IY68304: ERROR MESSAGE IN CLIENT MSG.LOG FILE
Closed as program error.
Error message that appears in some Manger Client msg.log files. KEGCAH020 Error While Processing Collector Info - java.lang.NullPointerException KEGCCL020 Stack Trace for Exception: java.lang.NullPointerException java.lang.NullPointerException at KEGC_Client.setSettingChange(KEGC_Client.java:3258) at KEGC_AcceptRequestHelper.ProcessCollectorInfo(KEGC_AcceptRequest Helper.java:1156) at KEGC_AcceptRequestHelper.run(Compiled Code) Error when Manager Client communicates to Central Control. The problem is related to synchronization. When KEGC_Client is initializing, it creates objects in its path, and some of these objects are being used as a thread. In the case of our problem, KEGC_AcceptHelper object which receives the requests from collectors is created at the start of KEGC_Client, and then the thread is started. Depending on how the operating system dispatcher is behaving, it might dispatch the object or not. If the object is dispatched (Which means the KEGC_Client object is now pre-empted, so it is not running), it calls method "setSettingChange" in KEGC_Client which calls one of the method calls in the KEGC_HeartBeat. But, KEGC_HeartBeat object has not been created yet, so it will result in a null pointer exception. But, if KEGC_AcceptHelper is not dispatched at the time of KEGC_Client initialization, then the initialization will continue, and it will create KEGC_HeartBeat object, and now when KEGC_AcceptHelper thread is started, we are not going to get the null pointer exception, because the KEGC_HeartBeat object has been created. That is why sometimes you see the error, and sometimes you don't. Cause: When the ETE Collector starts up it communicates configuration info to the Manager Client. The Manager Client may not have completed its initialization when this communication arrives. Subsequent reference to an initialized state object causes NullPointerException. Effect: Central Control will show incorrect state of the ETE Collector. No other effect.
Startup Manager Client before the ETE Collector.
Error when Manager Client communicates to Central Control.
Reported component name
ETEWTH ENTRPS S
Reported component ID
Last modified date
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fixed component name
ETEWTH ENTRPS S
Fixed component ID
Applicable component levels
More support for:
Tivoli ETEWatch Starter Kit - Professional Edition
Software version: 202
Reference #: IY68304
Modified date: 20 May 2005
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