A fix is available
APAR status
Closed as program error.
Error description
Client was running large ZDMF migration of DB2 data sets. DB2 detected "broken" pages (incorrect pages on DASD) and gives message DSNI012I Page Logically Broken. Also get DSNB224I Abend04E 00C90101 from DB2. For a Media Manager channel program, ICYNRM turns off bits in the IOSB indicating the channel program had an error. A permanent error is not recognized by MM and the IO request completes with CC=00, even though the DB2 Page did not get written. Later, DB2 gives a variety of page errors trying to read the page. DB2 could give abend04E-00C90101, DSNB224I I/O error, DSNI012I PAGE LOGICALLY BROKEN, and DSNI010I BROKEN PAGE ACCESSED, among others.
Local fix
none yet.
Problem summary
**************************************************************** * USERS AFFECTED: The problem can occur with data sets * * accessed by DB2 release 10. The problem * * can also occur when accessing PDSE data * * sets. The problem exposure is * * exacerbated when the data set resides on a * * zHPF capable device and zDMF is in use to * * move the data set. * **************************************************************** * PROBLEM DESCRIPTION: There are certain situations where * * Media Manager will redrive failed * * channel programs such as a failed * * zHPF channel program or a failed * * RTD CCW with MIDAWs. The Media Manager * * will redrive the failed channel program * * with a different type of channel * * program. * * * * In the case fixed by this APAR, the * * Media Manager had started two channel * * programs in parallel. The first * * channel program fails and drives IOS * * Post Status. The Media Manager * * abnormal end module fails to set a bit * * to indicates that the IO failed. When * * the second IO finishes the Media * * Manager incorrectly concludes that all * * the IO for the request is complete and * * causes the requester to be posted that * * the IO is complete. Therefore the * * failed IO is not redriven and no * * error is surfaced. * **************************************************************** * RECOMMENDATION: * ****************************************************************
Problem conclusion
Media Manager module ICYNRM is modified to set a bit to indicate that the IO has failed. This will allow for the successful redrive of the failed IO.
Temporary fix
********* * HIPER * *********
Comments
APAR Information
APAR number
OA42277
Reported component name
DFSMS MEDIA MAN
Reported component ID
5695DF126
Reported release
D10
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt
Submitted date
2013-05-13
Closed date
2013-05-28
Last modified date
2013-07-02
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UA69274 UA69275 UA69276
Modules/Macros
ICYDIE ICYNRM ICYPGAD
Fix information
Fixed component name
DFSMS MEDIA MAN
Fixed component ID
5695DF126
Applicable component levels
RC10 PSY UA69274
UP13/06/05 P F306
RD10 PSY UA69275
UP13/06/05 P F306
R210 PSY UA69276
UP13/06/05 P F306
Fix is available
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Document Information
Modified date:
02 July 2013