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Don Burleson Blog 







Oracle java.lang.OutOfMemoryError Tips

Oracle Database Tips by Donald BurlesonFebruary 12, 2015

Question:  When installing Oracle it stops at 91% and I get the java.lang.OutOfMemory error.  I see this message in my installation log file:

java.lang.OutOfMemoryError <<no stack trace available>>

Please advise on how to increase the RAM for Java to remove the error.

Answer:  In Oracle, the java.lang.OutOfMemoryError occurs when the Java Runtime Environment (JRE) does not have enough RAM allocated.  To increase the RAM for the Oracle JRE, change the file install/oraparam.ini and increase the Java Memory:


You can also increase Java RAM memory at the command line:

java -Xms<size>

java -Xms=32m -Xmx=256m

If you get the java.lang.OutOfMemoryError or the related javax.ejb.EJBException: java.lang.OutOfMemoryError: Java heap space in JDeveloper, you can increase the RAM like this:

1. Right Click on "Project node" in the JDeveloper application navigator (the .jpr file) .
2. Select "Project properties" from the project node menu.
3. Select "Run/Debug".
4.  If you have the "Default" run configuration, select it and click the "Edit" button
5. In the java options text box,  add -Xms512M -XMs-512M.
6. Click the "OK" button

For testing the added RAM, go back to the aborted JDeveloper screen , and re-run the code.

If the java.lang.OutOfMemoryError persists, step-up the value in -Xms/-Xmx until you have enough RAM to complete the operation.



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