Time synchronization

Whenever you use replication that requires time stamp, time stamp with a stored procedure, or delete wins conflict resolution, you must synchronize the operating system times of the database servers that participate in the replicate.

All timestamps and internal computations are performed in Greenwich Mean Time (GMT) and have an accuracy of plus or minus one second.

Important: Enterprise Replication does not manage clock synchronization between database servers that participate in a replicate. You should use a product that supplies a network time protocol to ensure that times remain synchronized. For information on tools for synchronizing the times, refer to your operating system documentation.

To synchronize the time on one database server with the time on another database server, use one of the following commands, where hostname or servername is the name of the remote database server computer.

UNIX™
rdate hostname
Windows™
net time \\servername /set
net time /domain:servername /set
Important: These commands do not guarantee the times will remain synchronized. If the operating system times of the database servers do become out of sync or if their times move backward, time stamp or stored procedure conflict resolution might produce failures caused by incorrect time stamps.