Posts by Rene Antunez

MySQL: Troubleshooting an Instance for Beginners

So as you may know, my new position involves the MySQL world, so I’m in the task of picking up the language and whereabouts of this DBMS, and my teamate Alkin Tezuysal (@ask_dba on Twitter) has a very cool break and fix lab which you should check out if you are going to Percona Live London…

RMAN 12c : Say goodbye to your backup when dropping your PDB

I was working on my presentations for IOUG Collaborate, and I came upon this strange behaviour in RMAN 12c (12.1.0.1.0) which to me, shouldn’t happen. Seems that when you do a DROP PLUGGABLE DATABASE , it is the equivalent of DROP DATABASE INCLUDING BACKUPS. This means that if you need to restore your PDB later…

How to Apply a Standby-First PSU Patch in a 2 node RAC environment

Oracle provides since it’s 11.2.0.1 version a way to apply certain patches, to our standby environment first, without compromising the primary database, to allow to let it burn in the Standby  for the time you deem appropriate and then apply the patch binaries to the primary BD ORACLE_HOME and these will cascade into our Standby DB. The first…

My First Five Minutes with Oracle Database 12c

As many of you know, Oracle Database 12cR1 was released last week, and it did something that I haven’t seen before from an Oracle database release: it caused a blogging storm. According to Steve Karam a.k.a Oracle Alchemist, in less than a week we have had 91 articles from 47 authors regarding this release. For me,…

The Importance of an Action Plan

When I started my work in IT, I used to be in a very small shop. And even though we had people in several places in the same state, everything used to be very centralized, and work was from 9 to 5. Since we were basically only 2 people , our action plan used to…

The Undocumented Status “M” of an RMAN Backup

It is not uncommon for Oracle to have something undocumented , and this is just another case of this ailment. We have a database in which we have two copies of the same backup: one kept in the FRA and the other in an external disk, which from time to time gets deleted from this…

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