Chapter 1: System Procedures

sp_freedll

Unloads a dynamic link library (DLL) that was previously loaded into XP Server memory to support the execution of an extended stored procedure (ESP).

sp_freedll dll_name

dll_name: is the file name of the DLL being unloaded from XP Server memory.

Unloads the sqlsrvdll.dll DLL:

sp_freedll "sqlsrvdll.dll"

sp_freedll cannot be executed from within a transaction.
sp_freedll cannot free the DLL of a system ESP.
An alternative to unloading a DLL explicitly, using sp_freedll, is to specify that DLLs always be unloaded after the ESP request that invoked them terminates. To do this, set the esp unload dll configuration parameter to 1 or start xpserver with the -u option.
sp_freedll can be used to update an ESP function in a DLL without shutting down XP Server or Adaptive Server.
If you use sp_freedll to unload a DLL that is in use, sp_freedll will succeed, causing the ESP currently using the DLL to fail.

Only a System Administrator can execute sp_freedll.

Values in event and extrainfo columns from the sysaudits table are:

Event	Audit option	Command or access audited	Information in extrainfo
38	exec_procedure	Execution of a procedure	Roles – Current active roles Keywords or options – NULL Previous value – NULL Current value – NULL Other information – All input parameters Proxy information – Original login name, if set proxy in effect