How many channels you can allocate in RMAN?

An #RMAN channel represents one stream of #data to a device type, and corresponds to one #server session. Most #backup and #recovery commands in RMAN are executed by server sessions. Each #channel establishes a connection from the RMAN #client to a target or auxiliary database instance by starting a server session on the instance. The server session performs the #backup, #restore, and 3recovery.
You can use the CONFIGURE CHANNEL #command to #configure channels for use with #disk or tape in all RMAN sessions using automatic channel allocation, or allocate channels manually within a #RUN block. RMAN comes preconfigured with one #DISK channel that you can use for backups to disk.

[sachintiwari]

Sir how many ways we can increase rman backups

[udhayashankar]

Is that possible to reach you over phone?

[sanedba]

can u explain about crontab backups jobs are scheduled and if the job is failed how take the that backup ???