By default, the DefMaskRSSym rule contains ExplicitRuleSet and ORACLE_DDM_TEMPDB symbols. You can optionally define additional symbols that use a PL/SQL function to determine whether to mask the stored procedure.

To use the additional symbols, you must create a decision making function that determines whether to mask the stored procedure. The function must return 0 or 1. If the function returns 1, Dynamic Data Masking masks the stored procedure. If the function returns 0, Dynamic Data Masking does not mask the stored procedure.

You can define the following symbols in the DefMaskRSSym rule:

MATCH_FUNCTION

The MATCH_FUNCTION symbol identifies the name of the decision making function.

In the

Symbol Name

field, enter MATCH_FUNCTION. In the

Symbol Value

field, enter the fully qualified name of the PL/SQL decision making function.

MATCH_FUNCTION_PARAMS

The MATCH_FUNCTION_PARAMS symbol defines the number of arguments in the original stored procedure that you want to pass to the decision making function.

In the

Symbol Name

field, enter MATCH_FUNCTION_PARAMS. In the

Symbol Value

field, enter the number of arguments in the original stored procedure that you want to pass to the decision making function. The count starts from the first argument.