Re: RMAN backups of SAP database

From: Leng <lkaing_at_gmail.com>
Date: Tue, 25 Feb 2020 05:14:02 +1100
Message-Id: <84F5FE27-B0C6-473F-B52D-F11097C7A6F8_at_gmail.com>



The Rman backup log itself isn’t showing a compressed backup. So compression shouldn’t be the problem here.

There are in fact 4 channels rather than 2. So you’ll need to experiment with the number of channels - more isn’t always better. If backups are impacting performance you may also need to consider throttling the backup rather than throwing more channels at it.

And yes get faster disks for the backup if you can. eg. Compare a single backup to /oracle vs /backup_new

Cheers,
Leng

> On 25 Feb 2020, at 4:23 am, Jeffrey Beckstrom <jbeckstrom_at_gcrta.org> wrote:
>
> 
> If SAP is doing begin/end backup, then it would not be using RMAN nor doing a compressed backup. Your RMAN is doing a compressed backup so that would use additional CPU resources.
> >>> Sandra Becker <sbecker6925_at_gmail.com> 2/24/20 12:13 PM >>>
> Thanks everyone for you suggestions and comments. I can tell you they are definitely using the version 7 style of backup where they "alter tablespace <tablespace_name> begin backup".
>
> Here are the RMAN configuration and backup script they are using. I'm trying to see if they still have the rman backup log from their last attempt.
>
> CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 4 DAYS;
> CONFIGURE BACKUP OPTIMIZATION ON;
> CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default
> CONFIGURE CONTROLFILE AUTOBACKUP OFF;
> CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default
> CONFIGURE DEVICE TYPE DISK PARALLELISM 3 BACKUP TYPE TO BACKUPSET;
> CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
> CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1;
> CONFIGURE CHANNEL DEVICE TYPE DISK FORMAT "/backup_new/Backups/dgcs064/DB01/rman/full_ol_%t_s%s_s%p";
> CONFIGURE MAXSETSIZE TO UNLIMITED; # default
> CONFIGURE ENCRYPTION FOR DATABASE OFF; # default
> CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default
> CONFIGURE COMPRESSION ALGORITHM 'MEDIUM' AS OF RELEASE 'DEFAULT' OPTIMIZE FOR LOAD TRUE;
> CONFIGURE ARCHIVELOG DELETION POLICY TO BACKED UP 1 TIMES TO DISK;
> CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/oracle/DB01/112_64/dbs/snapcf_DB01.f'; # default
>
>
> RUN
> {
> set command id to 'ORCLOnlineBackupFull';
> ALLOCATE CHANNEL c1 DEVICE TYPE disk;
> ALLOCATE CHANNEL c2 DEVICE TYPE disk;
> ALLOCATE CHANNEL c3 DEVICE TYPE disk;
> ALLOCATE CHANNEL c4 DEVICE TYPE disk;
> backup AS BACKUPSET full database tag ORCL_FULL format '/backup_new/XXX_SAP_Backups/XXX/rman/XXX_%d_%T_%s_%p_FULL
> ' plus archivelog ;
> backup tag ORCL_CONTROL current controlfile format '/backup_new/XXX_Backups/XXX/rman/%d_%T_%s_%p_CONTROL'
> ;
> DELETE NOPROMPT OBSOLETE;
> release channel c1;
> release channel c2;
> release channel c3;
> release channel c4;
> }
>
> Backup log:
>
> ----------------------------------------------------------------------
> Running: online_backup_disk.ksh on xxxxxxxxxxxxx
> AS: oraXXX
> At: 20:00:02 on 02/15/2020
>
> backup processes = 0
> Starting RMAN...
>
> Recovery Manager: Release 11.2.0.4.0 - Production on Sat Feb 15 20:00:02 2020
>
> Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.
>
> connected to target database: XXX (DBID=3807154456)
> connected to recovery catalog database
>
> RMAN> RUN
> 2> {
> 3> set command id to 'ORCLOnlineBackupFull';
> 4> ALLOCATE CHANNEL c1 DEVICE TYPE disk;
> 5> ALLOCATE CHANNEL c2 DEVICE TYPE disk;
> 6> ALLOCATE CHANNEL c3 DEVICE TYPE disk;
> 7> ALLOCATE CHANNEL c4 DEVICE TYPE disk;
> 8> backup AS BACKUPSET full database tag ORCL_FULL format '/backup_new/YYY_Backups/xxxxxxxxxxxxx/XXX/rman/%d_%T_%s_%p_FU LL' plus archivelog ;
> 9> backup tag ORCL_CONTROL current controlfile format '/backup_new/YYY_Backups/xxxxxxxxxxxxx/XXX/rman/%d_%T_%s_%p_CONTRO L';
> 10> DELETE NOPROMPT OBSOLETE;
> 11> release channel c1;
> 12> release channel c2;
> 13> release channel c3;
> 14> release channel c4;
> 15>
> 16> }
> 17>
> executing command: SET COMMAND ID
>
> allocated channel: c1
> channel c1: SID=21 device type=DISK
>
> allocated channel: c2
> channel c2: SID=85 device type=DISK
>
> allocated channel: c3
> channel c3: SID=15 device type=DISK
>
> allocated channel: c4
> channel c4: SID=51 device type=DISK
>
>
> Starting backup at 15-FEB-20
> current log archived
> channel c1: starting archived log backup set
> channel c1: specifying archived log(s) in backup set
> input archived log thread=1 sequence=37962 RECID=18943 STAMP=1032307471
> input archived log thread=1 sequence=37963 RECID=18944 STAMP=1032327553
> input archived log thread=1 sequence=37964 RECID=18945 STAMP=1032355400
> channel c1: starting piece 1 at 15-FEB-20
> channel c2: starting archived log backup set
> channel c2: specifying archived log(s) in backup set
> input archived log thread=1 sequence=37965 RECID=18946 STAMP=1032382820
> input archived log thread=1 sequence=37966 RECID=18947 STAMP=1032393884
> input archived log thread=1 sequence=37967 RECID=18948 STAMP=1032415345
> channel c2: starting piece 1 at 15-FEB-20
> channel c3: starting archived log backup set
> channel c3: specifying archived log(s) in backup set
> input archived log thread=1 sequence=37968 RECID=18949 STAMP=1032420919
> input archived log thread=1 sequence=37969 RECID=18950 STAMP=1032426942
> input archived log thread=1 sequence=37970 RECID=18951 STAMP=1032433588
> channel c3: starting piece 1 at 15-FEB-20
> channel c4: starting archived log backup set
> channel c4: specifying archived log(s) in backup set
> input archived log thread=1 sequence=37971 RECID=18952 STAMP=1032438208
> input archived log thread=1 sequence=37972 RECID=18953 STAMP=1032458451
> input archived log thread=1 sequence=37973 RECID=18954 STAMP=1032466012
> channel c4: starting piece 1 at 15-FEB-20
> channel c1: finished piece 1 at 15-FEB-20
> piece handle=/oracle/XXX/oraflash/XXX/backupset/2020_02_15/o1_mf_annnn_TAG20200215T200656_h4jmv1t3_.bkp tag=TAG20200215T 200656 comment=NONE
> channel c1: backup set complete, elapsed time: 00:00:10
> channel c2: finished piece 1 at 15-FEB-20
> piece handle=/oracle/XXX/oraflash/XXX/backupset/2020_02_15/o1_mf_annnn_TAG20200215T200656_h4jmv1vz_.bkp tag=TAG20200215T 200656 comment=NONE
> channel c2: backup set complete, elapsed time: 00:00:10
> channel c3: finished piece 1 at 15-FEB-20
> piece handle=/oracle/XXX/oraflash/XXX/backupset/2020_02_15/o1_mf_annnn_TAG20200215T200656_h4jmv2lp_.bkp tag=TAG20200215T 200656 comment=NONE
> channel c3: backup set complete, elapsed time: 00:00:09
> channel c4: finished piece 1 at 15-FEB-20
> piece handle=/oracle/XXX/oraflash/XXX/backupset/2020_02_15/o1_mf_annnn_TAG20200215T200656_h4jmv4w5_.bkp tag=TAG20200215T 200656 comment=NONE
> channel c4: backup set complete, elapsed time: 00:00:07
> Finished backup at 15-FEB-20
>
> Starting backup at 15-FEB-20
> channel c1: starting full datafile backup set
> channel c1: specifying datafile(s) in backup set
> input datafile file number=00008 name=/oracle/XXX/yyyyyyy5/sr3_5/sr3.data5
> input datafile file number=00025 name=/oracle/XXX/yyyyyyy2/sr3700_1/sr3700.data1
> input datafile file number=00034 name=/oracle/XXX/yyyyyyy4/sr3_25/sr3.data25
> input datafile file number=00002 name=/oracle/XXX/yyyyyyy1/sysaux_1/sysaux.data1
> input datafile file number=00003 name=/oracle/XXX/yyyyyyy1/undo_1/undo.data1
> input datafile file number=00001 name=/oracle/XXX/yyyyyyy1/system_1/system.data1
> input datafile file number=00037 name=/oracle/XXX/yyyyyyy1/system_2/system.data2
> input datafile file number=00015 name=/oracle/XXX/yyyyyyy2/sr3_12/sr3.data12
> channel c1: starting piece 1 at 15-FEB-20
> channel c2: starting full datafile backup set
> channel c2: specifying datafile(s) in backup set
> input datafile file number=00035 name=/oracle/XXX/yyyyyyy5/sr3_26/sr3.data26
> input datafile file number=00031 name=/oracle/XXX/yyyyyyy3/sr3_22/sr3.data22
> input datafile file number=00029 name=/oracle/XXX/yyyyyyy2/sr3usr_1/sr3usr.data1
> input datafile file number=00026 name=/oracle/XXX/yyyyyyy2/sr3700_2/sr3700.data2
> input datafile file number=00030 name=/oracle/XXX/yyyyyyy2/vertex/vertex.data1
> input datafile file number=00027 name=/oracle/XXX/yyyyyyy2/sr3fact_1/sr3fact.data1
> input datafile file number=00028 name=/oracle/XXX/yyyyyyy2/sr3ods_1/sr3ods.data1
> input datafile file number=00036 name=/oracle/XXX/yyyyyyy5/sr3_27/sr3.data27
> input datafile file number=00032 name=/oracle/XXX/yyyyyyy5/sr3_23/sr3.data23
> input datafile file number=00033 name=/oracle/XXX/yyyyyyy5/sr3_24/sr3.data24
> channel c2: starting piece 1 at 15-FEB-20
> channel c3: starting full datafile backup set
> channel c3: specifying datafile(s) in backup set
> input datafile file number=00013 name=/oracle/XXX/yyyyyyy5/sr3_10/sr3.data10
> input datafile file number=00004 name=/oracle/XXX/yyyyyyy1/sr3_1/sr3.data1
> input datafile file number=00005 name=/oracle/XXX/yyyyyyy2/sr3_2/sr3.data2
> input datafile file number=00007 name=/oracle/XXX/yyyyyyy4/sr3_4/sr3.data4
> channel c3: starting piece 1 at 15-FEB-20
> channel c4: starting full datafile backup set
> channel c4: specifying datafile(s) in backup set
> input datafile file number=00018 name=/oracle/XXX/yyyyyyy5/sr3_15/sr3.data15
> input datafile file number=00009 name=/oracle/XXX/yyyyyyy1/sr3_6/sr3.data6
> input datafile file number=00006 name=/oracle/XXX/yyyyyyy3/sr3_3/sr3.data3
> input datafile file number=00010 name=/oracle/XXX/yyyyyyy2/sr3_7/sr3.data7
> channel c4: starting piece 1 at 15-FEB-20
> channel c3: finished piece 1 at 16-FEB-20
> piece handle=/backup_new/YYY_Backups/xxxxxxxxxxxxx/XXX/rman/XXX_20200215_35698_1_FULL tag=ORCL_FULL comment=NONE channel c3: backup set complete, elapsed time: 11:02:29
> channel c3: starting full datafile backup set
> channel c3: specifying datafile(s) in backup set
> input datafile file number=00023 name=/oracle/XXX/yyyyyyy5/sr3_20/sr3.data20
> input datafile file number=00012 name=/oracle/XXX/yyyyyyy4/sr3_9/sr3.data9
> input datafile file number=00014 name=/oracle/XXX/yyyyyyy1/sr3_11/sr3.data11
> input datafile file number=00011 name=/oracle/XXX/yyyyyyy3/sr3_8/sr3.data8
> channel c3: starting piece 1 at 16-FEB-20
> channel c4: finished piece 1 at 16-FEB-20
> piece handle=/backup_new/YYY_Backups/xxxxxxxxxxxxx/XXX/rman/XXX_20200215_35699_1_FULL tag=ORCL_FULL comment=NONE channel c4: backup set complete, elapsed time: 11:08:38
> channel c4: starting full datafile backup set
> channel c4: specifying datafile(s) in backup set
> input datafile file number=00017 name=/oracle/XXX/yyyyyyy4/sr3_14/sr3.data14
> input datafile file number=00019 name=/oracle/XXX/yyyyyyy1/sr3_16/sr3.data16
> input datafile file number=00016 name=/oracle/XXX/yyyyyyy3/sr3_13/sr3.data13
> input datafile file number=00020 name=/oracle/XXX/yyyyyyy2/sr3_17/sr3.data17
> channel c4: starting piece 1 at 16-FEB-20
> channel c1: finished piece 1 at 16-FEB-20
> piece handle=/backup_new/YYY_Backups/xxxxxxxxxxxxx/XXX/rman/XXX_20200215_35696_1_FULL tag=ORCL_FULL comment=NONE channel c1: backup set complete, elapsed time: 20:00:10
> channel c1: starting full datafile backup set
> channel c1: specifying datafile(s) in backup set
> input datafile file number=00022 name=/oracle/XXX/yyyyyyy4/sr3_19/sr3.data19
> input datafile file number=00024 name=/oracle/XXX/yyyyyyy1/sr3_21/sr3.data21
> input datafile file number=00021 name=/oracle/XXX/yyyyyyy3/sr3_18/sr3.data18
> channel c1: starting piece 1 at 16-FEB-20
> channel c2: finished piece 1 at 16-FEB-20
> piece handle=/backup_new/YYY_Backups/xxxxxxxxxxxxx/XXX/rman/XXX_20200215_35697_1_FULL tag=ORCL_FULL comment=NONE channel c2: backup set complete, elapsed time: 20:19:31
> channel c2: starting full datafile backup set
> channel c2: specifying datafile(s) in backup set
> including current control file in backup set
> channel c2: starting piece 1 at 16-FEB-20
> channel c2: finished piece 1 at 16-FEB-20
> piece handle=/backup_new/YYY_Backups/xxxxxxxxxxxxx/XXX/rman/XXX_20200216_35703_1_FULL tag=ORCL_FULL comment=NONE channel c2: backup set complete, elapsed time: 00:00:35
> channel c2: starting full datafile backup set
> channel c2: specifying datafile(s) in backup set
> including current SPFILE in backup set
> channel c2: starting piece 1 at 16-FEB-20
> channel c2: finished piece 1 at 16-FEB-20
> piece handle=/backup_new/YYY_Backups/xxxxxxxxxxxxx/XXX/rman/XXX_20200216_35704_1_FULL tag=ORCL_FULL comment=NONE channel c2: backup set complete, elapsed time: 00:00:45
> channel c3: finished piece 1 at 16-FEB-20
> piece handle=/backup_new/YYY_Backups/xxxxxxxxxxxxx/XXX/rman/XXX_20200216_35700_1_FULL tag=ORCL_FULL comment=NONE channel c3: backup set complete, elapsed time: 09:34:04
> channel c4: finished piece 1 at 16-FEB-20
> piece handle=/backup_new/YYY_Backups/xxxxxxxxxxxxx/XXX/rman/XXX_20200216_35701_1_FULL tag=ORCL_FULL comment=NONE channel c4: backup set complete, elapsed time: 09:33:36
> channel c1: finished piece 1 at 16-FEB-20
> piece handle=/backup_new/YYY_Backups/xxxxxxxxxxxxx/XXX/rman/XXX_20200216_35702_1_FULL tag=ORCL_FULL comment=NONE channel c1: backup set complete, elapsed time: 02:54:09
> Finished backup at 16-FEB-20
>
> Starting backup at 16-FEB-20
> current log archived
> channel c1: starting archived log backup set
> channel c1: specifying archived log(s) in backup set
> input archived log thread=1 sequence=37974 RECID=18955 STAMP=1032496773
> channel c1: starting piece 1 at 16-FEB-20
> channel c2: starting archived log backup set
> channel c2: specifying archived log(s) in backup set
> input archived log thread=1 sequence=37975 RECID=18956 STAMP=1032532861
> channel c2: starting piece 1 at 16-FEB-20
> channel c3: starting archived log backup set
> channel c3: specifying archived log(s) in backup set
> input archived log thread=1 sequence=37976 RECID=18957 STAMP=1032548784
> channel c3: starting piece 1 at 16-FEB-20
> channel c1: finished piece 1 at 16-FEB-20
> piece handle=/oracle/XXX/oraflash/XXX/backupset/2020_02_16/o1_mf_annnn_TAG20200216T192139_h4m5l6cj_.bkp tag=TAG20200216T 192139 comment=NONE
> channel c1: backup set complete, elapsed time: 00:00:03
> channel c2: finished piece 1 at 16-FEB-20
> piece handle=/oracle/XXX/oraflash/XXX/backupset/2020_02_16/o1_mf_annnn_TAG20200216T192139_h4m5l6f5_.bkp tag=TAG20200216T 192139 comment=NONE
> channel c2: backup set complete, elapsed time: 00:00:03
> channel c3: finished piece 1 at 16-FEB-20
> piece handle=/oracle/XXX/oraflash/XXX/backupset/2020_02_16/o1_mf_annnn_TAG20200216T192139_h4m5l7sx_.bkp tag=TAG20200216T 192139 comment=NONE
> channel c3: backup set complete, elapsed time: 00:00:03
> Finished backup at 16-FEB-20
>
> Starting backup at 16-FEB-20
> channel c1: starting full datafile backup set
> channel c1: specifying datafile(s) in backup set
> including current control file in backup set
> channel c1: starting piece 1 at 16-FEB-20
> channel c1: finished piece 1 at 16-FEB-20
> piece handle=/backup_new/YYY_Backups/xxxxxxxxxxxxx/XXX/rman/XXX_20200216_35708_1_CONTROL tag=ORCL_CONTROL comment=NONE channel c1: backup set complete, elapsed time: 00:00:01
> Finished backup at 16-FEB-20
>
> RMAN retention policy will be applied to the command
> RMAN retention policy is set to recovery window of 4 days
> Deleting the following obsolete backups and copies:
> Type Key Completion Time Filename/Handle
> -------------------- ------ ------------------ --------------------
> Control File Copy 24619 22-FEB-18 /oracle/XXX/YYYreorg/sexwtcxc/cntrlXXX.old
> Control File Copy 24620 22-FEB-18 /oracle/XXX/YYYreorg/sexwtcxc/cntrlXXX.new
> Control File Copy 24621 22-FEB-18 /oracle/XXX/YYYreorg/sexwtnsl/cntrlXXX.old
> Control File Copy 24622 22-FEB-18 /oracle/XXX/YYYreorg/sexwtnsl/cntrlXXX.new
> Control File Copy 24623 22-FEB-18 /oracle/XXX/YYYreorg/sexwtthh/cntrlXXX.old
> Control File Copy 24624 22-FEB-18 /oracle/XXX/YYYreorg/sexwtthh/cntrlXXX.new
> Control File Copy 24625 22-FEB-18 /oracle/XXX/YYYreorg/sexwttjx/cntrlXXX.old
> Control File Copy 24626 22-FEB-18 /oracle/XXX/YYYreorg/sexwttjx/cntrlXXX.new
> Control File Copy 24627 22-FEB-18 /oracle/XXX/YYYreorg/sexwuasu/cntrlXXX.old
> Control File Copy 24628 22-FEB-18 /oracle/XXX/YYYreorg/sexwuasu/cntrlXXX.new
> Control File Copy 24629 23-FEB-18 /oracle/XXX/YYYreorg/sexwuqtu/cntrlXXX.old
> Control File Copy 24630 23-FEB-18 /oracle/XXX/YYYreorg/sexwuqtu/cntrlXXX.new
> Control File Copy 24631 08-MAR-18 /oracle/XXX/YYYreorg/sexzjthw/cntrlXXX.old
> Control File Copy 24632 08-MAR-18 /oracle/XXX/YYYreorg/sexzjthw/cntrlXXX.new
> Control File Copy 24633 11-MAY-18 /tmp/control01.ctl
> Control File Copy 24634 14-MAY-18 /oracle/XXX/112_64/dbs/snapcf_XXX.f
> Control File Copy 24635 22-APR-19 /oracle/XXX/YYYreorg/sfaywtzs/cntrlXXX.old
> Control File Copy 24636 22-APR-19 /oracle/XXX/YYYreorg/sfaywtzs/cntrlXXX.new
> Control File Copy 24637 22-APR-19 /oracle/XXX/YYYreorg/sfaywukz/cntrlXXX.old
> Control File Copy 24638 22-APR-19 /oracle/XXX/YYYreorg/sfaywukz/cntrlXXX.new
> Control File Copy 24639 26-SEP-19 /oracle/XXX/YYYbackup/cntrlXXX.dbf
> Backup Set 3276340 02-FEB-20
> Backup Piece 3276351 02-FEB-20 /backup_new/YYY_Backups/xxxxxxxxxxxxx/XXX/rman/XXX_20200202_35669_1_FULL deleted backup piece
> backup piece handle=/backup_new/YYY_Backups/xxxxxxxxxxxxx/XXX/rman/XXX_20200202_35669_1_FULL RECID=23483 STAMP=103132361 4
> Deleted 1 objects
>
>
> RMAN-06207: WARNING: 21 objects could not be deleted for DISK channel(s) due
> RMAN-06208: to mismatched status. Use CROSSCHECK command to fix status
> RMAN-06210: List of Mismatched objects
> RMAN-06211: ==========================
> RMAN-06212: Object Type Filename/Handle
> RMAN-06213: --------------- ---------------------------------------------------
> RMAN-06214: Datafile Copy /oracle/XXX/YYYreorg/sexwtcxc/cntrlXXX.old
> RMAN-06214: Datafile Copy /oracle/XXX/YYYreorg/sexwtcxc/cntrlXXX.new
> RMAN-06214: Datafile Copy /oracle/XXX/YYYreorg/sexwtnsl/cntrlXXX.old
> RMAN-06214: Datafile Copy /oracle/XXX/YYYreorg/sexwtnsl/cntrlXXX.new
> RMAN-06214: Datafile Copy /oracle/XXX/YYYreorg/sexwtthh/cntrlXXX.old
> RMAN-06214: Datafile Copy /oracle/XXX/YYYreorg/sexwtthh/cntrlXXX.new
> RMAN-06214: Datafile Copy /oracle/XXX/YYYreorg/sexwttjx/cntrlXXX.old
> RMAN-06214: Datafile Copy /oracle/XXX/YYYreorg/sexwttjx/cntrlXXX.new
> RMAN-06214: Datafile Copy /oracle/XXX/YYYreorg/sexwuasu/cntrlXXX.old
> RMAN-06214: Datafile Copy /oracle/XXX/YYYreorg/sexwuasu/cntrlXXX.new
> RMAN-06214: Datafile Copy /oracle/XXX/YYYreorg/sexwuqtu/cntrlXXX.old
> RMAN-06214: Datafile Copy /oracle/XXX/YYYreorg/sexwuqtu/cntrlXXX.new
> RMAN-06214: Datafile Copy /oracle/XXX/YYYreorg/sexzjthw/cntrlXXX.old
> RMAN-06214: Datafile Copy /oracle/XXX/YYYreorg/sexzjthw/cntrlXXX.new
> RMAN-06214: Datafile Copy /tmp/control01.ctl
> RMAN-06214: Datafile Copy /oracle/XXX/112_64/dbs/snapcf_XXX.f
> RMAN-06214: Datafile Copy /oracle/XXX/YYYreorg/sfaywtzs/cntrlXXX.old
> RMAN-06214: Datafile Copy /oracle/XXX/YYYreorg/sfaywtzs/cntrlXXX.new
> RMAN-06214: Datafile Copy /oracle/XXX/YYYreorg/sfaywukz/cntrlXXX.old
> RMAN-06214: Datafile Copy /oracle/XXX/YYYreorg/sfaywukz/cntrlXXX.new
> RMAN-06214: Datafile Copy /oracle/XXX/YYYbackup/cntrlXXX.dbf
>
>
> released channel: c1
>
> released channel: c2
>
> released channel: c3
>
> released channel: c4
>
> Recovery Manager complete.
>

>> On Sun, Feb 23, 2020 at 9:15 PM Mladen Gogala <gogala.mladen_at_gmail.com> wrote:
>> BR*Tools do leave a log file and have several methods. One of them is UTL_FILE, the other one is RMAN. UTL_FILE is basially, version 7 style backup of files with the database in the backup mode. Another brbackup method is RMAN, with some twists. BR*Tools can't utilize catalog. I wander what method is used by BR*Tools. BR*Tools, as opposed to RMAN, can also utilize snapshots. The phrase "SAP backup" doesn't mean much without the exact configuration of brbackup. BR*backup is also backing up the SAP configuration files, which are ignored by usual RMAN backups. SAP only certifies BR*Tools for SAP R3 backup. RMAN backup is not certified. There are many nuances here, and discussing BR*Tools without knowing the details is pointless. 
>> On 2/23/20 9:23 PM, Jack van Zanen wrote:
>>> First question: Can they prove it is your backup causing the Performance issue. You may be on a wild goose chase
>>> 
>>> Even SAP backups most likely leave a log file behind somewhere that should tell you what the SAP backup is doing (is it actually making a backup?) . Don't they use RMAN under the hood anyway?
>>> 
>>> Regards
>>> 
>>> Jack van Zanen
>>> 
>>> 
>>> ------------------------- 
>>> This e-mail and any attachments may contain confidential material for the sole use of the intended recipient. If you are not the intended recipient, please be aware that any disclosure, copying, distribution or use of this e-mail or any attachment is prohibited. If you have received this e-mail in error, please contact the sender and delete all copies.
>>> Thank you for your cooperation
>>> 
>>> 
>>> On Sat, Feb 22, 2020 at 6:22 AM Sandra Becker <sbecker6925_at_gmail.com> wrote:
>>>> Oracle EE v11.2
>>>> 
>>>> The Basis admin from another team has asked if I can help him find out why RMAN backups of his SAP database cause severe performance issues in the database with only two channels. Yet the SAP backup method runs with 6 parallel processes in about 4-5 hours. I know nothing about how the SAP backups are configured and don't have access to any of that information, so I'm not sure you'll be able to provide much help to us. I do know the following:
>>>> they don't use ASM
>>>> all files are on the same NFS mount, including the datafiles, binaries, logs, audit files, etc.
>>>> archivelogs are kept for 3 days and written to another NFS mounted drive
>>>> SAP backup method uses 6 channels, backup completes in 4-5 hours
>>>> RMAN backup was set for 2 channels, backup tool over 12 hours and caused significant performance degradation (so I was told, I can't prove it)
>>>> Any suggestions on what they should look at to see what's going on or adjustments they should look into? I've looked at their RMAN configuration and it's actually pretty close to what I use in my production databases, just minor differences for path names and the like.
>>>> 
>>>> -- 
>>>> Sandy B.
>>>> 
>> -- 
>> Mladen Gogala
>> Database Consultant
>> Tel: (347) 321-1217

>
>
>
> --
> Sandy B.
>
--
http://www.freelists.org/webpage/oracle-l
Received on Mon Feb 24 2020 - 19:14:02 CET

Original text of this message