According to Database Installation Guide 19c, data files on ACFS aren't
supported with Oracle Restart:
"Creating Oracle data files on an Oracle ACFS file system is not supported in
Oracle Restart configurations."
There is, though, a conflict with Automatic Storage Management Administrator's
Guide 19c:
"Oracle ACFS in Oracle Grid Infrastructure 18c cluster and standalone (Oracle
Restart) configurations supports all database files for Oracle Database
releases 11.2.0.4 or higher."
We opened a SR to resolve the conflict. The support said: "not supported."
Best regards,
Nenad
https://nenadnoveljic.com/blog/
From: oracle-l-bounce@xxxxxxxxxxxxx <oracle-l-bounce@xxxxxxxxxxxxx> On Behalf
Of Noveljic Nenad
Sent: Donnerstag, 13. August 2020 14:43
To: Ludovico Caldara <ludovico.caldara@xxxxxxxxx>
Cc: ORACLE-L (oracle-l@xxxxxxxxxxxxx) <oracle-l@xxxxxxxxxxxxx>
Subject: RE: Clusterware with single instance and ACFS
Thank you, Ludo.
Do you know if somebody have published some start/stop scripts (for reference)?
We intend to mirror LUNs with SAN, btw.
Best regards,
Nenad
https://nenadnoveljic.com/blog/about/
From: Ludovico Caldara
Sent: Donnerstag, 13. August 2020 14:29
To: Noveljic Nenad
Cc: ORACLE-L (oracle-l@xxxxxxxxxxxxx<mailto:oracle-l@xxxxxxxxxxxxx>)
Subject: Re: Clusterware with single instance and ACFS
Hi Nenad,
I recommend using Clusterware exactly for the points that you mentioned, the
ACFS mount registry does not work in Oracle Restart and the cluster
dependencies with the storage are not honored.
I have done a few implementations like this (in 12.2+), they work really well.
If you want to upgrade to RAC in the future, be careful that you need to
correctly configure your private interconnect , or you will need to restart
your CRS on the node before adding a new one.
You do not need RAC license as long as you stay in single instance (that means
also no RAC option ON in the binaries).
Cold failover cluster is also an option that does not require RAC, but you have
to code your stop/start scripts.
HTH
--
Ludo
Il giorno mer 12 ago 2020 alle ore 17:45 Noveljic Nenad
<nenad.noveljic@xxxxxxxxxxxx<mailto:nenad.noveljic@xxxxxxxxxxxx>> ha scritto:
I intend to run Oracle 20c Enterprise Edition single instance databases on
Linux and ACFS.
Would you recommend using Clusterware? The advantages are:
- It can automount ACFS file systems
- If we opt one day for RAC, Clusterware would already be there.
Do you see any disadvantages?
Clusterware without RAC doesn’t inflict any additional license costs, right?
Best regards,
Nenad
https://nenadnoveljic.com/blog/about/
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