Oracle Disk Manager improves database I/O performance to VxFS file systems by:
Supporting kernel asynchronous I/O
About kernel asynchronous I/O support
Supporting direct I/O and avoiding double buffering
About direct I/O support and avoiding double buffering
Avoiding kernel write locks on database files
About avoiding kernel write locks on database files
Supporting many concurrent I/Os in one system call
About supporting many concurrent I/Os in one system call
Avoiding duplicate opening of files per Oracle instance
About avoiding duplicate file open calls
Allocating contiguous data files
About allocating contiguous data files