SQL*Net Not Properly Installed

[chneoh]

PL/SQL failed to initialize and hit with the error of "SQL*Net not properly installed"

The configuration I have is:

- Windows 7 64 bits
- Oracle Client 11g R2 64 bits

 

[Marco Kalter]

You will need to install a 32 Bit Oracle11g Client. PL/SQL Developer is a 32 Bit application, so it cannot interface with a 64 Bit Oracle Client.

The 32 Bit Oracle Client can communicate with a 64 Bit Server, even on the same machine if necessary. The 32 Bit client can coexist with a 64 Bit Oracle installation when installed in separate Oracle Home directories.