IT39103: .NET CORE THROWS SYSTEM.ACCESSVIOLATIONEXCEPTION: ATTEMPTED TO READ OR WRITE PROTECTED MEMORY

APAR status

• Closed as program error.

Error description

• Using the Informix .NET Core provider with a simple application
  that performs open, close and dispose in a loop will eventually
  throw
  a "System.AccessViolationException: Attempted to read or write
  protected memory" exception.
  
  This is often an indication that other memory is corrupt.
  Fatal error. Repeats 2 times:
  --------------------------------
  Repeat 2 times:
     at Interop+Odbc.SQLDisconnect(IntPtr)
  --------------------------------
     at Interop+Odbc.SQLDisconnect(IntPtr)
  
  Problem does not occur using the regular Informix .NET provider.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Users of Informix Client SDK prior to version 4.50.FC8.      *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to Informix Client SDK 4.50.FC8.                     *
  ****************************************************************
  

Problem conclusion

• Fixed in Informix Client SDK 4.50.FC8.
  

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

  IBM CSDK

• Fixed component ID

  5724C2381

Applicable component levels