A list of questions being asked to my most recent webcast on Oracle replatforming together with Madora Consulting. I decided to put the Q&A on the blog so anyone can benefit instead of just the 100+ attendees we had on…
Oracle snapshots and clones with ZFS
Another Frequently Asked Question: Is there any disadvantage for a customer in using Oracle/SUN ZFS appliances to create database/application snapshots in comparison with EMC’s cloning/snapshot offerings? Oracle marketing is pushing materials where they promote the ZFS storage appliance as the…
Duplexing Oracle Redo logs?
A customer asked me recently what EMC’s advice is regarding duplexing Oracle redo logs. There is a thought behind this – Oracle redo logs are sensitive to data corruption – if redo logs are corrupt, there is no way to…
Pinpointing I/O bottlenecks on Linux
Does this story sound familiar? The end users of a database application start complaining about poor system response and long running batch jobs. The DBA team starts investigating the problem. DBA’s look at their database tools such as Enterprise Manager,…
How to set disk alignment in Linux
As you might know, if disk partitions containing Oracle datafiles are not aligned with the underlying storage system, then some I/O’s can suffer from some overhead as they are effectively translated in two I/O’s. If you want more info, google…