recovery

Oracle Database 12c: Network Recovery in RMAN

Over the past 8 months, I have had the pleasure of working on a soon-to-be-released update for our popular Beginner’s Guide for Oracle Database 12c. Many of the new 12c features have fascinated me and my peers. I have thirsted in particular for the following handful of rman enhancements that are bundled with Database 12c…

Be Warned: cmclean.sql Is Dangerous!

I’m sure one of the most popular scripts for Apps DBAs on My Oracle Support is cmclean.sql from MOS Article ID 134007.1 “Concurrent Processing – CMCLEAN.SQL – Non Destructive Script to Clean Concurrent Manager Tables”. DBAs usually use the script to clean up stale data from concurrent processing tables (FND_CONCURRENT_%) after incidents like a crash…

Metalink Note on Datafile Recovery Will Corrupt Database

Thinking I had something new, I wrote this article about recovering deleted files. However, it turns out Frits Hoogland had already blogged about recovery of deleted files on linux, as Frits pointed out in a comment on my blog, where he also mentioned a metalink note on this matter. The procedure outlined in the note describes how to recover the deleted file and put it in the same location as the deleted file. The problem is that it doesn’t include offlining/onlining the file, so the database ends up with two distinct copies of the file.