PolarDB O Edition support the following DBMS_SESSION.SET_ROLE procedure:
The implementation of DBMS_AQ in PolarDB databases compatible with Oracle is a partial implementation when compared with native Oracle. Only DBMS_SESSION.SET_ROLE is supported.
The SET_ROLE procedure sets the current session user to the role specified in role_cmd. After the current session invokes the SET_ROLE procedure, the session uses the permissions assigned to the specified role. The procedure has the following signature:
The SET_ROLE procedure appends the value specified for role_cmd to the SET ROLE statement, and then invokes the statement.
|role_cmd||Specifies a role name in the form of a string value.|
You can run the SET ROLE command to call the SET_ROLE procedure and set the identity of the current session user to manager. The following example shows this call: