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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 we keep in the FRA, the other one in an external disk, which from time to time gets deleted from this second disk. But what happens after you do a crosscheck and one of those 2 backups is expired? The one in the FRA is available and the one in the external disk is expired for RMAN, but how will you see it in your listing?
Log Buffer #316, A Carnival of the Vanities for DBAs
Just as information has become an integral part of technology, blogging has become an inseparable part of technology too. Database technologies are no exception and blogging in that arena is booming. This Log Buffer Edition is booming with some bombastic blog posts.
Oracle:
Arup Nanda asks. Application Design is the only Reason for Deadlocks? Think Again.
When to use MongoDB and Hadoop
Pythian has been working with clients on big data consulting projects and when it comes to MongoDB and Hadoop we are often asked 2 questions.
- What is the differences between Hadoop and MongoDB?
- Can Hadoop and MongoDB be used together?
Alex Gorbachev, Pythian’s CTO recorded this short video to share his insight and answer these two questions.
MetaCPAN JavaScript API
Sometimes, it’s humongous revolutions. Most of the time, it’s an itsy bitsy evolutionary steps. Today’s hack definitively sits in the second category, but I have the feeling it’s a little dab of abstraction that is going to provide a lot of itch relief.
Data Types and How They Affect Performance
When I was in high school, my practical arts teacher asked us to create a miniature of a structure. This meant looking at the blueprints of an existing structure and using it to create a small replica. I thought that this would be a great opportunity to learn more about reading blueprints and understanding what they are and how they affect structures. So, I asked my mom if I can look at our single-story house’s blueprints as the basis for my project.
IOUG Collaborate 2013 Wrap-Up
By now the Denver Convention Center is probably cleaned up from IOUG Collaborate. The signs directing thousands of attendees to top-notch technical presentations have been removed, the twenty rental laptops which composed the classroom for Pythian’s RAC Attack class have been returned and the vendor exhibition floor has been completely cleared out. Flight delays notwithstanding (thanks to some midwest weather), attendees are generally home by now – even those coming from places as far away as Germany and Australia.
Log Buffer #315, A Carnival of the Vanities for DBAs
Like in love there is no precondition, there are no limits held when it comes to the labor of love called as blogging. Lovingly this Log Buffer edition brings you some more roses from database arena.
Oracle:
Trying out S-ASH: historical performance data for the under-licensed
I was recently playing with an Oracle XE database. The main benefit of Oracle XE is that it can be used free of charge.
COLLABORATE 13 Day Two
Like most days at these shows and my not attending shows life, the day started early and I was out of the room by 7am. The general session at 9:15 featured Aron Ralston, a canyoneer whose real-life experience over a 127 hour period in April 2003 culminated in the triumph of the will to live and to love winning over a potential life-threatening accident.
COLLABORATE13 Day One
Another Saturday night and I’ve got lots buddies … a take-off on a Sam Cooke ditty from the 60′s. Denver came alive once I arrived at the Hyatt and went full tilt until the wee hours of the morning. Saturday was all about catching up with friends. Some of these people I have been hanging out with for 22 years at these conferences and they are more like family. First task today was registering which was a breeze. There have been mega improvements in this process as the IT solutions become more mature.
