I'm running two instances of mediawiki on the same machine (RHEL3x86). They're in separate directories in the server, and use different databases on the local mysql server (4.1.18). Both instances work fine.
I'm trying to use the dumpBackup.php script (just calling dumpBackup.php --full):
On the older instance (which uses the default database info, and which runs an old mediawiki.1.5.6) the dump works fine.
On the newer instance (which uses mediawiki 1.8.2, and different (from the install default) wgDBname and wgDBuser) the call to dumpBackup.php fails with
DB connection error: Unknown error
Other maintenance scripts (e.g. dumpHTML) work fine too.
Perhaps some piece of info is being assumed to be default in dumpBackup (rather than being picked up from LocalSettings)?
I'm using php 5.1.2, btw.
Any pointers would be appreciated, Corrin