You cannot execute rules due to a severe error

If you cannot execute rules due to a severe error, take the actions described here.

Symptoms

If your COBOL application receives a completion code of 12 and a reason code of 5000, then something unexpected occurred during rule execution. This is confirmed by the HBRA-RESPONSE-MESSAGE of

GBRZP6004E An unexpected runtime error occurred during rule
execution

Resolving the problem

Check the zRule Execution Server for z/OS logs to determine the cause of the error. If the "Java™ heap space" message is also seen in the exception, and the javacore dump contains this message:

1TISIGINFO Dump Event "systhrow" (00040000) Detail "java/lang/OutOfMemoryError" "Java heap space" received

User response: Ensure that JAVA_OPTIONS contains a -Xmx value large enough for the ruleset to load and execute.