Installed 2 10g oracle homes and get ora-12557

hi,
I have installed 2 oracle 10g homes and now cannot connect to sqlplus as sysdba
the error is 0ra-12557, TNS protocol adapter not loasdable.
the installation is on windows 2003 server
everything was fine until the second oracle home was added.
help is appreciated
rgds
alan

Typically this a PATH variable problem
The golden rule is to install the oldest product first.
Then make sure you path has the right ORACLE_HOME/bin 's
In the right order.
Remeber if you run say sqlplus from ORACLE-HOME1 it will look in
ORACLE_HOME1/network/admin for its tnsnames files etc
If you run sqlplus fom ORACLE_HOME2 then it will look in
ORACLE_HOME2/network/badmin
I always clone the network config files so they are the same in all homes.
You have to be a little bit careful about this. FOr instance I have forms 6i wihich uses Net 8 so I can't exacly clode the tnsnames etries.
But you get the picture.
And generally make sure ORACLE_HOME is not set in your windows environment.
Ths will cause problems.

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