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SI71722 - OSP-DB2MIRROR-MSGSQL0601 REFERENCING SYSCST FOR CREATE TABLE

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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    SI71131   00/00    0000
PRE  5770SS1  V7R4M0    SI70917   00/00    0000
PRE  5770SS1  V7R4M0    SI70250   00/00    0000
PRE  5770SS1  V7R4M0    SI69832   00/00    0000
CO   5770SS1  V7R4M0    SI71721   00/00    0000
CO   5770SS1  V7R4M0    SI71669   00/00    0000
CO   5770SS1  V7R4M0    SI69837   00/00    0000
CO   5770SS1  V7R4M0    SI69616   00/00    0000
CO   5770SS1  V7R4M0    SI69618   00/00    0000
CO   5770SS1  V7R4M0    SI69619   00/00    0000
DIST 5770SS1  V7R4M0    SI71216   00/00    0000



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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 SE72612 :
-----------------------------
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 SE72612 :
--------------------------------
None.


Activation Instructions


None.




Special Instructions


None.


Default Instructions

THIS PTF CAN BE APPLIED IMMEDIATE OR DELAYED.



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
   SI71668      OSP-DB2MIRROR-MSGCPFC908 Replication Criteria List not synch
   SI71219      OSP-DB2MIRROR INCREMENTAL ENHANCEMENT
   SI71117      OSP-DB2MIRROR-MSGCPFC90B REMOVE_REPLICATION_CRITERIA service
   SI70909      OSP-DB2MIRROR-UNPRED SQL procedure SET_DEFAULT_INCLUSION_STA
   SI70473      OSP-DB2MIRROR-MSGCPFC914 Attempt to change replication crite
   SI70473      OSP-DB2MIRROR-MSGCPFC908 INSPECT_REPLICATION_CRITERIA SQL SE
   SI70336      OSP-DB2MIRROR INTERNAL MAINTENANCE
   SI70253      OSP-DB2MIRROR INTERNAL MAINTENANCE
   SI70163      OSP-DB2MIRROR INTERNAL MAINTENANCE
   SI70079      OSP-DB2MIRROR INTERNAL MAINTENANCE
   SI69836      OSP-DB2MIRROR INTERNAL MAINTENANCE
   SI69704      OSP-DB2MIRROR INTERNAL MAINTENANCE
   SI69617      OSP-DB2MIRROR INTERNAL MAINTENANCE
   SI69417      OSP-DB2MIRROR INTERNAL MAINTENANCE
   SI69303      OSP-DB2MIRROR INTERNAL MAINTENANCE

Summary Information

System..............................i
Models..............................
Release.............................V7R4M0
Licensed Program...............5770SS1
APAR Fixed..........................View details for APAR SE72612
Superseded by:......................View fix details for PTF SI75252
Recompile...........................N
Library.............................QSYS
MRI Feature ........................NONE
Cum Level...........................C0121740


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Document Information

Modified date:
05 March 2021