What Are SQL*Plus Environment Variables

Q

What Are SQL*Plus Environment Variables? - Oracle DBA FAQ - Introduction to Command-Line SQL*Plus Client Tool

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A

Behaviors of SQL*Plus are also controlled a some environment variables predefined on the local operating system. Here are some commonly used SQL*Plus environment variables:

ORACLE_HOME - The home directory where your Oracle client application is installed.
PATH - A list of directories where SQL*Plus will search for executable or DLL files. PATH should include $ORACLE_HOME\bin.
SQLPLUS - The directory where localization messages are stored. SQLPLUS should be set to $ORACLE_HOME\sqlplus\mesg
TNS_ADMIN - The directory where the connect identifier file, tnsnames.ora is located. TNS_ADMIN should be set to $ORACLE_HOME/network/admin.

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