ACFS-9459: ADVM/ACFS is not supported on this OS version: ‘4.18.0-477.27.1.el8_8.x86_64’ after upgrade to RHEL/OEL 8.8
Hi everyone, Hope you’re doing good! A client called me because they faced some issues while they’re upgrading the Operating System from RHEL 7.9 to RHEL 8.8. Note that RHEL means Red Hat Enterprise Linux. Their environment is composed for clusters running on 19c. They…
Disk failed even using Multipath. How? Why?
Hi everyone, hope you’re doing good. In my last post I explained some basic concepts about Multipath and the importance to use it. You can read more here: Device Mapper Multipath – How this works? Why as a DBA I should concern about it? On…
Device Mapper Multipath – How this works? Why as a DBA I should concern about it?
Hi everyone, hope you’re doing good. On this blog post, I’ll discuss about DM Multipath and why this is so important when we are talking about Databases. OK, let’s first understand about how the disks interacts with the databases and/or vice-versa. If we think about…
Scheduler Job does not exist (not visible) in Snapshot Standby Database
Hi everyone! Hope you are doing good! I got a call from a client during their DR test. We do know that usually DR test means when the entire workload is moved to DR site. Some clients never execute DR test. 🙂 For this specific…
Query on Active DataGuard failing with ORA-12801 and ORA-03254
Hi everyone, Hope you’re doing good. I was working with a client where they have their DR environment running with Active DataGuard, ie, a physical standby database opened in read only mode, meanwhile is applying the transactions which are transfered from Production to DR. Sometimes…
omspatcher analyze ending with “The software library location is empty” #JoelKallmanDay
Hi everyone, Hope you’re doing good. Before we go to the subject of this blog post, let me explain why the post have the #JoelKallmanDay tag! Since 2016, Oracle Community have a day where we push out content on the same day and try to…
High System Load with Low CPU Utilization. How?
Hi everyone, Hope you’re doing good! I’m working for a client doing some proactive job to check about performance along the time. I always start a job like this using eDB360. You can check more details about this amazing tool here. I ran eDB360 for…
Ansible Playbook to Update AgentPatcher on OEM Agents
Hi everyone, Hope you’re doing good! In my last blog post, I explained how to apply the latest Release Update on OEM 13.5. You can check it here. In the blog post described above, one of the required steps is to apply Release Update 13.5.0.16…
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My postings reflect my own views and do not necessarily represent the views of my employer, Accenture.