Resolution:
Data Object Broker (DOB) R5.0 abends S0C4

Environment:
============
o All R5.0 z/OS Data Object Brokers with attached SLK servers..

Symptoms:
=========
Data Object Broker (DOB) abends  S0C4, S0Cx.

Cause:
======
Using SLK service connected via TCP/IP to a z/OS DOB, the register savearea chain may be overlaid causing S0Cx types of abends. The DOB may terminate or become unusable. R14 will point to an area where the PSW is usually pointing as well (plus a few bytes). Other registers may contain garbage.


Resolution:
===========
Apply fixes from latest hotfix level, currently level 9.

N.B. The specific fix is -
AP12983 /*HFX07 Increase comm savarea stack 5 to 8 lvls for SLK */

Data Object Broker R5.0 abends S0C4