Zombie COBK(5 of them, with one main zombie kernel)
We just had 5 zombie kernel on our prod server.
Checked logs for all 5, one of them was the culprit, rest 4 were child processes, all started at 2.55 pm and immediately went into zombie(as the main process crashed), all of them have threads related to just one user sessions.
Main Zombie Error log-
103427/1210WRK:Error Item Wed Feb 7 14:54:52.034896jdeerr.c1359
Fail to fetch Error Text 5512M99 from Data Dictionary.
103427/1210WRK:SCHAMBOM_80000000_P17714 Wed Feb 7 14:55:03.252160dbdrv_log.c196
OS400QL016 - ExecuteSQLRequest: QSQLMSG *LIBL - SQL0335 - Character conversion resulted in substitution characters
103427/1210WRK:SCHAMBOM_80000000_P17714 Wed Feb 7 14:55:03.252296jdb_drvm.c1005
JDB9900401 - Failed to execute db request