we use OCI8 1.2.5 (pecl), because of the curso leak problems in 1.2.4

BUT we have performance problems, maybe the problem with the cursor leaks again in version 1.2.5.....?!
suddenly the 4/5 normal sessions (60 users in one minute in moodle) on the database server expand to 700...and we have to start it up again...after half an hour...the webserver processes also rise to this levels...
when we restart the database, everything wents back to normal...

is there anything we can do?
maybe set a timetolive somewhere?
downgrade to oci8 1.2.3?