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Re^2: Parallel::ForkManager using up Resources?

by guice (Scribe)
on Mar 29, 2005 at 20:52 UTC ( #443257=note: print w/ replies, xml ) Need Help??


in reply to Re: Parallel::ForkManager using up Resources?
in thread Parallel::ForkManager eating up Resources?

Now I'm at a loss, how did you successfully create a pool of DBI handles with multiple children? I have a pool set, but as soon as my first child ends, DBI tries to clean itself up and kills all my other DBI handles with "end-of-file on communication channel during global destruction" error.

My code (trimmed down):

my %pool; my %dbhs; $MAX = 5; $pm->run_on_start(\&_child_start); $pm->run_on_finish(\&_child_finish); my @dbhs = start_dbh(); %pool = map { $_ => 1 } @dbhs; foreach $i ( @is ) { ($next) = grep ( defined($pool{$_}), @dbhs ); $pid = $pm->start($next) and next; $sys->set_dbh($dbhs{$next}); sleep(rand(10)); $pm->finish; } sub start_dbh() { %dbhs = map { $_ => DBI::Connect(); } 0 .. $MAX; return keys %dbhs; } Sys::set_dbh() { my $this = shift; $this->{'_dbh-child'} = shift; } sub _child_start() { my ($pid, $ident) = @_; delete($pool{$ident}); print "**** STARTED: child with PID $pid"; } sub _child_finish(){ my ($pid, $exit, $ident) = @_; print "**** FINISHED: child with PID $pid exit cide $exit"; $pool{$ident} = 1; }

And as soon as the first child dies all my DBI handlers spew out: DBD::Oracle::db DESTROY failed: ORA-03113: end-of-file on communication channel (DBD Error: OCISessionEnd) during global destruction.

-- philip
We put the 'K' in kwality!


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