Patching IBM WebSphere Application Server (WAS) is something that is largely ignored by most clients. Once they have their system up and running they may patch Maximo but they tend to forget about WAS. Patching WAS helps provide a better experience for Maximo users and may fix vulnerabilities that could allow malicious users and code have access to your precious data.
IBM WebSphere has published a technote for the Out of Memory problem in SDK 1.6 SR9. The out of memory problem has been experienced in Maximo environments using WebSphere 7.0.
Both Maximo and SCCD recommend using WebSphere 7.0 fixpack 27 or higher with Java SDK 1.6.0 SR12 Cumulative Fix. Find more information Here