On Wed, 2005-01-19 at 23:03, Troyston Campano wrote: > Hello, > > I am an Oracle DBA and I want do a Postgresql âproof of conceptâ at > the large corporation where I work to test the benefits of using > Postgresql in our environment. I want to install Postgresql onto a > âproductionâ server that currently runs Oracle. Are there any problems > with running Postgresql and Oracle on the same machine? I mean, Iâve > heard that the way Sybase and DB2 UDB are architected to handle memory > hurts Sybase when DB2 UDB is installed on the same machine as the > Sybase Server (something about UDB eating up all the memory and not > giving it back to Sybase). > > > > Are there any issues running Postgresql and Oracle on the same > machineâanything special to know about memory, disk layout, and things > like that? I just want to make sure the two engines play together on > this same server. I had a hard time finding information about this via > google. The only issue you're likely to face is the one you've already mentioned, that Oracle may be configured to use most of the memory on the machine, and PostgreSQL, in general, relies on the OS to do the caching for it. Since there might not be much free / cache memory on the machine, PostgreSQL may run a bit slower than it would were it the only thing on the machine. However, you can always do a benchmark with Oracle running, then shut down oracle for a few minutes and see if PostgreSQL runs any faster with the extra memory being used by the OS to cache the dataset. ---------------------------(end of broadcast)--------------------------- TIP 7: don't forget to increase your free space map settings
