November 2001
Intermediate to advanced
126 pages
3h
English
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Channels
A channel is an RMAN server process started when there is a need to communicate with an I/O device, such as a disk or a tape. A channel is what reads and writes RMAN backup files. Any time you issue an RMAN allocate channel command, a server process is started on the target database server. It is through the allocation of channels that you govern I/O characteristics such as:
Type of I/O device being read or written to, either a disk or an sbt_tape
Number of processes simultaneously accessing an I/O device
Maximum size of files created on I/O devices
Maximum rate at which database files are read
Maximum number of files open at a time
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I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.