Monitoring Application Performance using Websphere Request Metrics
Version 6.x of WebSphere introduced Request Metrics (PMRM), which unlike Performance Monitoring Infrastructure (PMI) metrics, are transaction based.
Monitor SSL Certificate Expiration/Replace Expired SSL Certificates Automatically
Problem : I have websphere systems which are roll forwarded in future and then rolled back to current date. Certain times I get SSL errors in my log despite setting option to replace expired certificates at deployment manager.
How to Locate Connection Leak in Websphere
Websphere connection manager generally will timeout orphaned connections and send it back to connection pool for reuse. If threads do timeout waiting for connection, connection manager will raise Connectionwaittimeoutexception at websphere logs.
Websphere Dmgr- Node Synchronization : WSX509TrustMa E CWPKI0311E
Environment : Websphere 6.1 Vertical Cluster, 2 JVMS
I have websphere servers which time travel in the future. Normally we don’t go forward over an year which is what SSL is valid for but when we cross that date we have problems. The application state changes to “unknown” as nodeagent fails to communicate with dmgr.
Oracle FlashBack Error : ORA-16014: log 3 sequence not archived, no available destinations
Number of my systems are on Oracle 10g with flashback Area allocated. The Archive logs , redo logs & backups are destined at this area. This morning users complained about system being down and when I looked at alrtlog I could see archive error. Read more…
Configuring Websphere Plugin with NAGIOS Monitoring System
1. Download WAS plugin for Nagios from here.
Websphere : Node Synchronise problem
I had a strange problem this morning. The clustered JVMs were up but Nodeagent was failing to synchronise with DMGR leaving applications in partial start state.
Websphere Diagnostic & Tuning Tools : IBM Support Assistant Workbench
Click on relevant Tools to see working example
Websphere Garbage Collection : How it's done
This morning I noticed one of my JVM (managed Node) log file native_stderr.log was over grown to 4GB. “tail -f native_stderr.log” was scrolling pages continuously indicating some issue with JVM garbage collection.
WebSphere Security: Switch off username/password prompt while shutting down services
In previous releases of WebSphere Application Server, when global security was enabled, both administrative and application security were enabled. In WebSphere Application Server V6.1, the concept of global security is split into administrative security and application security, of which each component can be enabled separately. Application security provides application isolation and requirements for authenticating users for the applications in your environment.
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