Changing host Time backwards - two node RAC
968673Oct 16 2012 — edited Jan 4 2013Hello, We have a two node RAC enviornment. Oracle Version: 11.2.0.1, Operating System Microsoft Windows x64 (64-bit) 2003 Server R2
On one of the nodes, host time is ahead by 30 minutues.
What is the impact on the RAC enviornment on setting the clock backwards?
I have read that one should not set the clock backwards, but not sure why.
Cluster Time Synchronization Service (CTSS) is in observer mode. No errors when I run cluvf
Verifying Clock Synchronization across the cluster nodes
Checking if Clusterware is installed on all nodes...
Check of Clusterware install passed
Checking if CTSS Resource is running on all nodes...
Check: CTSS Resource running on all nodes
Node Name Status
------------------------------------ ------------------------
xx-11rac2 passed
xx-11rac1 passed
Result: CTSS resource check passed
Querying CTSS for time offset on all nodes...
Result: Query of CTSS for time offset passed
Check CTSS state started...
Check: CTSS state
Node Name State
------------------------------------ ------------------------
xx-11rac2 Observer
xx-11rac1 Observer
CTSS is in Observer state. Switching over to clock synchronization checks using NTP
Checking daemon liveness...
Check: Liveness for "W32Time"
Node Name Running?
------------------------------------ ------------------------
xx-11rac2 yes
xx-11rac1 yes
Result: Liveness check passed for "W32Time"
Oracle Cluster Time Synchronization Services check passed
Verification of Clock Synchronization across the cluster nodes was successful.