Redo Log in Oracle RAC 11G

Similar Questions

• How do I know the delay in the redo log apply on Active 11g Dataguard

  Hi all
  
  How do I know the delay in the redo log apply on Active Dataguard 11 g...
  
  Do we need to wait until the log switch occurs?
  
  Or is it recommended to provide a switch to log every 15 min, regardless of data is updated / inserted in primary school or not?
  
  Please suggest...
  
  Oracle: oracle 11g Release 2
  OS: RHEL 5.4
  
  Thank you
  
  Published by: user1687821 on February 23, 2012 12:02

  apply for time of arrival + 00 00:00:00.0 day (2) to second (1) interval February 23, 2012 03:02:16

  Here apply finish time is 'Zéro' if there are gaps in log files, this parameter shows the time it will take to resolve the discrepancy.

  apply the offset + 00 01:50:49 day (2) second (0) interval February 23, 2012 03:02:16
  transportation of shift + 00 01:50:49 day (2) second (0) interval February 23, 2012 03:02:16

  the time that redo data is not available (or) on the basis of data behind pending with the primary database.

  SQL >! date
  Thu Feb 23 03:03:34 CST 2012

  If you see your date system current and last does the end is not even a second. So probably there is no delay I would say.
  You can test by setting the timeout setting in log_archive_dest_2 (or) disable log_archive_Dest_2 for a while do two or three switches of newspaper and made attention to discrepancies between primary & eve and how does it point of view.

• Adding more large size Redo log groups in RAC, ASM

  Hi people,
  
  Version of database - 10.1.0.4.0
  Version of the OS - AIX 5.3
  Node 2 RAC and ASM
  
  We had 4 groups of log roll forward of any size on the two nodes.yesterday, I added 4 new larger size groups using pl/sql developer tool and deleted the old 2 redolog groups. But I'm not able to remove the rest of the 2 groups of old.
  
  ORA-01567 a log2 fall would have less than 2 log files for example 1.
  
  Our redolog files are the SAN and the two points of the same storage node. When I pulled this command line query
  
  SELECT v$ logfile.member, v$ logfile.group #, v$ log.status, v$ log.bytes
  V $ log v$ logfile
  WHERE v$ log.group # v = $logfile.group #;
  
  I had the same result for both nodes.
  
  The problem that I think, is that all 4 new newspaper groups are added to instance 2 and its old 2 grouips are are also deleted.
  
  
  Now my question is that:
  
  1 should I I added groups of redo log separately on the two nodes of storage is the same for both nodes?
  2 redologs groups are defined separately for each node?
  
  How can I assign 2 new groups of newspapers to instantiate redo 1?
  
  Kind regards

  Redo log group should minus 2 groups each of the thread.
  But it is good to use 3 groups... each of the threads.

  and 2 members on each of the groups.

  all redo check journal... from v$ session, v$ logfile, v$ archvied_log

  If you mean the idea to determine approximately the size of the log to roll forward... you can check newspaper alerts.

  or

  ALTER session set nls_date_format = "YYYY/MM/DD HH24:MI:SS;
  Select INST_ID select, name, control gv completion_time $ archived_log by 3.1.

  Good luck

• Sun Cluster 3.2u3 (11/09) and Oracle RAC 11g R2 compatibility

  Hi all
  
  I am facing a problem when integrating 3.2u3 Sun Cluster with RAC Oracle 11 g R2.
  
  I installed 10u8 Sun Solaris on Sun SPARC M5000 02 servers. These two servers have already installed Sun Cluster 3.2u3, almost resource for RAC groups have also been set up. (Except for the Framework CRS resource and database resources Proxy).
  
  After installing and configuring RAC Oracle 11g R2, I tried to integrate it with Sun Cluster with the utility 'clsetup '.
  
  At the start of the utility run commands to create new resources, I pointed out that this process has failed, the output is:
  
  -------------------------
  > Check the Configuration of the Oracle database resources
  >
  > The following configuration of Sun Cluster will be created.
  >
  >
  > To view details for an option, select the option.
  >
  > Name value
  > ==== =====
  > 1) CRS Framework Resource N... crs_framework-rs
  > 2) resource Framework RAC G... cars-framework-rg
  > 3) database Proxy resource... rac_server_proxy-rs
  > 4) database Proxy resource... rac_server_proxy-rg
  > 5) node list bltp-db1, db2-Clint
  > 6) oracle CRS Home/u01/grid
  > 7) CRS OCR and voting disks /ocr, / vote
  Bltp > 8 oracle database name)
  > 9) oracle Home/u01/oracle/db
  > 10) oracle SID oracle_sid {bltp-db1} = pttb1, oracle_s...
  >
  (> c) create a Configuration
  (> q) Quit
  (>?) Help
  >
  > Option: c
  >
  > * Orders running Sun Cluster... | 14 Jul 10:01:20 bltp-db1 SC [SUNW.crs_framework.crs_framework_validate]: error: shutdown The Oracle CRS script > "" / etc/init.d/init.crs "is missing.*_"
  > / 14 Jul 10:01:20 Cluster.RGM.global.rgmd bltp-db1: VALIDATE failed on resource < crs_framework-r >, < rac-framework-rg >, a group resources time used: 0% to > < 300 seconds timeout >
  >
  >
  > View results
  >
  >
  > ERROR: the following error occurred during the creation of the
  > configuration
  >
  > clresource: Clint-db1 - error: Stop The Oracle CRS script "/ etc/init."
  ' > d/init.crs ' is missing.
  >
  > clresource: (C189917) VALIDATE crs_framework-r, resource group resource
  > rac-framework-rg, came out with the nonzero exit status.
  > clresource: (C720144) crs_framework-r resources resources Validation
  > Group rac-framework-rg on the bltp-db1 node failed.
  > clresource: (C891200) cannot create resources "crs_framework r".
  >
  >
  >
  > ERROR: nonzero exit status
  >
  > the following Sun Cluster commands have been executed
  >
  > Configuration commands...
  >
  >
  > / usr/cluster/bin/clresourcegroup online - emM rac-framework-rg
  >
  > / usr/cluster/bin/clresourcetype register SUNW.crs_framework:2
  >
  > create a/usr/cluster/bin/clresource t SUNW.crs_framework:2 g rac-framework-rg - p
  > Resource_dependencies = rac-framework-r - p resource_dependencies_offline_restart = scal-
  > ocr - r {local_node}, scal-vote-r {local_node} crs_framework-rs
  >
  >
  > Configuration of resources for Oracle 10 g R2 or 11g Real Application Clusters
  > database instances failed.
  -------------------------
  
  I think that this error is is produced due to some scripts to the CCR of Oracle 11 g R2 have been changed in the content and location.
  
  So my question is: 3.2u3 work can Sun Cluster with Oracle 11g R2 RAC?
  
  Please help me to have a response in this case.
  
  Thank you very much
  
  HuyNQ.

  What I read Sun Cluster 3.2 is not supported with RAC 11 g R2 up to this time of September.
  The feature will be available via a patch of the cluster database.

  Sun Cluster is currently looking into /etc/init.d/init.crs to start the CRS (11g R1). With 11g R2, the startup for the GRID script is now etc/init.d/ohasd.

  SC supports HA 11 g R2, but not of CARS at the moment.

• No clarity about the location of archive logs in Oracle database 11g

  I have this request which I am not able to solve. There is a location of the log archiving mentioned as /oraarch/app/oracle/oradata/snlprod/archive_logs/in the parameter log_archive_dest_1. But the archive logs appear in another location/orabackup/rman/snlprod/archive_logs. I wonder how the archive logs show at this location, / orabackup/rman/snlprod/archive_logs.

  
  

  I assume that there is only one way in what place can be given which is seen availability-> restore settings-> Media Recovery.

  
  

  Hopefully, my question is clear.

  
  

  Please get back with the answer to my query.

  
  

  Concerning

  Check the location of the archive log backup in the script. What is /orabackup/rman/snlprod/archive_logs.

• ORACLE_HOME in Oracle RAC 11g (Windows Server 2008)

  Hello
  
  I've got 2 two nodes in a RAC Oracle 11 g in Windows Server 2008. Oracle software is installed in directory.
  
  I realized that it has not been set ORACLE_HOME path. In the properties-> advanced-> Environment Variables, I see that ORACLE_HOME is empty.
  
  -Which way would be the ORACLE_HOME: C:\app\bd\product\11.2.0\dbhome_1
  -You have set up the same in the two nodes?
  
  Thank you

  I realized that it has not been set ORACLE_HOME path. In system-> Advanced-> Environment Variables properties, I see that ORACLE_HOME is empty.

  its normal behavior

  -Which way would be the ORACLE_HOME: C:\app\bd\product\11.2.0\dbhome_1

  If you have installed this location, Yes

  -You have set up the same in the two nodes?

  in fact, you don't have HAVE to, its not need at all

• Oracle RAC 11g R2. Node pinned or this marking?

  Hi all, I am working with Oracle Clusterware & RAC 11 g R2.
  As this is my first time, I really don't understand what is the meanning of pinning or unpin a node.
  Can someone help me please?
  
  Thanks in advance!

  11.2 RAC deployment guide

  Pin a node means the association of a name with a number of node node is fixed. If a node is not pinned, its node number can change if the lease expires while it's down. The lease of a pinned node never expires.

  Given that your installation is a clean installation (no previous installation made), you don't need to pin the nodes, it would be by oracle clusterware.

  HTH
  Aman...

• Will be database Oracle 10 g / 11g run without redo logs?

  I was asked in an interview with tech:
  
  What is an Oracle Database 10 g / 11g continue to run if someone or something corrupt any of its redo logs?
  
  I believe that the answer is Yes.
  
  I tested the removal of all newspapers of redo of an Oracle 11.1.0.7 running database, and I was still able to create a new table, perform an insertion and validation.
  
  When I stop and restart the database however, of course, he complained lack of recovery logs.
  
  Assuming that never stop you the database, the database continues to function without error, without no redo logs?
  
  Is the database from functioning normally without redo logs? Are newspapers in recovery in the event of failure of the user, instance or media, and recover from these situations?
  
  The documentation I've read does not address what happens if corrupt you recovery logs but more data files in the case of media/disk failures.
  
  MetaLink notes or documents or first hand experience would be appreciated.
  
  Snake

  In fact, you are right, and the captain himself, Oracle Database 10 g / 11 g will not run if all is redo logs have been deleted or corrupted by all means. Play well!

• Redo command of journal online in Oracle RAC

  Dear,

  If I have 2 Oracle RAC nodes:

  Node 1:2 Online Redo log groups (Group 1 and group 2) - each Member of a group

  Node 2:2 Online Redo log groups (Group 3 and group 4) - each Member of a group

  Would like to know when the switch occurs on the redo log groups, it moves the Group 1 to group 2, then return in the Group 1... or

  Group 1 to group 2, and group 3?

  Concerning

  Claude

  Each Instance has a Thread.  So the Instance on node 1 has 1 wire that consists of groups 1 and 2.  Redo all written by instance of node 1 will always be to groups 1 and 2 only.  Never to groups 3 and 4 (except if they fell and added to 1 thread)

  Similarly, the instance on node 2 will write for groups 3 and 4 only.

  Hemant K Collette

• Question about how Oracle manages the Redo logs

  Hello
  
  Assuming a configuration which consists of 2 redo log groups (groups A and B), each group of 2 disks (disks A1 and A2 for Group A) and B1 and B2 disks for Group B. Additionally, assume that each redo log file resides by itself in a disk storage device and that the device is dedicated to her. So in the situation described above, there are 4 discs, one for each redo log file, and each disc contains nothing other than a redo log file. Also, assume that the database is in ARCHIVELOG mode and the files from archive is stored on another different set of devices.
  
  kind of graphically:
  

      GROUP A             GROUP B
  
        A1                  B1
        A2                  B2

  The question is: when the disks that make up the Group A are filled and Oracle switches to the disks in the Group B, can the group drives to take offline, perhaps even physically removed from the system if necessary without affecting the functioning of the database? Can the archiver process temporarily delayed until the disks (which have been removed) are presented online or is the DBA have to wait until the end of the process to archive a copy of the redo log file creating in archive?
  
  Thank you for your help,
  
  John.

  Hello
  A journal of the groups fall

  To remove a group of online redo logs, you must have the ALTER DATABASE system privilege. Before you delete a line redo log group, consider the following precautions and restrictions:

  * An instance requires at least two groups of files logging online, regardless of the number of members in the groups. (A group is one or more members.)
  * You can delete a group of newspapers online redo only if it is inactive. If you need to drop the current group, first force a log switch occurs.
  * Make sure a group of online redo logs is archived (if archiving is enabled) before dropping. To see if this happens, use the view LOG V$.

  SELECT GROUP #, ARCHIVED, STATUS FROM V$ LOG;

  GROUP # ARC STATUS
  --------- --- ----------------
  1 ACTIVE YES
  2. NO CURRENT
  3 INACTIVE YES
  4 INACTIVE YES

  Delete a group of newspapers online redo with the SQL ALTER DATABASE statement with the DROP LOGFILE clause.

  The following statement drops redo log group number 3:

  ALTER DATABASE, DROP LOGFILE GROUP 3;

  When a group of online redo logs is deleted from the database, and you do not use Oracle managed files, operating system files are not removed from the disk. Instead, control of the associated database files are updated to remove members of the Group of the database structure. After deleting a group of online redo logs, make sure the drop completed successfully and then use the command of operating system appropriate to delete the dropped online redo log files.

  When you work with files managed by Oracle, the cleaning of operating system files is done automatically for you.
  Your database will not be affected as you can work with 2 files, redo log in each group, as the minimum number of redo log in a database file is two because the process LGWR (newspaper writer) writes in the redo log in a circular way. If the process crashes because you have 2 groups only if you want to remove 1 Add a third and make that the current group and remove the one you want to be offline.

  Please refer to:
  http://download.Oracle.com/docs/CD/B10500_01/server.920/a96521/onlineredo.htm#7438
  Kind regards
  Mohamed
  Oracle DBA

• Redo Logs after duplication 3 RAC node to node 2 RAC

  I use RMAN to clone my production database 10.2.0.4 (3 node RAC) in my test database (2 node RAC). When I finished, I find myself with the Redo Logs from the 3rd node RAC in a State of "weird." Newspapers of recovery for "thread 3", which does not exist, cause no problem, I want to clean them and reclaim the space.
  
  Ideas or suggestions?
  
  Thank you!

  Have you tried: -.

  ALTER DATABASE DISABLE THREAD 3.

• where can I get the software for oracle database 11g RAC installion

  pls can someone tell me where to download the installation software for oracle database 11g RAC with Yes which has the option of installing RAC database on, I the installation of database 11g software, but it does not include the installation of database RAC inside option, I heard someone say that the installer of oracle database 11g in oracle's Web site is not used to install a RAC database is it true? If that's how to make one that installs the RAC DATABASE.

  Download page:
  http://www.Oracle.com/technology/software/products/database/Oracle11g/111060_linuxsoft.html

  -Oracle Database 11 g Release 1 (11.1.0.6.0) for Linux x 86
  linux_11gR1_database_1013.zip (1,844,527,800 bytes) (cksum - 1044354138)

  -Oracle Clusterware 11 g Release 1 (11.1.0.6.0) for Linux x 86
  linux_x86_11gR1_clusterware.zip (244,660,141 bytes) (cksum - 820583335)

  Maybe you need to download is: Clusterware Oracle 11 g

  Document: Oracle® database 2 day + Real Application Clusters guide 11 g Release 1 (11.1)
  http://download.Oracle.com/docs/CD/B28359_01/RAC.111/b28252/TOC.htm

• in oracle redo-log, QMD means fast Multi delete, but what do I do to generate such redo log?

  to QMI(Quick multi-insert), I can run the following SQL to generate the QMI redo log:

  Insert into t1 select * from t2;

  or use forall sentence to achieve this goal.

  but I do not know how to generate log redo QMD, can someone help me?

  Hello

  When I restore after an insert... Select I get the following type of repeat folder:

  PROGRESS RECORD roll - Threading: 1 RBA: LEN 0x000e78.00005fb5.00cc: 0x00e8 VLD: 0x01 CON_UID: 0

  RCS: 0x0000.0b8cc83a SUBSCN: 1 08/12/2015 23:07:08

  CHANGE CON_ID:0 #1 TYP:0 CLS:1 AFN: 6 x 0000 .0b8cc837 SEQ:4 OP:11.12 ENC:0 SCN:0 OBJ:116277 DBA:0x018264c2 RBL: 0 FLG:0 X 0000

  KTB Redo

  OP: worm 0 x 02: 0 x 01

  compat bit: 4 (post-11) stuffing: 1

  OP: C uba: 0x01001a86.0d68.0c

  Op KDO code: line QMD disabled dependencies

  xType: XR flags: 0 x 00000000 bdba: hdba 0x018264c2: 0 x 01825972

  itli: 1 ispac: 0 maxfr: 4858

  Tabn: 0 lock: nrow equals 0: 16

  location [0]: 54

  location [1]: 55

  slot [2]: 56

  slot [3]: 57

  Housing [4]: 58

  Housing [5]: 59

  Housing [6]: 60

  slot [7]: 61

  slot [8]: 62

  Housing [9]: 63

  slot [10]: 64

  slot [11]: 65

  Housing [12]: 66

  slot [13]: 67

  slot [14]: 68

  slot [15]: 69

  CHANGE CON_ID:0 #2 TYP:0 CLS:24 AFN: 4 x 0000 .0b8cc83a SEQ:13 OP:5.6 ENC:0 SCN:0 OBJ:4294967295 DBA:0x01001a86 RBL: 0 FLG:0 X 0000

  ktubu again: am: rci 0: 12 opc: 11.1 objn: 116277 objd: tsn 116277: 4

  Cancel type: Regular cancel cancel type: user cancellation made last buffer split: No.

  Undo tablespace: No.

  0x00000000

  ktuxvoff: 0x17cc ktuxvflg: 0x0002

  Kind regards

  Franck.

  PS: this is the replication product that I think?

• Configuration of DNS for the ANALYSIS used with Oracle Database 11g Release 2 RAC

  Hi gurus,
  
  I am on how to install oracle RAC 11 g 2, ANALYSIS required for installation, but I do not know how to configure the SCAN with DNS. Have a guide/note/document setup to install DNS configuration for ANALYSIS, can help me to overcome installation CARS with SCAN (single Client access name)
  
  Please don't bother me on my English terible
  
  So thank you
  Ch

  There are a lot of useful documents on the net:

  http://www.Oracle.com/technetwork/database/clustering/overview/scan-129069.PDF

  http://wiki.Oracle.com/page/Oracle+RAC11g+R2+single+client+access+name-+scan

  http://www.garrettseibt.com/database/?p=208

  Best regards

  Gokhan Atil

  -------------------------------------------------------
  If you answer this question, please mark appropriate as correct/useful messages and the thread as closed. Thank you

• Bandwidth of the network for the redo log switches

  Hi all

  I'm using Oracle 11 g R2, I want to clarify the necessary bandwidth of my primary site to the secondary site (using Oracle Data guard)

  My database is an Oracle RAC 2 nodes each node has a log size to 2 GB again. listen to this file in operation every 5 minutes. It means that I'm spending a 2 GB redo log file every 5 minutes from each node. This means that 4 GB in total every 5 minutes.

  I'm planing to set up Oracle Dataguard in maximum performance mode. Is that mean I need a link between the primary and secondary site that is able to transfer files of 2 GB + 2 GB every 5 minutes?

  I do the calculation below and need your advice:

  4 GB / (5x60s) = 13981 KByte/s

  This means that I need to link to 13981x8bites/s = 111, 848Kbit/s?

  Is the above correct? your advice please

  Kind regards

  Please check below two

  http://www.Oracle.com/au/products/database/MAA-WP-10gR2-dataguardnetworkbestpr-134557.PDF

  How to calculate bandwidth transfer network required recovery in care of data (Doc ID 736755.1)