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- Original_To: JNET%"ibm-main@ricevm1"
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- Message-ID: <IBM-MAIN%92111912541608@RICEVM1.RICE.EDU>
- Newsgroups: bit.listserv.ibm-main
- Date: Thu, 19 Nov 1992 13:43:00 EST
- Sender: IBM Mainframe Discussion list <IBM-MAIN@RICEVM1.BITNET>
- From: "David F. Juraschek" <JURASCHEK@GMUVAX.BITNET>
- Subject: DFHSM Recalls & Batch
- Lines: 44
-
- DFHSM 2.6 MVS/ESA JES2 4.2.2 DFP 3.3.1
- DFHSM does space management on a number of our non-SMS volumes.
- A batch job runs which attempts to delete a DSN in the first step via
- IEFBR14. The DSN happens to have been migrated sometime in the past by
- DFHSM's space management activities.
- There is no console request to mount any ML2 tape, and there is no delay
- in the IEFBR14 step which ends RC=0.
- (It would appear that the DSN has therefore been deleted.)
- A later step attempts to create the DSN anew. This step abends for one of
- two reasons:
- The DSN is still cataloged (but physically is non-existant)
- or The DSN is not cataloged (but physically exists).
-
- This phenonema has occured several times with differing job streams, but
- the scenario is the same. The first step attempts to delete a migrated
- DSN and ends RC=0 with no console indication that a physical recall has
- actually occured. A later step (may be the next job step) blows because
- for some reason it can't create this DSN anew. No other job stream or
- human activity creates these DSN's. Post abend inspection indicates an
- uncataloged DSN or a cataloged DSN with no physical entity. The obvious
- problem is that somehow there is a syncronization problem with DFHSM and
- a delete via IEFBR14. (The IEFBR14 shouldn't really end RC=14 until the
- DSN is physically removed and the catalog entry deleted, should it not?)
-
- We have a number of pre-DFHSM job streams that use IEFBR14 and
- DISP=(MOD,DELETE,DELETE) to delete old copies of files that are re-created
- in the same job stream. It is unacceptable to rewrite these job streams
- to also include a TSO batch step that issued HDELETEs for all these same
- DSNs.
-
- I don't have access to IBMLINK (please no discussions about that). Is
- this phenonema a known DFHSM "feature". Is there a work-around? (The
- same thing used to happen occasionally under DFHSM 2.4 and DFHSM 2.5.
- The problem is getting worse now as DFHSM is doing significantly more
- in the area of space management than it used to have to do in those
- days.)
-
- Any ideas?
-
- Thanks.
- -Dave Juraschek
- IBM Systems, George Mason University
-
- (Do I maybe have some obscure SETSYS option wrong in DFHSM?)
-