The prefix string used to identify shared Replication Agent system objects.
When Replication Agent generates shared database object names for transaction log components in the primary database, it uses the value of the ra_admin_prefix parameter as an object name prefix.
The value of the ra_admin_prefix parameter specifies the non-alphabetic characters that can be used in the prefix string.
Replication Agent uses the value of the ra_admin_prefix parameter to recognize its system objects in the primary database. Therefore, if you change the value of the ra_admin_prefix parameter after a Replication Agent instance has been created, Replication Agent will not be able to find its objects.
Each Replication Agent instance in a Replication Agent group must be configured with the same value for ra_admin_prefix.