ORACLE的DB_LINK

很有用，留着以后再慢慢编辑。

--user_db_links
--字段
----db_link,
----username,
----password,
----host,
----created
select * from user_db_links;

--v$dblink
--字段
----db_link,
----owner_id,
----logged_on,
----heterogeneous,
----protocol,
----open_cursors,
----in_transaction,
----update_sent,
----commit_point_strength
select * from v$dblink;

--dba_db_link
--字段
----owner,
----db_link,
----username,
----host,
----created
select * from dba_db_links;