JR27842: TYPE 4 UNIVERSAL JCC DRIVER RETURNS WRONG VALUE FOR DATABASE METADATA FUNCTIONS AGAINST ISERIES.

DB2 Version 9.5 Fix Pack 3b for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 1  for Linux, UNIX, and Windows
DB2 Version 9.1 Fix Pack 7  for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 5   for Linux, UNIX and Windows
DB2 Version 9.5 Fix Pack 2a for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 2  for Linux, UNIX, and Windows
DB2 Version 9.1 Fix Pack 6   for Linux, UNIX and Windows
DB2 Version 9.5 Fix Pack 4  for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 3a for Linux, UNIX, and Windows
DB2 Version 9.1 Fix Pack 6a for Linux, UNIX and Windows
DB2 Version 9.5 Fix Pack 3 for Linux, UNIX, and Windows
DB2 Version 9.1 Fix Pack 7a  for Linux, UNIX and Windows
DB2 Version 9.5 Fix Pack 4a for Linux, UNIX, and Windows
DB2 Version 9.1 Fix Pack 8  for Linux, UNIX and Windows
DB2 Version 9.5 Fix Pack 5 for Linux, UNIX, and Windows
DB2 Version 9.1 Fix Pack 9  for Linux, UNIX and Windows
DB2 Version 9.5 Fix Pack 6a for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.1 Fix Pack 10  for Linux, UNIX and Windows
DB2 Version 9.5 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.1 Fix Pack 11  for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 12  for Linux, UNIX and Windows
DB2 Version 9.5 Fix Pack 10 for Linux, UNIX, and Windows

APAR status

• Closed as program error.

Error description

• DatabaseMetaData class methods for quoted identifers,
  such as storesLowerCaseQuotedIdentifiers,
  SupportsMixedCaseQuotedIdentifiers(),
  StoresMixedCaseQuotedIdentifiers() returns True if called
  against DB2 database on iseries. But it should return False
  because,
  
  From the JDBC definition of storesMixedCaseQuotedIdentifiers(),
  the value returned will be true only if the database
  
  1) treats mixed case quoted SQL identifiers as case insensitive.
  2) and stores them in mixed case.
  
  Therefore,
  storesMixedCaseQuotedIdentifiers() should return false since DB2
  doesn't treat them as case insensitive.
  The result should be the same for other metadata functions too.
  
  The same functions return False against DB2 on Luw and ZOS.
  

Local fix

Problem summary

• Users affected:
       All users using Type 4 JCC driver connecting to iseries.
  
  Problem description:
           Type 4 Jcc driver connecting to DB2 on iseries returns
  wrong value for metadata functions.
  
  Problem Summary:
   DatabaseMetaData class methods for quoted identifers,
  such as storesLowerCaseQuotedIdentifiers,
  SupportsMixedCaseQuotedIdentifiers(),
  StoresMixedCaseQuotedIdentifiers() returns True if called
  against DB2 database on iseries. But it should return False
  because,
  
  From the JDBC definition of storesMixedCaseQuotedIdentifiers(),
  the value returned will be true only if the database
  
  1) treats mixed case quoted SQL identifiers as case insensitive.
  2) and stores them in mixed case.
  
  Therefore,
  storesMixedCaseQuotedIdentifiers() should return false since DB2
  doesn't treat them as case insensitive.
  The result should be the same for other metadata functions too.
  
  The same functions return False against DB2 on Luw and ZOS.
  

Problem conclusion

• Problem first fixed in V9.5 FP2.
  

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 CEE WINDOWS

• Fixed component ID

  5765F3001

Applicable component levels

• R950 PSY

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