March 2014

A question came up on oracle-l recently about identifying which temporary segment in v$tempseg_usage is associated with which global temporary table. Here’s my answer:

v$tempseg_usage is a synonym for v$sort_usage – which is the view that I still tend to think of first.

Another one of the cool but underrated features in 12c is the possibility to recover a physical standby over the network with one line in RMAN.

Why do you need to perform this activity? Assume someone really clever created a segment “nologging” and the database was not in force logging mode. This operation cannot be replicated by redo apply on the standby, and you are bound to have a problem. Or, in my case, I had the standby shut down in my lab environment (intentionally) and created a few PDBs on my primary. For some reason I lost an archived redo log. This would of course not happen in a production environment, but my lab VM is limited when it comes to space and I may have moved my backup to a USB disk that I didn’t bring along.

I’m in the midst of transferring over to my travel laptop to run all my VMs on and retiring my previous ASUS work laptop to my youngest son.  I was surprised to find out that not ALL laptops are set up to run virtual environments these days.

1.  Virtualization may not be enabled in the BIOS, (i.e. On-Boot UEFI in the Lenovo Yoga 11s.)

March 16, 2014 (Back to the Previous Post in the Series)  (Forward to the Next Post in the Series) It has been a while since my last post on this blog – I guess that the simple answer is that I was busy with a lot of non-Oracle Database related items, and was suffering from […]