can u pls. furnish the following info.?
1. whether uer dblink name is the same as uer global database name?
2. that uer global database name is the same name as uer database appended with a .world?
3. also the error u have encountered suggests 'end-of-file' which could mean sql*net commn. failure, network failure or oracle internal failure, if u can furnish more information then definitely could help.
4. pls. do this
SQL> select owner,dblink_name from all_db_links where dblink_name = 'your dblink name'
SQL> select * from global.name;
SQL> select name from v$database;
i may not be correct on the view name, but u could find it out,
pls. do update me with the above info. shall help
i am in complete agreement with ben, it appears that uer tnsnames.ora on the cleint machine is not configured for the target database, all the info. provided by u means that things are ok with the dblink(that was true anyhow or else uer dblink would not have worked from the server), just made myself clear on the issue