OA48901: IEC999I ISSUED WHEN PREVIOUS DCB IS NOT AVAILABLE. THIS RESULTS IN CLOSE NOT BEING ISSUED ON SUBSEQUENT DCBS.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• After ABENDx37 there can be IEC999I message(s) and ABENDD78
  or ABEND0C4 in DIV. When cleanup is attempted IFG0TC0A runs the
  TCB/DEB chain to Close any OPEN DCBs. If the DCBs were part of a
  PDSE module, which is under DIV control the resource manager is
  called prior to IFG0TC0A, so the DCB storage has been zeroed.
  IFG999I messages with a -1 after the DEB address indicating
  the DCB is unavailable. If a subsequent DEB is to processed
  it is possible that a CLOSE will not be issued if the DCBOVLAY
  bit has been set. This will result in PDSE(s) not being
  properly Closed and ABENDD78 or ABEND0C4 in DIV.
  

Local fix

• n/a
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All.                                         *
  ****************************************************************
  * PROBLEM DESCRIPTION: ABENDD78 or ABEND0C4 in DIV.            *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  At task termination, IFG0TC0A runs the TCB DEB chain and
  issues SVC20 CLOSE against the DCB/ACB pointed to by
  each DEB. One of these DEBs points to a PDSE DCB page loaded
  into DIV storage. The DIV resource manager gets control prior
  to task close freemains and zeros the DCB storage. This results
  in IEC999I...DEBADDR-1 indicating the DCB storage was
  freemained. IFG0TC0A incorrectly does not issue CLOSE
  against the DCBs pointed to by the subsequent DEBs
  in the chain. If one of these DCBs is for a PDSE paged loaded
  into DIV this subsequently leads to abendd78 or abend0c4
  in DIV.
  

Problem conclusion

• In the above scenario Task Close will continue to issue CLOSE
  against the DCBs pointed to by subsequent DEBs in the chain.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  UA79399 UA79400

Modules/Macros

• IFG0TC0A
  

Fix information

• Fixed component name

  DATA MGMT SUPPO

• Fixed component ID

  5695DF107

Applicable component levels

• R210 PSY UA79399

     UP15/12/16 P F512

• R220 PSY UA79400

     UP15/12/16 P F512

Fix is available

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