Oracle : Ошибка ORA-12317


"logon to database (link name %s) denied"
*Cause: There are several possible causes for this error. First, you can
get this error if your username (and password, if you are using
database instead of operating system authentication) in the
secondary database are not identical
to your username (and password) in the primary database. Second,
you can get this error if your username in the secondary database
is invalid (has not been created). Third,
you can get this error if the username/password combination
specified in the connect string of the database link definition
is invalid (either not created or has an invalid password).
*Action: In the first case, ensure that the secondary database contains
a username (and password, if you are using database authentication)
identical to the one you are using in the primary
database. In general, you should always use operating system
authentication in Trusted ORACLE (see the Trusted ORACLE RDBMS
Guide to Security Features for more information about the
advantages of OS authentication).
In the second case, ensure that your username in the
secondary database has been created.
In the third case, ensure that the username specified in the
connect string has been created in the secondary database.

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