When I started out as an Oracle DBA on Oracle 7.3, nearly everyone would tell you to avoid doing a "shutdown abort" if at all possible since it leaves the database open to possible corruptions. In the years and versions since, that thinking has softened greatly, to the point that... [Read More]
Oracle Direct NFS (and Linux Routing) ... for Dummies!
When I started my current role a few months ago, I was very interested to learn that direction had been set to migrate away from ASM and onto NFS storage that had some read flash cache in front of it. I'm not the world's biggest fan of ASM and the... [Read More]
UNTIL CANCEL UNTIL CANCEL UNTIL CANCEL
Yesterday I was creating a new Oracle 126.96.36.199 database from a copy of datafiles and archivelogs taken from our standby. I was sure to include archivelogs from just prior to well after the span of the datafile backup time. I had created a new controlfile, gotten everything mounted and recovered... [Read More]
Oracle Restart Underscore Warning!
Bobby Curtis just posted a great post about adding a database to Oracle Restart, aka srvctl. The post is a must-read, but I do have one thing to add. In Bobby's example, he leaves out the instance_name clause (noted by the -i parameter). This won't cause a problem for him... [Read More]
Views, Datatypes and Nulls
Had an interesting little case come up today when helping a client re-write a view. This legacy application stored a date value as January 1, 1970 when they didn't have a date (basically using it as a de facto NULL). I did my best to lecture the client on why... [Read More]