PLS-00201: identifier 'DBMS_OUTPUT.GET_LINES' must be declared

Hi,
 Created a new DB and while putting that in Archive mode, got the following error.
 This is 8.1.7 on Solaris. Anybody have gone through the same?  alter database archivelog;
ORA-06550: line 1, column 7:

PLS-00201: identifier 'DBMS_OUTPUT.GET_LINES' must be declared

ORA-06550: line 1, column 7:

PL/SQL: Statement ignored

ORA-06550: line 1, column 7:

PLS-00201: identifier 'DBMS_OUTPUT.GET_LINES' must be declared

ORA-06550: line 1, column 7:

PL/SQL: Statement ignored

Regards - Chirag

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