BUG: SQLFreeStmt After SQLExecute/SQLExecDirect May Cause GPF

 Last reviewed: September 9, 1996
Article ID: Q113510
The information in this article applies to:
  • Microsoft Open Database Connectivity, version 1.0

BUG# ODBCDBASE: 2062 (1.01.1928)

SYMPTOMS

On certain Btrieve Tables, the following sequence of operations (or equivalent) can generate a general protection fault (GP fault) in BTRV110.DLL:

  1. Allocate a Env, Hdbc, and Stmt handle using SQLAllocEnv, SQLAllocConnect, and SQLAllocStmt respectively or an equivalent sequence of calls to prepare to execute a SQL statement.

  2. Execute SQLExecDirect or SQLExecute to execute a selection query (select * from <tablename>).

  3. A subsequent call to SQLFreeStmt with fOption = SQL_CLOSE.

The exact message of the error generated is: 

   <Application name> caused a general protection fault in module
   BTRV110.DLL at 0011:0B7A.
NOTE: The conditions under which this can happen are highly dependent on the combination of specific data in certain tables and the structure of the ddf files.

WORKAROUND

Try copying the data out and moving into another table. Run your query against the new table.

STATUS

Microsoft has confirmed this to be a problem in ODBC Btrieve Driver version 1.01.1928. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

KBCategory: kbusage
KBSubcategory:

Additional reference words: 1.01.1928 DDD VB Access ODBC



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Last reviewed: September 9, 1996
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