oracle cartridge crash with third party software

Hi,

Oracle 12c 64bit, linux (kernel 2.6.18, RHEL), JC 6.2.1, JVM 1.7.0_55, using a third party front end tool.

We are experiencing crashes with the cartridge where simultaneously the GC runs out of headspace, and the CPU maxes out. The errors generated just before crashing are of two forms: either "SEVERE: Error while unmarshalling query structure" or "SEVERE: Invalid counts line". These errors are remedied by restarting the cartridge. We end up doing this about once a week.

We are using this config over several different database instances, and this is the only configuration to show this problem.

We are unable to upgrade the cartridge, os, or jvm to a later version at this time.

Questions:

1 - Based on the internal mechanisms of the oracle cartridge, how likely is it that the error is originating at the client, rather than oracle/cartridge data transfer?

2 - What tactics are suggested to help debug this issue? Currently logging is set to INFO.

Thanks.

Hi John,

Thank you for the report.  Our first guesses are the followings:

-- there might be some problem with the rmi connection or with the network; or there might some antivirus software causing the issues;

-- it can be a memory problem and you could try to give definitely more memory to the jchem server.

Best regards,

Krisztina