E1: KER: Call Object Kernel Instability and Many Dump Files Created after Tools 9.2.7.x (Doc ID 2945597.1)

Last updated on SEPTEMBER 19, 2023

Applies to:

Symptoms

9.2
9.2.7.1

Upgraded from 9.2.4.1 32bit to Tools 9.2.7.1 64bit

Since then, have noticed the following instability behavior, where at a certain point in time, Call Object Kernel (COK) processes would generate dozens of dump files having the same content. COK shows up as zombie in Server Manager.
Saw memory usage increasing and performance degrading, and causing slowness and freezing on the Web HTML instances as well, and user web client sessions becoming very sluggish, or freezing.

After restart, issue went away but will appear after several hours then starting to manifest themselves, and having more and more dmp files as time goes by.

In the Ent Server log directory, end up having dozens or hundreds of dump files for the same process ID
E.g.:
jde_7156_1188_202332915213_118_dmp.log
jde_7156_1188_202332915224_127_dmp.log
jde_7156_1188_202332915625_24_dmp.log
jde_7156_1188_202332915728_28_dmp.log
jde_7156_1188_202332915745_29_dmp.log
jde_7156_1188_202332915757_30_dmp.log

The contents of the files are all the same: (Except for the time stamp the dump was taken)

Changes

 Upgraded to 9.2.7.1 from 9.2.4.1

Cause

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