Which Oracle supplied package can you use to output values and messages from database triggers, stored procedures and functions within SQL*Plus?

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Which Oracle supplied package can you use to output values and messages from database triggers, stored procedures and functions within SQL*Plus?

Which Oracle supplied package can you use to output values and messages from database triggers, stored procedures and functions within SQL*Plus?
1. DBMS_DISPLAY 2. DBMS_OUTPUT 3. DBMS_LIST 4. DBMS_DESCRIBE

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