2276674 - EP: OOM on Enterprise Portal for WCM Instance

Symptom

In the Enterprise Portal (EP) environment you encounter OOM (Out of Memory) and performance degradation on various server nodes, subsequently the Portal itself becomes inaccessible.
You notice an unexpected restart of the Java engine along with checking the directory /usr/sap/<SID>/<InstID>/j2ee/cluster/serverX you notice an OOM.Hprof file has been automatically generated.
You analyse this OOM.Hprof using SAP Note: 1883568 How to self analyze a Heap Dump using MAT
The results show an Out of Memory error exception referencing Web Content Management (WCM) & the KM Cache "com.sapportals.wcm.util.cache.CacheFactory" which is pulling a significant grouping of the heap allocation.

Environment

EP Release Independent
SAP NetWeaver
SAP Composition Environment

Product

SAP NetWeaver 2004 ; SAP NetWeaver 7.0 ; SAP NetWeaver 7.3 ; SAP NetWeaver 7.4 ; SAP NetWeaver 7.5 ; SAP enhancement package 1 for SAP NetWeaver 7.0 ; SAP enhancement package 1 for SAP NetWeaver 7.3 ; SAP enhancement package 2 for SAP NetWeaver 7.0 ; SAP enhancement package 3 for SAP NetWeaver 7.0

Keywords

Enterprise Portal 7.0, EP 7.0, Enterprise Portal 7.01, EP 7.01, Enterprise Portal 7.02, EP 7.02, Enterprise Portal 7.1, EP 7.1, Enterprise Portal 7.2, EP 7.2, Enterprise Portal 7.30, EP 7.30, Enterprise Portal 7.31, EP 7.31, Enterprise Portal 7.40, EP 7.4, MemoryLRUCache, most memory, statemanagement service, resources, OOM (Out of Memory), performance, degradation, server nodes, inaccessible, unexpected, restart, Java engine, OOM.Hprof file, analyze, Heap Dump, MAT, Web Content Management (WCM), KM Cache, wcm.util, CacheFactory, heap allocation

, KBA , EP-KM-FWK-RF , Repository Framework , EP-KM-FWK , Framework , Problem

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