An IT infrastructure perspective on optimizing business applications
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,…
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…
Sometimes there is questioning on how EMC can provide consistent snapshots on storage systems, given the fact that file systems like ext3, ufs and the like may keep write data in file system (server) cache.
Archiving and purging old data In the end, if you want to seriously reduce the effective size of a database (after using all innovations on the infrastructure level) is to move data out of the database on to something else.…
Database compression Another technique that Oracle has improved as of version 11g is compression. In versions up to 10g you could only compress an entire table, and after that, random performance on a compressed table was poor. It…