MUF restart S0C4 DBMFSPR ***DBRST WAIT DB MISC

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Issue/Introduction

CA Datacom Version 15.0 MUF abended at startup with 
DBMUFPR S0C4 at 28E4A686 LMOD DBMFSPR CSECT DBMFSPR +006686

The TASK INFORMATION portion of the resultant MUF EOJ report showed an entry with "WAIT DB MISC":
 ***DBRST        274    :04           OPEN         WAIT DB MISC 
 

What caused MUF restart S0C4 DBMFSPR with EOJ  report showing ***DBRST WAIT DB MISC?

Environment

z/OS

Resolution

CA Datacom Version 15.0 HIPER RO92484 will address this problem as well as the RESTART hang "WAIT DB MISC" problem as documented that is seen when issue the STATUS console command. For example:

DB01311I - STATUS                                                           
DB01327I - MULTI-USER ENABLING, TASKS - ATTACHED-----0, AVAILABLE-----0     
DB01328I - TIME   I/O  JOBNAME R-UNIT TASK CMD-DBID-TBL    SEQ STATUS       
DB01329I - 29:40       ***DBRST   124      OPEN         571150 WAIT DB MISC  
                                                                            
 

Additional Information

Refer to  CA Datacom Core - 15.1 section on "COMM EOJ - EOJ_OK"  subsection "MUF EOJ Report Logging"
https://docops.ca.com/ca-datacom/15-1/en/reference/dbutlty-reference/utility-function-summary/comm-communicate-with-muf/comm-eoj-eoj_ok-end-muf-processing#COMMEOJ-EOJ_OK(EndMUFProcessing)-MUFEOJReportLoggingSectionChanges

Task Information

If the MUF fails with an abnormal EOJ, a page showing task information follows the previously shown other information report. The task information contains status information similar to other status displays, but the task information report is specifically targeted at helping to debug the abnormal failure. Fields unique to the task information report are described after the report example that follows.

                                             TASK INFORMATION
 
JOBNAME  RUNIT TASK   TIME  I/O B-RF CMD-DBID-TBL STATUS          TSN    LOGR OWNR/Y VALUE/RID
 
JOB0040  79588    1    :04           UPDAT 997C02 PENDING
JOB0040  79588    2    :04         1 RDUNX 997F01 WAIT BFR LOCK D DBDB0771 83
JOB0040  79588    3    :04    1    2 RDUKG 997F02 WAIT BFR LOCK D DBDB076C101
JOB0040           4    :04           RDUNX 997F03 PENDING

This page of the report provides the following information:

• B-RF
  Displays the current buffer references.
• LOGR
  Displays the number of log records executed by the task since the last close or commit occurred.