DBMS_OUTPUT

DBMS_OUTPUT.DISABLE;
DBMS_OUTPUT.ENABLE (
buffer_size IN INTEGER DEFAULT 20000);

DBMS_OUTPUT.GET_LINE (
line OUT VARCHAR2,
status OUT INTEGER);

DBMS_OUTPUT.GET_LINES (
lines OUT DBMS_OUTPUT.CHARARR,
numlines IN OUT INTEGER);

DBMS_OUTPUT.GET_LINES (
lines OUT DBMS_OUTPUT.DBMSOUTPUT_LINESARRAY,
numlines IN OUT INTEGER);