Re: Comparing PostgreSQL and Oracle stability

I am porting code from Oracle to Postgresql, too.
I have missed :
    - distributed database (select,delete,insert,update)
    - tools for development screen (like forms in oracle) (for report I like php)

regards
haris peco
On Wednesday 03 July 2002 06:46 pm, Juan Jose Comellas wrote:
> I am not terribly experienced on this matter, but we have implemented
> several systems using Oracle 8.0.5, DB2 UDB 7.2 and using PostgreSQL 7.1.3.
> All of them are running under Linux, and until this moment I have found
> that under Linux, PostgreSQL is more stable than both Oracle 8.0.5 and DB2
> 7.2, is far easier to administrate and the performance is very good. The
> most important drawbacks we've encountered are:
>
> 1) The need to run VACUUM regularly (this is not much of an issue with
> PostgreSQL 7.2.1 because it doesn't lock the tables), especially if you are
> doing a lot of UPDATEs.
>
> 2) Postgres' query optimizer is not as smart as Oracle's or DB2's, so we
> needed to write the queries in ways that would allow Postgres to optimize
> them so that we could reach a performance similar to Oracle's. We found out
> that Postgres does not handle SELECT ... IN ... queries very well, so we
> had to rewrite them in ways that were not as straightforward.
>
> On Tuesday 02 July 2002 09:59, Thomas Hyldgaard wrote:
> > Hi,
> >
> > I'm considering porting code from Oracle to PostgreSql. I'm looking
> > for opinions from people that are experienced with both PostgreSQL and
> > Oracle:
> >
> > 1) Is the stability better, equal or worse when comparing Oracle 9i?
> > 2) Are there any performance issues to be aware of when comparing
> > PostgreSql an d Oracle (on the same hardware configuration) - eg. size
> > of table colums, count of records in tables (and indexes).
> > 3) And how about the work for DB administrators - are things simpler
> > or more complicated?
> >
> > Best regards
> > Thomas
> >
> >
> >
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