Re: Can you create a database link back to same database instance?

> I have this application that archives data to a different schema on
> the same instance using database link. This is probably due to the
> fact that in the Production environment it is archived to a
> different instance. Two schemas are using database links to
> connect to themselves. One successfully connects using the same
> service name to itself but the other does not. I am wondering what
> the trick the schema has while the other one can't connect.
>
> Example: In tnsnames.ora two service names are defined DB1 and DB2
> (these are also the SID's)
>
> At DB1 instance a public database link is created.
>
> CREATE PUBLIC DATABASE LINK arcdb CONNECT TO arc_db IDENTIFIED
> BY .....
> USING "DB1";
>
> This works. But in the other instance,
>
> CREATE PUBLIC DATABASE LINK arcdb CONNECT TO arc_db IDENTIFIED BY ...
> USING "DB2";
>
> doesn't work.

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