Is there any way to flush output from PL/SQL in Oracle?

Question

I have an SQL script that is called from within a shell script and takes a long time to run. It currently contains dbms_output.put_line statements at various po

Answer 1

the buffer of DBMS_OUTPUT is read when the procedure DBMS_OUTPUT.get_line is called. If your client application is SQL*Plus, it means it will only get flushed once the procedure finishes.

You can apply the method described in this SO to write the DBMS_OUTPUT buffer to a file.