Oracle XE 11gR2 installation – “OracleXEService should not be installed already”

Oracle XE 11gR2 beta has just been released, some details here and download here. It’s not a great deal of use for sandboxing DWH-specific stuff, given this list of excluded functionality (and this is by no means everything that’s not included):

  • Bitmapped index, bitmapped join index, and bitmap plan conversions
  • Oracle Partitioning
  • Parallel Data Pump Export/Import
  • Parallel query/DML
  • Parallel Statement Queuing

(source)

However, it’s always interesting to have to hand for trying out other things. And I like playing with new toys 🙂

On running the installer, I hit this problem:

“OracleXEService should not be installed already”

[…]

Checking for Oracle XE Service instance…:
Expected result : OracleXEService should not be installed already.
Actual result: OracleServiceXE found on system.
Check complete: The overall result of this check is failed.

The previous owner of the machine had installed Oracle XE 10, but I’d removed this:

No Oracle XE 10g listed in add/remove programs

Or so I thought:

OracleServiceXE still listed in Services

To remove the service entry, use the sc command:

1
sc delete OracleServiceXE

For good measure I did the same for OracleJobSchedulerXE.

Delete service entries using sc

After this, installation proceeded as normal.

thanks https://rnm1978.wordpress.com/2011/04/04/oracle-xe-11gr2-installation-oraclexeservice-should-not-be-installed-already/

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