Example
Below is a sample profile session and queries for data analysis.
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Preparation — create table and routines that will be analyzed
create table tab ( id integer not null, val integer not null ); set term !; create or alter function mult(p1 integer, p2 integer) returns integer as begin return p1 * p2; end! create or alter procedure ins as declare n integer = 1; begin while (n <= 1000) do begin if (mod(n, 2) = 1) then insert into tab values (:n, mult(:n, 2)); n = n + 1; end end! set term ;!
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Start profiling
select rdb$profiler.start_session('Profile Session 1') from rdb$database; set term !; execute block as begin execute procedure ins; delete from tab; end! set term ;! execute procedure rdb$profiler.finish_session(true); execute procedure ins; select rdb$profiler.start_session('Profile Session 2') from rdb$database; select mod(id, 5), sum(val) from tab where id <= 50 group by mod(id, 5) order by sum(val); execute procedure rdb$profiler.finish_session(true);
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Data analysis
set transaction read committed; select * from plg$prof_sessions; select * from plg$prof_psql_stats_view; select * from plg$prof_record_source_stats_view; select preq.* from plg$prof_requests preq join plg$prof_sessions pses on pses.profile_id = preq.profile_id and pses.description = 'Profile Session 1'; select pstat.* from plg$prof_psql_stats pstat join plg$prof_sessions pses on pses.profile_id = pstat.profile_id and pses.description = 'Profile Session 1' order by pstat.profile_id, pstat.request_id, pstat.line_num, pstat.column_num; select pstat.* from plg$prof_record_source_stats pstat join plg$prof_sessions pses on pses.profile_id = pstat.profile_id and pses.description = 'Profile Session 2' order by pstat.profile_id, pstat.request_id, pstat.cursor_id, pstat.record_source_id;