On launching SQL Optimizer from with Toad for Oracle, error message 'Initialization error. SQL*Net not properly installed' is displayed.
The client being used may be the 'Instant Client'. SQL Optimizer/Tuning module within Toad for Oracle requires full Oracle Client.
RESOLUTION 1:
Install full Oracle client
RESOLUTION 2:
Install 'Quest SQL Optimizer for Oracle v7.0' which supports 'Instant Client'
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