IT19312: REMARKS ON VIEW COLUMNS NOT RETAINED AFTER CHANGES TO BASE TABLE.

DB2 Version 11.1 Mod 2 Fix Pack 2 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod2 Fix Pack2 iFix001 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod2 Fix Pack2 iFix002 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 3 Fix Pack 3 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod3 Fix Pack3 iFix001 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod3 Fix Pack3 iFix002 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod4 Fix Pack4 iFix001 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 4 Fix Pack 4 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 5 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 4 Fix Pack 7 for Linux, UNIX, and Windows

APAR status

• Closed as program error.

Error description

• Remarks on view columns not retained after changes to base
  table.
  
  When we alter underline table, the Remarks on the Columns of our
  views were lost
  e.g.
  $ db2 "create table t1 (col1 varchar(10))"
  DB20000I The SQL command completed successfully.
  
  $ db2 "create view v1 as select col1 from t1"
  DB20000I The SQL command completed successfully.
  
  $ db2 "comment on column jbms.v1.col1 is 'Hello world'"
  DB20000I The SQL command completed successfully.
  
  $ db2 "select char(remarks,30) from syscat.columns where tabname
  = 'V1'"
  1
  ------------------------------
  Hello world
  1 record(s) selected.
  
  
  $ db2 "alter table t1
  alter column col1 set data type varchar(20)"
  DB20000I The SQL command completed successfully.
  $ db2 "select * from v1"
  COL1
  --------------------
  0 record(s) selected.
  
  
  $ db2 "select char(remarks,30)  from syscat.columns where
  tabname = 'V1'"
  1
  ------------------------------
  -
  1 record(s) selected.
  
  So Alter statement on Base table deleting the Remark on
  view.column after "select * from view" (refreshing view)
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * ALL                                                          *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to DB2 11.1 Mod 2 Fix Pack 2 or higher               *
  ****************************************************************
  

Problem conclusion

• First fixed in DB2 11.1 Mod 2 Fix Pack 2
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

  IT15055

• 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

     UP