To create a connection to the primary Replication Server:

Log in to the primary Replication Server as the System Administrator (sa) using isql:
```
isql -Usa -Psa_password -Sservername
```
Create the connection using the following syntax:
```
create connection to RS_source_ds.RS_source_db
set error class error_class
set function string class function_class
set username maintenance_user_ID
set password maintenance_password
with log transfer on, dsi_suspended
```
The following example creates a connection for the DSNA DB2 subsystem in the MVSA data server. These values should match the data server and database names you specify in the RS_source_db and RS_source_ds parameters in the LTM for MVS configuration file. Replication Server uses the default rs_sqlserver_error_class error class to handle errors for the database.

In addition, Replication Server uses the function strings in the default rs_sqlserver_function_class function string class for data manipulation operations.