Re: High CPU load on Postgres Server during Peak times!!!! - Mailing list pgsql-performance

Dave Dutcher wrote:
> You need a COMMIT for every BEGIN.  If you just run a SELECT statement
> without first beginning a transaction, then you should not end up with a
> connection that is Idle in Transaction.  If you are beginning a transaction,
> doing a select, and then not committing, then yes that is a bug.

The BEGIN can be hidden, though.  For example, if the application is written in Perl,

  $dbh = DBI->connect($dsn, $user, $pass, {AutoCommit => 0});

will automatically start a transaction the first time you do anything.  Under the covers, the Perl DBI issues the BEGIN
foryou, and you have to do an explicit 

  $dbh->commit();

to commit it.

Craig