ORACLE cross- database access

1,Lacoste Zepher MR2 Trainers, in cross- database access to the server configuration namely to access the database tnsnames
2,Lacoste Shoes, log in using the sysdba list for cross- database access to the database (Note : You must use sysdba list login,Lacoste Shua Lace Trainers, or create a remote database without approval )
3,Lacoste UK, execute the following script to create a remote database linkage :
create public database correlate dblinkname connect apt dbuser identified along dbuserpass using 'TNSNAME'
Note: have to be joined to public,Lacoste Radiate Croc Trainers, or to additional users can not be accessed while recorded in
4,Womens Lacoste Shua Trainers, use the following script to way the remote database
choose * from tablename @ dblinkname