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Oracle® Database Reference
11g Release 1 (11.1)

Part Number B28320-01
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Property Description
Parameter type String
Syntax OS_AUTHENT_PREFIX = authentication_prefix
Default value OPS$
Modifiable No

OS_AUTHENT_PREFIX specifies a prefix that Oracle uses to authenticate users attempting to connect to the server. Oracle concatenates the value of this parameter to the beginning of the user's operating system account name and password. When a connection request is attempted, Oracle compares the prefixed username with Oracle usernames in the database.

The default value of this parameter is OPS$ for backward compatibility with previous versions. However, you might prefer to set the prefix value to "" (a null string), thereby eliminating the addition of any prefix to operating system account names.


The text of the OS_AUTHENT_PREFIX parameter is case sensitive on some operating systems.

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