I have several installs of various WP verions on a web server connecting to MySQL on a different host. These installs are maintaining persistent database connections. This is a problem as the DNS can change on the MySQL server and these installs keep the old.
The file wp-db.php doesn't have the call mysql_pconnect, but have the normal mysql_connect
We have a number of installs with the same host for both web and DB (same MySQL as above) and they don't have the same issue.
Any suggestions on cause/solution?