Solution : https://service.sap.com/sap/support/notes/397906 (SAP Service marketplace login required)
Key words : 
additional key words cpe3021 cpfb752 cpe3455, iserver releases v4r4, high availability solutions, solution patch lib_dbsl 0, symptom db switchover, db switchover refers, sap application server, database server fails, db switchover, database server
Related Notes : 
       
| 392165 | iSeries: Known problems under V5R1M0/V5R2M0 |