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NTPD AND CTSS ON RAC ENV ...
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Message Score Author Date
Dear all, 1) For RAC, why we need CTSS? instead...... Jill Salalila Feb 05, 2018, 19:28
Hi, please check below links on question 1, you...... Mirza Hidayathullah Baig Feb 05, 2018, 20:52
Dear Mirza , In my case, ctss is in observer mo...... Jill Salalila Feb 06, 2018, 14:40
Hi Jill, can you tell us, why you are trying to...... Jan Schnackenberg Feb 08, 2018, 08:47

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Subject: NTPD AND CTSS ON RAC ENV ...
Author: Jill Salalila, Philippines
Date: Feb 05, 2018, 19:28, 15 days ago
Os info: ORACLE LINUX 6.5
Oracle info: 11.2.0.3
Message: Dear all,

1) For RAC, why we need CTSS? instead of NTPD ?
2) What would be maximum time difference between nodes ?

[root@RAC1 Desktop]# crsctl check ctss
CRS-4700: The Cluster Time Synchronization Service is in Observer mode.

THANKS




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Subject: Re: NTPD AND CTSS ON RAC ENV ...
Author: Mirza Hidayathullah Baig, United Kingdom
Date: Feb 05, 2018, 20:52, 15 days ago
Message: Hi,

please check below links on question 1, you get some idea

https://www.freelists.org/post/oracle-l/Question-on-11gR2-RAC-Cluster-Time-Synchronization-Service-CTSS,4

http://grokbase.com/t/freelists.org/oracle-l/116pm55ss7/question-on-11gr2-rac-cluster-time-synchronization-service-ctss

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Subject: Re: NTPD AND CTSS ON RAC ENV ...
Author: Jill Salalila, Philippines
Date: Feb 06, 2018, 14:40, 15 days ago
Message: Dear Mirza ,

In my case, ctss is in observer mode, even ntpd is NOT running.I have stopped ntpd but CTSS is in Observer mode.

>> Please check here

[root@RAC1 Desktop]# service ntpd status
ntpd (pid 3596) is running...

[root@RAC1 Desktop]# crsctl check ctss
CRS-4700: The Cluster Time Synchronization Service is in Observer mode.

[root@RAC1 Desktop]# service ntpd stop
Shutting down ntpd: [ OK ]

[root@RAC1 Desktop]# service ntpd status
ntpd is stopped

[root@RAC1 Desktop]# crsctl check ctss
CRS-4700: The Cluster Time Synchronization Service is in Observer mode.

Thanks


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Subject: Re: NTPD AND CTSS ON RAC ENV ...
Author: Jan Schnackenberg, Germany
Date: Feb 08, 2018, 08:47, 13 days ago
Message: Hi Jill,

can you tell us, why you are trying to change anything here?

CTSS in observer mode is ok, as long a an NTP daemon is running (NTPD needs to run with the "-x" flag!).

Regards,
Jan
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