Logging query plan for queries

Himanshu Baweja wrote:

when i enable debug_print_plan and
debug_pretty_print...
query plans are written to log file for all
queries....(3 gb of logs in 3 mins) which is of course
diffcult to analyze and consume too much resources....

is it possible to log plans for only the queries whose
duration was more than a particular value or something
like that... (e.g. log_min_duration_statement)....

Sure, see log_min_duration_statement.

-- 
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman@candle.pha.pa.us               |  (610) 359-1001
  +  If your life is a hard drive,     |  13 Roberts Road
  +  Christ can be your backup.        |  Newtown Square, Pennsylvania 19073

--- Bruce Momjian <pgman@candle.pha.pa.us> wrote:

is it possible to log plans for only the queries

whose

duration was more than a particular value or

something

like that... (e.g. log_min_duration_statement)....

Sure, see log_min_duration_statement.

i think bruce u got my question wrong...
log_min_duration_statement will log only the queries
which are longer than a particular value... and if i
turn debug_print_plan.... it will log plans for all
the queries irrespective of the value of
log_min_duration_statement...
that is wht my testing says....

plz point out if i am wrong...
and also... is there any way of logging plans for only
a part of queries which satisfy a particular duration
criteria...

thx
Himanshu

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Himanshu Baweja wrote:

--- Bruce Momjian <pgman@candle.pha.pa.us> wrote:

is it possible to log plans for only the queries

whose

duration was more than a particular value or

something

like that... (e.g. log_min_duration_statement)....

Sure, see log_min_duration_statement.

i think bruce u got my question wrong...
log_min_duration_statement will log only the queries
which are longer than a particular value... and if i
turn debug_print_plan.... it will log plans for all
the queries irrespective of the value of
log_min_duration_statement...
that is wht my testing says....

plz point out if i am wrong...
and also... is there any way of logging plans for only
a part of queries which satisfy a particular duration
criteria...

Oh, log _plans_ for queries over a certain duration --- we don't have
any way to support that, sorry. In fact, at plan time we don't even
know how long it will take for the query to run.

-- 
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman@candle.pha.pa.us               |  (610) 359-1001
  +  If your life is a hard drive,     |  13 Roberts Road
  +  Christ can be your backup.        |  Newtown Square, Pennsylvania 19073