Closing a connection

4D v18

Here we use the OCIHandleFree command to free the handles, and then close the session. When handles are structured hierarchically, closing the parent handle also closes its related handles.

The code below is used to disconnect from the Oracle server. We could also use the OCILogoff command instead.

OCISessionEnd deletes the session.
OCIServerDetach deletes the path to the Oracle server.

After this, we can free the handles one by one, or just free the environment handles, which in turn will release the other handles.

例題

Source code for OCI_DISCONNECT project method:

  //Method: DISCONNECT

  //Method call: DISCONNECT

  //Use: disconnects the currently-connected user

 

 C_LONGINT($status) //return of OCI commands

 

 $status:=OCISessionEnd(svchp;errhp;authp) //deletion of user session

 $status:=OCIServerDetach(srvhp;errhp) //deletion of access to data source

 $status:=OCIHandleFree(envhp) //frees the environment handle

  //which in turn frees up all the other handles