3 Replies Latest reply: Feb 14, 2013 2:02 AM by Helios-GunesEROL RSS

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

      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.