General
OCI library (oci.dll)
Choose the Oracle Client/Oracle Instant Client folder path that includes the OCI library (oci.dll) for Oracle connection.
Oracle Instant Client is the simplest way to deploy a full Oracle Client application built with OCI, OCCI, JDBC-OCI, or ODBC drivers. It provides the necessary Oracle Client libraries in a small set of files. It has already included in Navicat installation folder. You can also download Oracle Client / Oracle Instant Client through -
Downloading
Oracle Client
http://www.oracle.com/technology/software/products/database/index.htmlOracle Instant Client
http://www.oracle.com/technology/software/tech/oci/instantclient/index.htmlInstallation Guide
Oracle Client
http://download.oracle.com/docs/cd/B28359_01/install.111/b32282/toc.htmOracle Instant Client
http://www.oracle.com/technology/tech/oci/instantclient/index.html
See also:
General Settings for Oracle