Problem in dropping a DBLink

Hi!

I have a problem dropping a Database Link. When I drop it and later do a select "Select * from dba_db_links where DB_LINK='Name of the Db_Link'" it gets a row with the DbLink information, but when I try to reuse it (even after creating it agian), it shows the ORA-00600 error.

I have tried to recreate the DBLink, but the information obtained with "Select * from dba_db_links where DB_LINK='Name of the Db_Link'"  shows the information as if the DBLink was created the first time (I mean the first time it was created the 20 November, so It shows this date even if I create it today).