Troubleshooting
Problem
The number of threads grows on the ImpactUI server, causing a native OutOfMemory condition.
Symptom
The ImpactUI server grows unresponsive as it runs out of memory.
On running out of memory, for this scenario, the generated javacore file will contain the following information :
Dump Event "systhrow" (00040000) Detail "java/lang/OutOfMemoryError" "Failed to create a thread: retVal -1073741830, errno 11" received
The number of threads in the javacore file will run to thousands. Normally, the server will have hundreds of threads, not thousands.
The messages.log for the ImpactUI server will contain an error showing the problem is related to restdb, as follows:
java.sql.SQLException: Failed to start database 'restdb' with class loader com.ibm.ws.classloading.internal.AppClassLoader@84b8ecd0, see the next exception for details.Document Location
Worldwide
[{"Type":"MASTER","Line of Business":{"code":"LOB77","label":"Automation Platform"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSB2GF","label":"Netcool\/Impact"},"ARM Category":[{"code":"a8m500000008ZuvAAE","label":"Impact-\u003EGUIServer"}],"ARM Case Number":"","Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.1.0"}]
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Document Information
Modified date:
09 May 2025
UID
ibm16962183