RMAN parallelism Vs channel

Hello friends,

I have two bands as well as my RMAN configuration device type abt_tape parallelism 2. How did this effects number of allocated channels? What is the relationship between the channels and the parallelism? I lived manual confusion, but not for me.

Thank you

Hi RamaKrishna,

Channel is what you create manually when you run a RMAN block. For example if you use the command as «assign channel...» "in an execution block, this means that you manually create channels for RMAN backup.

But if you configure using parallelism "configure channel device type disk (or what type) 2 parallelism, this means RMAN will create two channels automatically if you specify"affect the channel... " ». in your execution block... However if your parallelism is 2 and you allocate 3 channels in your execution block, rman will replace the parallelism number 2 and create 3 channels, as you mentioned manually 3 channels in your execution block.

Hope that it would ve you authorized.

Kind regards

Pradeep. V

Tags: Database

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    Kind regards

    Tycho

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    FileBack=$DIR_BACKUP/$PROVINCIA"_LV0_"%s

    echo $DIR_TERMINAL >/tmp/entry

    mkdir Pei $DIR_BACKUP

    $ORACLE_HOME/bin/rman LOG = $FileLog < < EOF >/dev/null

    connection TARGET;

    backup as compressed backupset incremental of level 0 format '$FileBack' TAG 'RMAN_LV0' database includes current controlfile more entered archivelog delete;

    EXPRESSIONS OF FOLKLORE

    }

    It's the log RMAN backup

    channel ORA_DISK_2: from part 2 to 21 August 15

    RMAN-03009: failure of the backup command on the ORA_DISK_2 channel at 21/08/2015-07:00:56

    ORA-19504: cannot create the file ' / salva_rman/BD/190815/BD_LV0_453.

    ORA-27038: created file already exists

    Additional information: 1

    channel ORA_DISK_2 disabled, job failed on it will run on another channel

    channel ORA_DISK_1: starting from compressed backup set incremental level 0 datafile

    channel ORA_DISK_1: specifying datafile (s) in the backup set

    I do not know why this error.

    I appreciate any help!

    Hello

    change:

    "$FileBack" TAG "RMAN_LV0".

    for:

    "$FileBack" TAG "RMAN_LV0" %u

    Please read the doc format rman on oracle:

    http://docs.Oracle.com/CD/B28359_01/backup.111/b28273/rcmsubcl010.htm

  • RMAN backup gets already

    Hi all;

    RMAN > set the channel 1 device type disc format ' / u01/rmanbkp ";

    new RMAN configuration settings:

    CONFIGURE the CHANNEL 1 DEVICE TYPE DISK FORMAT ' / u01/rmanbkp ";

    new RMAN configuration settings are stored successfully

    output channel: ORA_DISK_1

    RMAN > list backup;

    specification does not match the backups in the repository

    RMAN > backup database tag = "NORMAL_BKP_15_jul_15";

    From 25 July 15 backup

    allocated channel: ORA_DISK_1

    channel ORA_DISK_1: SID = 20 type of device = DISK

    channel ORA_DISK_1: from complete compressed datafile backup set

    channel ORA_DISK_1: specifying datafile (s) in the backup set

    Enter a number of file datafile = 00005 name=/u03/app/oracle/oradata/crms/tbs02.dbf

    Enter a number of file datafile = 00001 name=/u02/app/oracle/oradata/crms/system01.dbf

    Enter a number of file datafile = name=/u01/crmsx4.dbf 00024

    channel ORA_DISK_1: starting piece 1 to July 25, 15

    RMAN-00571: ===========================================================

    RMAN-00569: = ERROR MESSAGE STACK FOLLOWS =.

    RMAN-00571: ===========================================================

    RMAN-03009: failure of the backup command on the channel ORA_DISK_1 at 25/07/2015 10:30:26

    ORA-19504: cannot create the file ' / u01/rmanbkp.

    ORA-27038: created file already exists

    Additional information: 1

    There is no file physically in/u01/rmanbkp

    DB version: 11.2.0.1 on (Redaht)

    RMAN > set the channel 1 device type disc format ' / u01/rmanbkp ";


    Specify format with extension, something like below

    RMAN > set up the channel 1 device type disk format ' / u01/rmanbkp/backup%U';

    http://docs.Oracle.com/CD/B28359_01/backup.111/b28273/rcmsubcl010.htm

  • RMAN-05556: not all data files have backups can be picked up at SNA

    Dear all,

    By RMAN cloning in 11.2.0.3 database with ebs 11i.

    We get below error.

    RMAN-00571: ===========================================================

    RMAN-00569: = ERROR MESSAGE STACK FOLLOWS =.

    RMAN-00571: ===========================================================

    RMAN-03002: failure of Db in dual at 03/07/2015 15:36:20

    RMAN-05501: abandonment of duplicate target database

    RMAN-05556: not all data files have backups can be recovered on SNA 15901715

    991

    RMAN-03015: an error has occurred in the script stored memory Script

    RMAN-06026: some targets not found - abandonment of restoration

    RMAN-06100: no channel to restore a backup or a copy of the data file 94

    RMAN-06100: no channel to restore a backup or a copy of the data file 93

    RMAN-06100: no channel to restore a backup or a copy of the data file 92

    RMAN-06100: no channel to restore a backup or a copy of the data file 91

    RMAN-06100: no channel to restore a backup or a copy of the data file 90

    RMAN-06100: no channel to restore a backup or a copy of the data file 89

    RMAN-06100: no channel to restore a backup or a copy of the data file 88

    RMAN-06100: no channel to restore a backup or a copy of the data file 87

    RMAN-06100: no channel to restore a backup or a copy of the data file 86

    RMAN-06100: no channel to restore a backup or a copy of the data file 85

    RMAN-06100: no channel to restore a backup or a copy of the data file 84

    RMAN-06100: no channel to restore a backup or a copy of the data file 83

    RMAN-06100: no channel to restore a backup or a copy of the data file 82

    RMAN-06100: no channel to restore a backup or a copy of the data file 81

    RMAN-06100: no channel to restore a backup or a copy of the data file 80

    RMAN-06100: no channel to restore a backup or a copy of the data file 79

    RMAN-06100: no channel to restore a backup or a copy of the data file 78

    RMAN-06100: no channel to restore a backup or a copy of the data file 77

    RMAN-06100: no channel to restore a backup or a copy of the data file 76

    RMAN-06100: no channel to restore a backup or a copy of the data file 75

    RMAN-06100: no channel to restore a backup or a copy of the data file 74

    RMAN-06100: no channel to restore a backup or a copy of the data file 73

    RMAN-06100: no channel to restore a backup or a copy of the data file 72

    RMAN-06100: no channel to restore a backup or a copy of the data file 71

    RMAN-06100: no channel to restore a backup or a copy of the data file 70

    RMAN-06100: no channel to restore a backup or a copy of the data file 69

    RMAN-06100: no channel to restore a backup or a copy of the data file 68

    RMAN-06100: no channel to restore a backup or a copy of the data file 67

    RMAN-06100: no channel to restore a backup or a copy of the data file 66

    RMAN-06100: no channel to restore a backup or a copy of the data file 65

    RMAN-06100: no channel to restore a backup or a copy of the data file 64

    RMAN-06100: no channel to restore a backup or a copy of the data file 63

    RMAN-06100: no channel to restore a backup or a copy of the data file 62

    RMAN-06100: no channel to restore a backup or a copy of the data file 61

    RMAN-06100: no channel to restore a backup or a copy of the data file 60

    RMAN-06100: no channel to restore a backup or a copy of the data file 59

    RMAN-06100: no channel to restore a backup or a copy of the data file 58

    RMAN-06100: no channel to restore a backup or a copy of the data file 57

    RMAN-06100: no channel to restore a backup or a copy of the data file 56

    RMAN-06100: no channel to restore a backup or a copy of the data file 55

    RMAN-06100: no channel to restore a backup or a copy of the data file 54

    RMAN-06100: no channel to restore a backup or a copy of the data file 53

    RMAN-06100: no channel to restore a backup or a copy of the data file 52

    RMAN-06100: no channel to restore a backup or a copy of the data file 51

    RMAN-06100: no channel to restore a backup or a copy of the data file 50

    RMAN-06100: no channel to restore a backup or a copy of the data file 49

    RMAN-06100: no channel to restore a backup or a copy of the data file 48

    RMAN-06100: no channel to restore a backup or a copy of the data file 47

    RMAN-06100: no channel to restore a backup or a copy of the data file 46

    RMAN-06100: no channel to restore a backup or a copy of the data file 45

    RMAN-06100: no channel to restore a backup or a copy of the data file 44

    RMAN-06100: no channel to restore a backup or a copy of the data file 43

    RMAN-06100: no channel to restore a backup or a copy of the data file 42

    RMAN-06100: no channel to restore a backup or a copy of the data file 41

    RMAN-06100: no channel to restore a backup or a copy of the data file 40

    RMAN-06100: no channel to restore a backup or a copy of the data file 39

    RMAN-06100: no channel to restore a backup or a copy of the data file 38

    RMAN-06100: no channel to restore a backup or a copy of the data file 37

    RMAN-06100: no channel to restore a backup or a copy of the data file 36

    RMAN-06100: no channel to restore a backup or a copy of the data file 35

    RMAN-06100: no channel to restore a backup or a copy of the data file 34

    RMAN-06100: no channel to restore a backup or a copy of the data file 33

    RMAN-06100: no channel to restore a backup or a copy of the data file 32

    RMAN-06100: no channel to restore a backup or a copy of the data file 31

    RMAN-06100: no channel to restore a backup or a copy of the data file 30

    RMAN-06100: no channel to restore a backup or a copy of the data file 29

    RMAN-06100: no channel to restore a backup or a copy of the data file 28

    RMAN-06100: no channel to restore a backup or a copy of the data file 27

    RMAN-06100: no channel to restore a backup or a copy of the data file 26

    RMAN-06100: no channel to restore a backup or a copy of the data file 25

    RMAN-06100: no channel to restore a backup or a copy of the data file 24

    RMAN-06100: no channel to restore a backup or a copy of the data file 23

    RMAN-06100: no channel to restore a backup or a copy of the data file 22

    RMAN-06100: no channel to restore a backup or a copy of the data file 21

    RMAN-06100: no channel to restore a backup or a copy of the data file 20

    RMAN-06100: no channel to restore a backup or a copy of the data file 19

    RMAN-06100: no channel to restore a backup or a copy of the data file 18

    RMAN-06100: no channel to restore a backup or a copy of the data file 17

    RMAN-06100: no channel to restore a backup or a copy of the data file 16

    RMAN-06100: no channel to restore a backup or a copy of the data file 15

    RMAN-06100: no channel to restore a backup or a copy of the data file 14

    RMAN-06100: no channel to restore a backup or a copy of the data file 13

    RMAN-06100: no channel to restore a backup or a copy of the data file 12

    RMAN-06100: no channel to restore a backup or a copy of the data file 11

    RMAN-06100: no channel to restore a backup or a copy of the data file 10

    RMAN-06100: no channel to restore a backup or a copy of the data file 9

    RMAN-06100: no channel to restore a backup or a copy of the data file 8

    RMAN-06100: no channel to restore a backup or a copy of the data file 7

    RMAN-06100: no channel to restore a backup or a copy of the data file 6

    RMAN-06100: no channel to restore a backup or a copy of the data file 5

    RMAN-06100: no channel to restore a backup or a copy of the data file 4

    RMAN-06100: no channel to restore a backup or a copy of the data file 3

    RMAN-06100: no channel to restore a backup or a copy of the data file 2

    RMAN-06100: no channel to restore a backup or a copy of the data file 1

    Concerning

    Villi Kumar

    Dear all,

    Solution:

    Location of the data file is not correct that we are mentioned in the file (init.ora) settings.

    Change the location of data file settings.

    Test the issue again.

    Concerning

    Villi Kumar

  • RMAN - restoring Controlfile

    I'm trying to restore a controlfile from an earlier date.

    RMAN > backup controlfile list

    Full 146395371.50 MSBT_TAPE00:00:2614 DECEMBER 14 19:27:11
    BP key: 1463956 status: EXPIRED Tablet: NO Tag: TAG20141214T192638
    Handle: ctrl_uaipq5s3l_s54610_p1_t866316405 Media: D05771

    Control file included: cash SNA: 32882311416 cash time: 14 December 14 19:26:45

    The following works:

    Run {}

    allocate channel ch10 device type sbt parms = "ENV = (NB_ORA_CLIENT = myhost)"; "

    Restore controlfile to ' / tmp/test03.ctl ' to 'ctrl_uaipq5s3l_s54610_p1_t866316405 ';

    }

    Yet, using the syntax date breaks down

    RMAN > run {}

    2 > allocate channel ch10 device type sbt parms = "ENV = (NB_ORA_CLIENT = myhost)"; "

    3 > set up to that time ' TO_DATE (December 14, 2014 19:26:45 ',' dd/mm/yyyy hh24:mi:ss') ";

    4 > restore controlfile to ' / tmp/test04.ctl ';

    {5 >}

    allocated channel: ch10

    channel ch10: sid = 976 devtype = SBT_TAPE

    channel ch10: Veritas NetBackup for Oracle - version 7.1 (2011020313)

    executing command: SET until clause

    From restoration to February 26, 15 14:41:34

    output channel: ch10

    RMAN-00571: ===========================================================

    RMAN-00569: = ERROR MESSAGE STACK FOLLOWS =.

    RMAN-00571: ===========================================================

    RMAN-03002: failure of the restore command at 26/02/2015 14:41:35

    RMAN-06026: some targets not found - abandonment of restoration

    RMAN-06101: no channel to restore a backup or a copy of the control file

    I'm set the same channel on tape, but the 2nd syntax fails.

    Anyone has any idea why?

    Change the status of your backup controlfile AVAILABLE with this command:

    BACKUP OF CONTROLFILE CHANGE TAG "TAG20141214T192638" AVAILABLE;

  • Can RMAN backup in 2 places due to the lack of space?

    Oracle 11.2.0.4 on RHEL 6.4

    We have a DB production with RMAN backup (L0) enlarged with compression of 400 GB. We usually tape backup. But, today, I need to save this DB for the local file system.

    I don't have a single file with 400 GB of free space system. But, I

    /ora_backup with 300 GB freespace

    and

    /U04 with 150 GB freespace

    Is it possible to load RMAN instead of 300 GB of backup in the directory/ora_backup/rman pieces and the remaining items of backup to the directory/u04/rman ?

    Hello

    You can use a running script rman with two channels and write each channel on a different disk location, but be sure to choose the number of data file (size of the data file).

    RMAN > run

    {

    ALLOCATE CHANNEL c1 DEVICE TYPE DISK FORMAT ' / ora_backup/%U';

    ALLOCATE CHANNEL c2 DEVICE TYPE DISK FORMAT ' / u04/%U';

    BACKUP INCREMENTAL LEVEL = 0

    (CHANNEL DATAFILE 1,2,3,4 c1)

    (DATAFILE 5,6,7 CHANNEL c2);

    }

    In this example:

    I choose to backup datafile 1, 2, 3 and 4 on the /ora_backup directory, I choose to backup datafile 5, 6 and 7 on the /u04 directory.

    Best regards

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