Desaster recovery in a nutshell for Oracle Database 10gR2

The article gives a brief overview how to restore and recover an Oracle database. Of course its a requirement to have a working rman backup of the database. We start at the point where the database is lost and we need to restore it from scratch using the backup files. In this scenario we use a controlfile and not a catalog database. Before you begin you need to make sure that the failed storage is available again and the directories and permissions are created and granted. 

Using direct I/O and the solaris dtrace tool

Using Solaris Dynamic Tracing (dtrace) can help to eliminate hotspots on files and give an insight to your system. Oracle ported dtrace to Oracle Linux which makes it just more interesting. This article gives a quick start using the dtrace facility and direct I/O. The detailed dtrace description can be found in its documentation.