There are four OCI routines that you can use in your external procedures. These require that you have passed context area information to the C function by including WITH CONTEXT in your PL/SQL body. The routines are:
Allocates memory that will automatically de-allocate when control returns to PL/SQL.
Raises a predefined exception by its Oracle error number.
Raises a user-defined exception, including a custom error message.
Allows an external procedure to perform OCI callbacks to the database to execute SQL or PL/SQL.
Refer to Oracle's PL/SQL User's Guide and Reference for detailed documentation and examples of using these routines.
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