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Today, I wrote a stored procedure that needs to copy the data of the tables under other users to the target table through dblink. As a result, when I visit the tables of other systems, there are always problems in the stored procedure and the answer is found in Stack Overflow.

In stored procedures, functions, and definers-rights packages, roles (such as SELECT_CATALOG_ROLE) are disabled. Therefore, such a PL/SQL program can only fetch metadata for objects in its own schema. If you want to write a PL/SQL program that fetches metadata for objects in a different schema (based on the invoker's possession of SELECT_CATALOG_ROLE), you must make the program invokers-rights.

To do this, you must add authid to your procedure.

Create procedure tests authid CURRENT_USER is l_foo clob;beginselectregexp_replace (dbms_metadata.get_ddl ('USER',' SCOTT', null) | | dbms_metadata.GET_GRANTED_DDL ('SYSTEM_GRANT',' SCOTT') | | dbms_metadata.GET_GRANTED_DDL ('OBJECT_GRANT',' SCOTT') | | dbms_metadata.GET_GRANTED_DDL ('ROLE_GRANT',' SCOTT'),'"| | chr (10),'";'| chr (10) into l_foo from dual End;/SQL > EXEC tests PL/SQL procedure successfully completed

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