PL/SQL :: Query A Remote DUAL Causes ORA-01729 Or ORA-02019

I have ORACLE XE 11g installed on two machines and have been trying my luck to get my local db to query/insert/update a table from the remote db.

I have created the public database link and querying the dba_db_links shows that the links is successfully created (see the bottom of the post). I have also created synonyms for my remote table and queries like select name from jforum_forums succeed, with jforum_forums being a public synonym referring to user.jforum_forums@corona.magic.ubc.ca.

However when I try to insert a row into the remote table, there is a query to the remote DUAL to fetch the last generated ID for a given table similar to the following: SELECT jforum_forums_seq.currval FROM DUAL. Statements of such fail and they either throw an ORA-02019: connection description for remote database not found or ORA-01729: database link name expected. I tried including the database link with the name of the table making it like SELECT jforum_forums_seq.currval FROM DUAL@corona.magic.ubc.ca but that didn't work either.

PS, I should mention that global_names are set to true in both databases and that my database link has the same name as the global_name of the remote database.

OWNER
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DB_LINK
--------------------------------------------------------------------------------
USERNAME
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HOST
--------------------------------------------------------------------------------
CREATED

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