PM78895: CHANGE DEFAULT VALUE FOR A NULLABLE COLUMN, DROP/RECREATE WAS USED INSTEAD OF ALTER

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Changed the default value for a nullable column, ALTER TABLE
  ALTER COLUMN  should have been used, however, drop/recreate was
  used by Admin.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of the DB2 Object Comparison Tool for  *
  *                 z/OS who alter the default value for a       *
  *                 column and it is the only update for that    *
  *                 column.                                      *
  ****************************************************************
  * PROBLEM DESCRIPTION: Object Compare dropped and recreated    *
  *                      a table instead of generating the       *
  *                      ALTER TABLE ALTER COLUMN colname        *
  *                      SET default clause when altering        *
  *                      the default value and its the only      *
  *                      change to that column.                  *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Object Compare dropped and recreated a table instead of
  generating the ALTER TABLE ALTER COLUMN colname SET default
  clause.
  

Problem conclusion

• Problem has been resolved.
  
  A new informational message ADB7145I is generated if the table
  can not be altered due to DB2 restrictions:
  
  ADB7145I  Column column_name cannot be altered by the
   ALTER TABLE ALTER COLUMN SET WITH DEFAULT statement.
   Reason code reason_code.
  
  Explanation:
  The table can not be altered due to DB2 restrictions. The
  table will be dropped and re-created. See the following list
  for an explanation of the reason code:
  
  1. The table must not be referenced by a view or a
     Materialized Query Table (MQT).
  
  2. For LOB columns, only the default for inline LOB columns
     can be changed. The new default length can not be greater
     than the inline length.
  
  System action:
  Processing continues.
  
  User response:
  No action is required.
  

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:

Modules/Macros

• ADB2CMP  ADB2CMT  ADB7000
  

Fix information

• Fixed component name

  DB2 ADMIN TOOL

• Fixed component ID

  568851500

Applicable component levels

• RA10 PSY UK94520

     UP13/05/25 P F305

• RA20 PSY UK94521

     UP13/05/25 P F305

Fix is available

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