WebLogic AdminServer Process Keeps Spawning Threads Until OutOfMemoryError Exception Occurs (Doc ID 2966085.1)

Last updated on AUGUST 11, 2023

Applies to:

Symptoms

On the WebLogic Administration Console, the AdminServer goes into FAILED or WARNING state while the Managed Servers are still running.

A thread dump on the AdminServer lists a large number of RUNNABLE daemon worker threads (with similar stack traces) that spawn soon after the AdminServer reaches a RUNNING state during start-up and continue during runtime operations.  Each daemon worker thread connects to the embedded LDAP, reads the data input stream, and then goes into indefinite wait state.  Approximately 4-5 threads spawn every minute and these spawned threads accumulate in heap memory until an OutOfMemoryError exception occurs and the JVM running the WLS Administration Console application becomes unstable.

For example, a thread dump may contain 84 threads with a stack trace similar to the following:

Cause

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