11.2.0.3上仅有一个voting disk可能触发Bug 13869978

11.2.0.2 、11.2.0.3上的cluster中如果仅有一个voting disk可能触发BUG 13869978 , 导致GI重启等问题。

Bug 13869978  OCSSD reports that the voting file is offline without reporting the reason

Affects:

Product (Component)	Oracle Server (PCW)
Range of versions believed to be affected	Versions BELOW 12.1
Versions confirmed as being affected	11.2.0.3 11.2.0.2
Platforms affected	Generic (all / most platforms affected)

Fixed:

This issue is fixed in

12.1.0.1 (Base Release) 11.2.0.4 (Future Patch Set) 11.2.0.3.4 Grid Infrastructure Patch Set Update (GI PSU) 11.2.0.3 Patch 11 on Windows Platforms

Description

When we have a single voting file CSSD report the file offline, but thre is no IO error or hung condition
previous to taking the voting file offline:

[    CSSD][29](:CSSNM00018:)clssnmvDiskCheck: Aborting, 0 of 1 configured voting disks available, need 1
[    CSSD][29]###################################
[    CSSD][29]clssscExit: CSSD aborting from thread clssnmvDiskPingMonitorThread
[    CSSD][29]###################################
[    CSSD][29](:CSSSC00012:)clssscExit: A fatal error occurred and the CSS daemon is terminating abnormally

Rediscovery Notes:

If there is no IO error or IO hung that caused to set the voting file offline, then we may be getting this bug.

Workaround
Use more than 1 voting file.