1). Here some simple but also perplexing terms need to be explained, such as ICE, WO, RI and Stack Shutdown .
2). How to understand the following 'locked' issues happened under what the problematica condition should be ？
Just abstracted from the corresponding crsd.log:
2021-07-30 14:31:14.338: [ CRSPE][11053]{1:9788:40030} ICE has queued an operation. Details: Operation [STOP of [ora.abchost1.vip 1 1] on [abchost1] : 11
57333d0] cannot run cause it needs W lock for: WO for Placement Path RI:[ora.abchost1.vip 1 1] server [] target states [OFFLINE ], locked by op [STOP of [or
a.abchost2.vip 1 1] on [abchost1] : 1157484d0]. Owner: CRS-2682: It is locked by 'root' for command 'Stack Shutdown : abchost1' issued from 'abchost1'