Why Oracle than any other database?

Just needs the inputs .........
What makes Oracle database better than other.
What are the features that makes Oracle as the preferred database.
Recently One Pre-Sales guy from Sybase asked me why Oracle and not Sybase or any other Db.
How to handle such questions......

Lock escalation. There is no such concept in Oracle. Can you lock a million rows in Sybase using a row lock alone and still allow concurrency for other sessions to also lock a million rows? If you commit a million row transaction, how long does it take in Sybase? In Oracle, locking one row or a million rows has the same overheads - there are no overheads. Commit a transaction, be that a one row transaction or a million row transaction, it is equally fast (and usually sub-second).
In Sybase readers block writers and writers block readers. Which means that for readers not to be blocked, they need to read uncommitted (dirty) data. In Oracle, readers never block writers and writers never block readers - and the data delivered via a read is always consistent.
Scalability. No other vendor has anything like the shared everything cluster technology from Oracle called Real Application Clusters.
And this is just scratching the surface. Sybase is technically inferior to Oracle. And that is just a plain fact.
Once sat with a couple of Ingres engineers that were flown out from the UK to fix some serious bugs. Invariable we got talking about db features and they "us too" when I mentioned an Oracle feature. Only I knew that they had no real concept of what the Oracle feature entails and that the so-called equivalent Ingres feature does maybe at best 50% of what the Oracle feature does.
So I showed them instead something simple. Or so I thought. I did a 'SELECT count(*) FROM table' on our data warehouse platform (and old HP box) on the largest fact table. It returned the answer of 700+ million rows in far less than 30 seconds.
Their reaction? First stunned and then the question, "Is this a required feature for the database?", implying that it too can be done (hacked?) in Ingres, should the customer require such a fast select on such a huge table.
No idiot - it is not a requirement. It is simply how Oracle works out of the box when used correctly.
IMO, it is not even worth getting into these feature vs. feature matches with these 3rd party database experts. They do not want to understand what makes Oracle technically superior than their product.
Read the Sybase DBA manual.. or Ingres DBA manual.. or SQL-Server DBA manual. Look at the sections that deal with performance tips and hints. It is fricken scary. And stuff that you will never ever have to deal with in Oracle as it is simply not a problem in Oracle.

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This signature left intentionally blank.

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