Network Time Protocol

This article describes Network Time Protocol for Base Database Service.

Oracle recommends that you run a Network Time Protocol (NTP) daemon on your 1-node DB systems to keep system clocks stable during rebooting.

Oracle recommends that you configure NTP on both nodes in a 2-node RAC DB system to synchronize time across the nodes. If you do not configure NTP, then Oracle Clusterware configures and uses the Cluster Time Synchronization Service (CTSS), and the cluster time might be out of sync with applications that use NTP for time synchronization.

For information about configuring NTP, see Setting Network Time Protocol for Cluster Time Synchronization.