...One other thing you will notice in EL8 is that partprobe is no longer
supported.
- El8 doesn't allow partprobe to read the partition table online after its
modification. The system will keep requesting a reboot to link these
modifications to the kernel. I faced the below error while creating the
asm partitions for RAC19 on RHEL8 last year.
/sbin/partprobe /dev/sdc1 /sbin/partprobe /dev/sdc1 ...
default:
******************************************************************************
default: Configure udev. Sat Aug 31 19:50:31 UTC 2019
default:
******************************************************************************
default: Error: Partition(s) 1, 2, 3, ...64 on /dev/sdc1 *have been
written, but we have been unable to inform the kernel of the change,
probably because it/they are in use. As a result, the old partition(s)
will remain in use. You should reboot now before making further changes. *
To fix this you will need to replace partprobe by "partx -u"
*/sbin/partx -u /dev/sdc1*
OL7 is also a long term release. It will be supported for the next 5 or
6 years, far longer than Oracle 19. OL 6.x is still around. I know of
quite a few Oracle 12.2 instances running on OL 6. I am even supporting
some of them. OL6 is running Linux kernel 3.1. OL 7 is running
relatively recent kernel 4.1. OL 8 is running kernel 5.4. Of course, I
am talking about the "unbreakable" UEK kernels. The main advantage of
Linux 5.x kernels is the new kernel lockdown mode. It's a security
feature, not a performance feature. You don't lose much. OL 8 is
remarkably similar to OL 7 if you disregard things like dnf instead of
yum and nmcli. The real improvement is the NVME driver which has
switched to polling over the interrupts but that only applies if you
have a NVME drive in your database server. Most DB servers that I know
of don't have a NVME drive which is a shame. NVME drives are really good
for redo logs. Unfortunately, they can't be shared, so no RAC.
On 6/24/20 12:09 AM, Mark J. Bobak wrote:
I was thinking 19c because it's a long-term release.
--
Mladen Gogala
Database Consultant
Tel: (347) 321-1217
--
//www.freelists.org/webpage/oracle-l
