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SI71721 - OSP-DB2MIRROR-MSGSQL0601 REFERENCING SYSCST FOR CREATE TABLE

PTF Cover Letter


PTF ( Program Temporary Fixes ) Cover letter


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Abstract

OSP-DB2MIRROR-MSGSQL0601 REFERENCING SYSCST FOR CREATE TABLE


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED           PTF/FIX  LEVEL

TYPE PROGRAM  RELEASE   NUMBER   MIN/MAX  OPTION
---- -------- --------- -------  -------  ------
PRE  5770SS1  V7R4M0    SI69832   00/00    0000
CO   5770SS1  V7R4M0    SI71744   00/00    0000
CO   5770SS1  V7R4M0    SI71720   00/00    0000
CO   5770SS1  V7R4M0    SI71722   00/00    0000
CO   5770SS1  V7R4M0    SI71592   00/00    0000
CO   5770SS1  V7R4M0    SI71743   00/00    0000
CO   5770SS1  V7R4M0    SI71671   00/00    0000
CO   5770SS1  V7R4M0    SI71672   00/00    0000
CO   5770SS1  V7R4M0    SI71219   00/00    0000
CO   5770SS1  V7R4M0    SI70457   00/00    0000
CO   5770SS1  V7R4M0    SI70077   00/00    0000
CO   5770SS1  V7R4M0    SI69418   00/00    0000



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-------
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APAR Error Description / Circumvention

-----------------------------------------------
An SQL CREATE TABLE operation with a primary key constraint
fails with message SQL0601 (SYSCST already exists in schema)
from the secondary node when the schema for the CREATE TABLE is
still being synchronized after being included in mirroring with
a change to the Replication Criteria List (RCL).

CORRECTION FOR APAR SE72574 :
-----------------------------
While the Replication Criteria List was processing a new rule to
mirror an existing schema, it was not including any of the SQL
catalog tables that get generated for an SQL schema as an object
that must be mirrored prior to any additional operations are
allowed against this newly mirrored schema. This exposed a
window where multiple operations could cause the system to
regenerate the same catalog tables and see an SQL0601 error
message.

The RCL will be changed to classify SQL catalog tables as
"container objects" that must be synchronized prior to allowing
any new operations against the newly mirrored schema.

To prevent the problem from occurring, the PTF should be applied
to systems with Db2 Mirror configured. For a complete fix, the
PTF must be applied to both nodes of a Db2 Mirror pair. It is
not necessary to apply the PTF to both nodes of the pair at the
same time, but the problem could occur on a node that does not
have the PTF applied.

CIRCUMVENTION FOR APAR SE72574 :
--------------------------------
None.


Activation Instructions


None.




Special Instructions


None.


Default Instructions

THIS IS A DELAYED PTF TO BE APPLIED AT IPL TIME.



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
   SI71471      OSP-DB2MIRROR-T/MRDBRCLIND-MSGMCH2001 to MRDBRCLIND when usi
   SI71471      OSP-DB2MIRROR INCREMENTAL ENHANCEMENT
   SI71218      OSP-DB2MIRROR INCREMENTAL ENHANCEMENT
   SI71218      OSP-DB2MIRROR-UNPRED File updates not replicated
   SI70956      OSP-DB2MIRROR-T/MRDBRCLIND-MSGMCH2002 during job termination
   SI70703      OSP-DB2MIRROR-PERFM Parallel degree value used while changin
   SI70460      OSP-DB2MIRROR-UNPRED Attempt to RESUME replication of databa
   SI70251      OSP-DB2MIRROR INTERNAL MAINTENANCE
   SI70078      OSP-DB2MIRROR INTERNAL MAINTENANCE
   SI69416      OSP-DB2MIRROR INTERNAL MAINTENANCE
   SI69298      OSP-DB2MIRROR INCREMENTAL ENHANCEMENT
   SI69298      OSP-DB2MIRROR INTERNAL MAINTENANCE

Summary Information

System..............................i
Models..............................
Release.............................V7R4M0
Licensed Program...............5770SS1
APAR Fixed..........................View details for APAR SE72574
Superseded by:......................View fix details for PTF SI75251
Recompile...........................N
Library.............................QSYS
MRI Feature ........................NONE
Cum Level...........................C0121740


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Document Information

Modified date:
05 March 2021