> Also for this time we do not have any problems with oracle servers (and
> we have had many power downs).
>
> (...stuff...)
>
> We found that ext3 is less stable comparing to reiserfs and we need to
> use fsck.
> We are using ~300 tables with ~3M rows (max) .
> Also we are using mostly dual pentium + IDE disks.
The problem is invalid shutdowns + IDE. You must turn off write caching
at the IDE hard drive level to ensure proper data integrity with
Postgres. Oracle gets away with it because it uses a double or triple
redo log while Postgres just uses a single write-ahead log.