I have a ERP 6.0 production system on V5R6M0.
Kernel patch level is 242. There are 6 instances on the same host.
We changed system's DBSL driver from XDA to direct driver XDN according to the Note 1257635 - DB4 DBSL Direct Drive for DB2 for IBM i (DB2 400).
After a while some jobs (named like CL_...==CP, eg:CL_SWF_CNT_FACTORY_SHMEM) got stucked in the system. Some updates about USR02 table got stucked. These jobs occupied all WPs. Response time increased heaviliy. We changed XDN to XDA back again and system ran as it was before.
For example, when try to see the details of one of SM50 records, system started running CL_AS4_API====================CP report and it did not finish.
Can there be any reason for these stucked jobs?
Could you help, please?