ASM 12c – no voting/quorum device and OCR?

I installed my first 12c ASM (database is still 11.2.0.4) and I made the 11G disk layout: 2GB for voting/quorum, 2 GB for OCR. However, the installation procedure did not ask me for the voting and OCR devices. ASM came right up without them. So, the devices are not needed for 12c? What about upgrading from 11g, which did need the devices? The “crsctl” utility confirms that voting and OCR devices are not there:

——————————————————————————–
Name Target State Server State details
——————————————————————————–
Local Resources
——————————————————————————–
ora.ACFS.ORASHARE.advm
ONLINE ONLINE rac1 Volume device /dev/a
sm/orashare-453 is o
nline,STABLE
ONLINE ONLINE rac2 Volume device /dev/a
sm/orashare-453 is o
nline,STABLE
ora.ACFS.dg
ONLINE ONLINE rac1 STABLE
ONLINE ONLINE rac2 STABLE
ora.DATA.dg
ONLINE ONLINE rac1 STABLE
ONLINE ONLINE rac2 STABLE
ora.FRA.dg
ONLINE ONLINE rac1 STABLE
ONLINE ONLINE rac2 STABLE
ora.LISTENER.lsnr
ONLINE ONLINE rac1 STABLE
ONLINE ONLINE rac2 STABLE
ora.REDO.dg
ONLINE ONLINE rac1 STABLE
ONLINE ONLINE rac2 STABLE
ora.acfs.orashare.acfs
ONLINE ONLINE rac1 mounted on /orashare
,STABLE
ONLINE ONLINE rac2 mounted on /orashare
,STABLE
ora.asm
ONLINE ONLINE rac1 Started,STABLE
ONLINE ONLINE rac2 Started,STABLE
ora.net1.network
ONLINE ONLINE rac1 STABLE
ONLINE ONLINE rac2 STABLE
ora.ons
ONLINE ONLINE rac1 STABLE
ONLINE ONLINE rac2 STABLE
——————————————————————————–
Cluster Resources
——————————————————————————–
ora.LISTENER_SCAN1.lsnr
1 ONLINE ONLINE rac1 STABLE
ora.LISTENER_SCAN2.lsnr
1 ONLINE ONLINE rac1 STABLE
ora.MGMTLSNR
1 ONLINE ONLINE rac1 169.254.244.71 10.1.
1.10,STABLE
ora.cvu
1 ONLINE ONLINE rac2 STABLE
ora.mgmtdb
1 ONLINE ONLINE rac1 Open,STABLE
ora.oc4j
1 ONLINE ONLINE rac2 STABLE
ora.orcl.db
1 ONLINE ONLINE rac2 Open,STABLE
2 ONLINE ONLINE rac1 Open,STABLE
ora.rac1.vip
1 ONLINE ONLINE rac1 STABLE
ora.rac2.vip
1 ONLINE ONLINE rac2 STABLE
ora.scan1.vip
1 ONLINE ONLINE rac1 STABLE
ora.scan2.vip
1 ONLINE ONLINE rac1 STABLE
——————————————————————————–

That is a very big departure from the classic architecture. Voting and registry devices have been used since the OPS times. The question, still unanswered, is how will CRS determine which node to evict in case of failure. Voting device was used, just as in the “Survivor” show to determine who gets voted off the island.

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About mgogala

I am a long time Oracle DBA, who has worked on very large databases. I have worked with OPS and RAC since its inception.I am also a published book writer, having published two books about PHP. This blog is about the challenges and adventures in my professional life. Sorry, no family pictures here.
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2 Responses to ASM 12c – no voting/quorum device and OCR?

  1. Rui says:

    The OCR and vote are still required. I think the checking it using the ocrcheck utility for the ocr might be worth while to confirm.

    • mgogala says:

      Be that as it may, the installation did not ask for the partitions and my two partitions allocated for that purpose are still free. I know I can create a voting disk group manually, but the whole thing seems to be working correctly without it.

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