INF: SQL Server Truncates Program Name and Host Name

ID: Q70266

The information in this article applies to:

Microsoft SQL Server Programmer's Toolkit, version 4.2

You cannot specify a host name longer than 10 characters or an application name longer than 16 characters using dbsetlhost() and dbsetlapp(). While these DB-Library macros do allow host names and program names to be 30 characters long, the sysprocesses table defines these columns as:


   hostname  char 10    /* dblib will accept 30 */ 
   program_name  char 16   /* dblib will accept 30 */

SQL Server truncates the strings to fit into these columns without any warning or error messages. Pages 130 and 131 of the "Microsoft SQL Server Programmer's Reference for C" indicate that this is legal. Microsoft is aware of this problem and will be updating the "Microsoft SQL Server Programmer's Reference for C" to reflect this additional information.

NOTE: The column definitions can be seen by performing an sp_help on the sysprocesses table in the master database.
NOTE: This is fixed in the latest PTK documentation.

Additional query words: DB-Library DB-Lib dblib Windows NT


Keywords          : kbprg SSrvDB_Lib SSrvDoc_Err SSrvProg SSrvWinNT 
Version           : 4.2 | 4.2  | 4.2
Platform          : MS-DOS OS/2 WINDOWS 
Issue type        :

Last Reviewed: March 11, 1999