Wikimedia Bugzilla is closed!

I'm new to MediaWiki, so sorry if this is nonsense. I wanted to run the 
commandline script maintenance/rebuildtextindex.php but this gives me:

# php maintenance/rebuildtextindex.php
DB connection error: Access denied for user 'mw_toetschat'@'websrv1.zmi.at' 
(using password: YES) (db1.zmi.at)

Sniffing told me there's a connect to 3306, which is MySQL, but I'm using 
PostgreSQL here. As the MediaWiki in general works, it seems there's a bug 
somewhere. I'm not a hacker, so I can't find out where's the problem.

Part of my LocalSettings.php:
$wgDBtype           = "postgres";
$wgDBserver         = "db1.zmi.at";
$wgDBname           = "<mydbname>";
$wgDBuser           = "<myuser";
$wgDBpassword       = "<mypwd>";
$wgDBport           = "5432";
$wgDBprefix         = "";

What could I do?

mfg zmi