"Could not Reserve Enough Space for Object Heap" Error Starting OC4J with 2GB in the JVM (Doc ID 398852.1)

Last updated on JULY 03, 2023

Applies to:

Symptoms

When attempting to set the heap size for the JVM process to 2GB, there are some errors and OC4J does not start.

Setting the parameters as follows:

"-server -Xms1600m -Xmx2g -Xmn256m -Xss128k -XX:+UseParallelGC -XX:ParallelGCThreads=4"

then, OC4J does not start.

Changes

Cause

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