Starting up SOA - java.lang.OutOfMemoryError: Java heap space

It's likely that you've either run out of memory, or that the heap size allocated is insufficient
August 10, 2014
SOAOIM11gR2PS2WeblogicJAVA

SOA Platform is running and accepting requests though you may then experience the following error:

Error oracle.soa.b2b.engine BEA-000000 java.lang.OutOfMemoryError: Java heap space


SOLUTION

within a terminal, run free -m to determine the available memory.

https://technicalconfessions.com/images/postimages/postimages/_307_3_freeing up java memory for weblogic servers.png

Then count up the free, buffered, shared, and cached values to determine total available free memory. If there's a lot of memory currently assigned to the cached value, you can run the following command to release some of the cached memory.

sync; echo 3 > /proc/sys/vm/drop_caches

You can see within the image that releasing the memory allowed me to play with another 300mb, which can be valuable when you're memory squeezed.

If there's sufficient memory, then the increase the heap size. I blogged about memory allocation that may be useful.

About the author

Daniel is a Technical Manager with over 10 years of consulting expertise in the Identity and Access Management space.
Daniel has built from scratch this blog as well as technicalconfessions.com
Follow Daniel on twitter @nervouswiggles

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