To properly exit Client-Library, wait until all asynchronous operations are complete, then call ct_exit. If an asynchronous operation is in progress when ct_exit is called, the routine returns CS_FAIL and does not exit Client-Library properly, even when CS_FORCE_EXIT is used.
Client-Library fully supports asynchronous operations on your UNIX platform. For more information, see “Asynchronous Programming” in the Open Client Client-Library/C Reference Manual.
