Concurrent execution of Oracle RMAN backup of a single file

Concurrent execution of Oracle RMAN backup of a single file

If a file is a file of several gigabytes or tens of thousands of megabytes, You Need To parallelize the backup of the file. Generally, one channel can only read one file, however, you can use the multi-segment keyword to change this line:

Run {

Allocate channel t1 type sbt;

Allocate channel t2 type sbt;

Allocate channel t3 type sbt;

Allocate channel t4 type sbt;

Backup as compressed backupset datafile 16 section size 10g;

}

This script starts four channels, each of which reads 10 Gb segments of 16 data files. Each channel will generate copies of segments (separate physical files ). If the file is 200 GB, there will be 20 such slices, and 4 are generated at a time. If the keyword "section size" is not specified, parallel reading is 1 (that is, serialization) and the entire operation is executed through one channel.

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