Re: RMAN datafile allocation to channels

> My condolences on 8.0.5, you should patch to 8.0.5.1 for better a much
> better rman.

Actually we are on 8.0.5.1. What are the differences in rman between these versions?

>
> I think that every channel is used for each datafile. When one datafile
has
> been completely backed up the channels are used for the next. This is
> empiracal thought, what I have observed. I have 2 channels going to one
> disk.

Here is a portion of log file. It is definitely assigning each datafile to a separate channel. It seems to be doing it at random. But, it doesn't look like it balances the output in any way.

RMAN-08008: channel dev1: starting datafile backupset
RMAN-08502: set_count=7143 set_stamp=480787230
RMAN-08010: channel dev1: including datafile 20 in backupset
RMAN-08010: channel dev1: including datafile 15 in backupset
RMAN-08010: channel dev1: including datafile 89 in backupset
RMAN-08010: channel dev1: including datafile 65 in backupset
RMAN-08010: channel dev1: including datafile 39 in backupset
RMAN-08010: channel dev1: including datafile 91 in backupset
RMAN-08010: channel dev1: including datafile 24 in backupset
RMAN-08010: channel dev1: including datafile 80 in backupset
RMAN-08010: channel dev1: including datafile 3 in backupset
RMAN-08010: channel dev1: including datafile 74 in backupset
RMAN-08010: channel dev1: including datafile 46 in backupset
RMAN-08010: channel dev1: including datafile 49 in backupset
RMAN-08010: channel dev1: including datafile 11 in backupset
RMAN-08010: channel dev1: including datafile 9 in backupset
RMAN-08008: channel dev2: starting datafile backupset
RMAN-08502: set_count=7144 set_stamp=480787230
RMAN-08010: channel dev2: including datafile 94 in backupset
RMAN-08010: channel dev2: including datafile 97 in backupset
RMAN-08010: channel dev2: including datafile 88 in backupset
RMAN-08010: channel dev2: including datafile 36 in backupset
RMAN-08010: channel dev2: including datafile 37 in backupset
RMAN-08010: channel dev2: including datafile 34 in backupset
RMAN-08010: channel dev2: including datafile 47 in backupset
RMAN-08010: channel dev2: including datafile 4 in backupset
RMAN-08010: channel dev2: including datafile 38 in backupset
RMAN-08010: channel dev2: including datafile 28 in backupset
RMAN-08010: channel dev2: including datafile 71 in backupset
RMAN-08010: channel dev2: including datafile 70 in backupset
RMAN-08010: channel dev2: including datafile 10 in backupset
RMAN-08010: channel dev2: including datafile 50 in backupset

Keith

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Author: Keith Moore
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