JR27096: AN APPLICATION THAT CONNECTS TO DB2 WITH SERVER_ENCRYPT AUTHENTI CATION CAN HANG OR TRAP

DB2 Version 9.1 Fix Pack 4a for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 4 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 9.1 Fix Pack 6   for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 6a for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 7a  for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 8  for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 9  for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 10  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

APAR status

• Closed as program error.

Error description

• An application that uses SERVER_ENCRYPT authentication to connec
  t to a DB2 database may hang or trap.   When SERVER_ENCRYPT auth
  entication is used DB2 will use an ICC library to encrypt the us
  erid and password that is sent to the database server.  If the a
  pplication process that is connecting uses too much stack space
  then the ICC library may get a stack overflow which could result
   in a hang or a trap.
  

Local fix

• If possible increase the stack space of the application process
  or do not use SERVER_ENCRYPT authentication.
  

Problem summary

• Users Affected:  Applications that connect to DB2 using SERVER_E
  NCRYPT authentication.
  Problem Description:  An application may trap or hang if it uses
  SERVER_ENCRYPT authentication with DB2 if the stack-space size f
  or the application is low enough, causing a stack overflow.
  

Problem conclusion

• First fixed in DB2 UDB Version 9, Fixpack 4
  

Temporary fix

Comments

APAR Information

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

  JR27094

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

  JR27790

Fix information

• Fixed component name

  DB2 CPE WINDOWS

• Fixed component ID

  5724B5601

Applicable component levels

• R910 PSN

     UP