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3 Replies Latest reply: Feb 14, 2013 12:02 AM by Helios-GunesEROL RSS

ORA-12557: TNS:protocol adapter not loadable in Win7 Pro 64-bit

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It is Windows7 Professional 64-bit environment.

I have installed 11gR2.0.3 64-bit version successfully on the machine. But PL/SQL Developer does not work with the 64-bit oracle.

So, I have installed 32 bit client (11gR1) in the separate home. In the PL/SQL Developer tool, I set Oracle Home and OCI Library under Tool->Preference pointing to new 32 bit home.

When trying to login through PL/SQL Developer, I am getting ORA-12557 message.

Please help.

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