IT28001: "ALTER SEQUENCE SEQUANCE_NAME RESTART WITH" - STATEMENT IN DB2LOOK OUTPUT HAS INCORRECT VALUES

Db2 Version 11.1 Mod 4 Fix Pack 5 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 4 Fix Pack 6 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 4 Fix Pack 6 for Linux, UNIX, and Windows

APAR status

• Closed as program error.

Error description

• DDL for sequence (db2look.mimic_sequence.sql)
  
  CREATE SEQUENCE "MYSEQ" AS BIGINT
          MINVALUE 100000000000000000 MAXVALUE 199999999999999999
          START WITH 100000000000000000 INCREMENT BY 1
          NO CACHE CYCLE NO ORDER;
  
  ALTER SEQUENCE "MYSEQ" RESTART WITH
  100000000000522496;
  
  
  
  Steps to reproduce this problem :
  
  db2 "ALTER SEQUENCE "MYSEQ" RESTART WITH
  10000000000555555"
  
  $ db2look -d sample -e | grep 'ALTER SEQUENCE'
  ..
  ALTER SEQUENCE  "MYSEQ" RESTART WITH
  10000000000555556;
  ---
  $ db2 "ALTER SEQUENCE "MYSEQ" RESTART WITH
  10000000000333333"
  
  
  $ db2look -d sample -e | grep 'ALTER SEQUENCE'
  
  ALTER SEQUENCE "MYSEQ" RESTART WITH
  10000000000333332;
  ..
  
  Db2look is not handling DECIMAL(31,0) datatype properly. When
  the sequence is too large, calculations are done incorrectly,
  and precision is lost.
  

Local fix

• Use sequences up to 15 digits max.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * ALL                                                          *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to Db2 11.1 Mod 4 Fixpack 5 or higher                *
  ****************************************************************
  

Problem conclusion

• First fixed in Db2 11.1 Mod 4 Fixpack 5
  

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:

Fix information

• Fixed component name

  DB2 FOR LUW

• Fixed component ID

  DB2FORLUW

Applicable component levels

• RB10 PSN

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