PI26033: ABEND04E RC00E2000C AT DSNHXLTR DSNSVSVB OFFSET0AB6 DUE TO A STORAGE LEAK IN AN ALTER TABLE ALTER COLUMN

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• ABEND04E RC00E2000C AT DSNHXLTR DSNSVSVB OFFSET0AB6 DUE TO A
  STORAGE LEAK IN AN ALTER TABLE ALTER COLUMN
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All DB2 10 and 11 for z/OS users of an       *
  *                 ALTER TABLE ALTER COLUMN or ALTER VIEW       *
  *                 statement referencing a TABLE or VIEW        *
  *                 which has a TRIGGER defined on it.           *
  ****************************************************************
  * PROBLEM DESCRIPTION: An ABEND04E RC00E2000C at location      *
  *                      DSNHXLTR DSNSVSVB OFFSET0AB6 may occur  *
  *                      when a statement satisfies all of the   *
  *                      following list of conditions:           *
  *                                                              *
  *                      1. ALTER TABLE ALTER COLUMN or          *
  *                         ALTER VIEW statement that references *
  *                         a TABLE or VIEW.                     *
  *                      2. A TRIGGER is defined on above TABLE  *
  *                         or VIEW.                             *
  *                                                              *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The following example helps to illustrate the problem.
  
  Step 1. Create objects.
  
  CREATE TABLE T1(
    C1 VARCHAR(8),
    C2 VARCHAR(2)
  )!
  
  CREATE VIEW V1(D1, D2) AS
    SELECT C1, C2 FROM T1!
  
  CREATE TRIGGER TRI1
   AFTER INSERT ON T1
   REFERENCING NEW AS RNEW FOR EACH ROW MODE DB2SQL
   BEGIN ATOMIC
  
     INSERT INTO T1 VALUES(RNEW.C1, RNEW.C2);
  
   END!
  
  CREATE TRIGGER TRI2
   INSTEAD OF INSERT ON V1
   REFERENCING NEW AS RNEW FOR EACH ROW MODE DB2SQL
   BEGIN ATOMIC
  
     INSERT INTO V1 VALUES('AAA', 'BB');
  
   END!
  
  Step 2. Statements which can cause ABEND.
  
  Example#1:
  
  ALTER TABLE T1
   ALTER COLUMN C1 SET DATA TYPE VARCHAR(10)
   ALTER COLUMN C2 SET DATA TYPE VARCHAR(10)!
  
  Example#2:
  
  ALTER VIEW V1 REGENERATE!
  
  DB2 does not free storage properly when process the above ALTER
  statement which may result in the ABEND.
  
  The ABEND occurs because DB2 run out of storage since the
  storage that are allocated when processing the statement
  ALTER TABLE... ALTER COLUMN... SET DATA TYPE... isn't freed.
  

Problem conclusion

• DB2 has been modified correctly to free storage when
  processing ALTER statement.
  
  Additional keywords: SQLALTER SQLVIEW SQLTRIGGER SQLSTORAGE
                       DB2STGLK/K
  

Temporary fix

• *********
  * HIPER *
  *********
  

Comments

APAR Information

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

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

  UI24475 UI24476

Modules/Macros

•    DSNXISUB DSNXOOP
  

Fix information

• Fixed component name

  DB2 OS/390 & Z/

• Fixed component ID

  5740XYR00

Applicable component levels

• RA10 PSY UI24475

     UP15/02/03 P F502 Ž

• RB10 PSY UI24476

     UP15/02/03 P F502 Ž

Fix is available

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