Google shows you asking this question on this list two years ago, with apparently no response. I don't have a definitive response either, so perhaps it originated from the word "grok <http://en.wikipedia.org/wiki/Grok>", which originated 50 years ago in the science-fiction novel "Stranger In A Strange Land" by Robert Heinlein. If so, it would most likely be used as a verb, but In the CSSD logs it seems to be used as a noun or adjective. Nevertheless, it wouldn't be the first time a programmer re-purposed an obscure science-fiction reference in their work... On 8/6/2013 2:51 AM, Maclean Liu wrote: > > Ask Maclean Liu Oracle http://www.askmaclean.com/ > > > > SHOUGÉϺ£OracleÓû§×é http://www.shoug.info > > > > > On Wed, May 4, 2011 at 6:41 PM, Maclean Liu <maclean_007@xxxxxxx> wrote: > >> Hello list, >> >> I have a question , what does Grock mean in Oracle RAC CSS? >> I always find some Grock associated info from ocssd.log, like below: >> " >> 2011-04-29 04:00:19.056: [ CSSD][1076291904]clssgmQueueShare: >> (0x2aaab001a980) target global grock DBPROD member 0 type 1 queued from >> client (0x2aaab00cbd60), global >> grock DBPROD, refcount 12 >> 2011-04-29 04:00:19.063: [ CSSD][1076291904]clssgmQueueShare: >> (0x2aaab0133fd0) target local grock DG_LOCAL_DATA member 0 type 1 queued >> from client (0x2aaab0150760), >> local grock DG_LOCAL_DATA, refcount 11" >> >> I have searched this word, but no exactly result. >> >> >> Maclean Liu >> Oracle Database Administrator >> Oracle Certified Master >> <http://www.youyus.com> >> > -- > //www.freelists.org/webpage/oracle-l > > > > -- //www.freelists.org/webpage/oracle-l