IBM Support

OutOfMemoryError (OOM) and Leak Detected in IBM PoolManager When Using Oracle JDBC Driver

Troubleshooting


Problem

OutOfMemoryError or unexpectedly high heap utilization when using Oracle JDBC Driver and stored procedures. Leak detection logic may point to com.ibm.ejs.j2c.PoolManager however the leak is due to how stored procedures are processed by the JDBC Driver.

Symptom

OutOfMemoryError or high heap consumption while using stored procedures with Oracle JDBC. Current heap analyzers will point to the com.ibm.ejs.j2c.PoolManager as the source of the leak.

[{"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Component":"Out of Memory","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF010","label":"HP-UX"},{"code":"PF016","label":"Linux"},{"code":"PF027","label":"Solaris"},{"code":"PF033","label":"Windows"}],"Version":"7.0","Edition":"","Line of Business":{"code":"LOB77","label":"Automation Platform"}}]

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Document Information

More support for:
WebSphere Application Server

Software version:
7.0

Operating system(s):
AIX, HP-UX, Linux, Solaris, Windows

Document number:
400331

Modified date:
03 March 2025

UID

swg21421030

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