Which has the higher priority in your organization: Deploying a new database or securing the ones you already have?
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SQL> exec pbsde.shutdown;
BEGIN pbsde.shutdown; END;
ERROR at line 1:
ORA-23321: Pipename may not be null
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 86
ORA-06512: at "SYS.DBMS_PIPE", line 128
ORA-06512: at "SYS.PBREAK", line 259
ORA-06512: at "SYS.PBSDE", line 107
ORA-06512: at line 1