebSphere® Application Server profiles.
The JVM has heap memory, which is a runtime data area where memory for all class instances and arrays are allocated. Heap memory for either servers are created at JVM start-up with a default value that is based on the size of RAM.
If the default value is insufficient to suit the memory consumption of either servers, you can change the maximum heap size to a value that you prefer.
After you change the maximum heap size for either or all server profiles, restart the IBM® Security Identity Manager and Cluster Manager server to apply your changes.
Usage
isimvasvr > isim
isimvasvr: isim > jvm_heapsize
isimvasvr: jvm_heapsize >- reset_max_heapsize
- Reset maximum heap size for ISIM DMGR, Application and Message Member to default value.
- set_max_heapsize
- Set maximum heap size for ISIM DMGR, Application and Message Member.
- show_max_heapsize
- Show maximum heap size for ISIM DMGR, Application and Message Member.
Examples
- At the isimvasrv:jvm_heapsize prompt, enter
show_max_heapsize.
1: DMGR 2: APP_Member 3: MSG_Member Enter index: 1 DMGR max heap size(MB): 2048 - Set a maximum heap size.
At the isimvasrv:jvm_heapsize prompt, enter set_max_heapsize.
1: DMGR 2: APP_Member 3: MSG_Member Enter index: 1 Enter max jvm heap size(MB): 5000 Updating max jvm heap size for DMGR. Please wait... Max heap size updated successfully. Restart Cluster Manager Server and IBM Security Identity Manager server. - Reset the maximum heap size.
At the isimvasrv:jvm_heapsize prompt, enter reset_max_heapsize.
1: DMGR 2: APP_Member 3: MSG_Member Enter index: 1 Are you sure you want to reset the jvm maximum heap size? Enter YES to confirm that you want to continue: YES Reseting max jvm heap size for DMGR. Please wait... Max heap size updated successfully.