Oracle Developer Suite 10g cannot be installed into existing Oracle Home
 

I downloaded the latest Oracle versions for studying. (I don't have a metalink account because I am actually not working)

I want to install Oracle Database 11g + Oracle Developer Suite 10g on the same Windows XP Desktop. I did the following steps :

- Install Oracle Database 11g in ORACLE_HOME "C:\oracle\product\11.1.0\db_1".
- Create a database DEV
- Startup database DEV, listener and configure sqlnet.ora+tnsnames.ora
- Connect to the database with sqlplus system@dev => connection succeeded
- Install Oracle Developer Suite 10g in ORACLE_HOME "c:\oracle\product\DevSuiteHome_1" and choose Installation Type "Complete (1.13 GB)"

When I install Oracle Developer Suite 10g I receive the following error:

Oracle Developer Suite 10g (10.1.2.0.2) cannot be installed into existing Oracle9i 9.2.0.1.0 or higher Oracle Home.

I don't understand why I receive this error. Oracle Developer Suite creates a separate Oracle Home, so I don't understand why the error says that it tries to install into an existing Oracle Home.

What must I do to solve this problem?

Re: Oracle Developer Suite 10g cannot be installed into existing Oracle Home
 

hi... you are trying to install oracle developer suite in the same folder as where you installed oracle database. select a different folder location and you should be fine.

Re: Oracle Developer Suite 10g cannot be installed into existing Oracle Home
 

I tried to install to folder "c:\DevSuiteHome2". But I still receive the same error.

Any oter suggestions?

Re: Oracle Developer Suite 10g cannot be installed into existing Oracle Home
 

See here some supplemental information.

Before installing Oracle 11g database I deleted the registry entry HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE completely. So it's not a registry problem.

Actually the registry entry HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE only contains the entries "KEY_orahome11g" and "SYSMAN". "KEY_orahome11g" is the Oracle home from Oracle 11g database.

In the documentation I only found a section "Preventing Conflicts With Other Oracle Homes" but it only applies to Linux and Solaris, NOT to Windows.

Any other suggestions?

Re: Oracle Developer Suite 10g cannot be installed into existing Oracle Home
 

You need to delete c:\program files\oracle as well. The installer keeps an inventory in there.