I use MySQL with the DBI Module for my perl programming database connections.

I see this all over the error_log that apache generates...

[Sun Nov 15 02:59:17 2009] [error] [client 0.0.0.1] DBI::db=HASH(0xc40
+d5a0)->disconnect invalidates 2 active statement handles (either dest
+roy statement handles or call finish on them before disconnecting) at
+ /usr/lib/perl5/site_perl/5.8.8/Apache/Session/Lock/MySQL.pm line 90.
[Sun Nov 15 02:59:20 2009] [error] [client 0.0.0.1] DBI::db=HASH(0xb1a
+def0)->disconnect invalidates 2 active statement handles (either dest
+roy statement handles or call finish on them before disconnecting) at
+ /usr/lib/perl5/site_perl/5.8.8/Apache/Session/Lock/MySQL.pm line 90.

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I always call $sth->finish() on every statement where I do a prepare statement on the database: 
$sth = $dbh->prepare(qq{select * from `table`});
$sth->execute();
my $_var = $sth->fetchrow_hashref();
$sth->finish(); #<--- like this here...

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however when I just pull a single Item I don't call any kind of finish: 
my $_var = $dbh->selectrow_array(qq{select `column` from `table` where
+ `something` = ?}, undef, "somethingelse");
# Done getting $_var no database connection right, to close right?

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at the end of the page loading I call a close to the html page which does this for every page load: 
if($sess_ref) {
$sess_ref->close(); # If there is a session open, close it
}
if($dbh) {
$dbh->disconnect();
}
print end_html();

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The close command that the sess_ref uses is here:

sub close
{
my $self = shift;
    untie (%{$self});
}

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So there is a close to the apache mysql session and a close to the database connection that is using DBI...
So I don't know how there are anything open that is causing a active statement handle to be left open...

Any idea why this happens?
I'd appreciate any feedback.

Thanks,
Rich

In reply to DBI disconnect database errors by Anonymous Monk

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