CBR7550I OAM connection to DB2 via CAF failed.

Explanation
 The attempt to establish the OAM address space
as a user of DB2® via Call Attach
Facility, CAF, failed for some reason other than DB2 unavailability.

System action
 Retry request. If retry fails, stop OAM.

Source
 Object Access Method (OAM)

Routing Code
 2

Descriptor Code
 4