Replication happens across the servers to make sure that the data is the same (synchronized). If one of the server crashes and later recovers, does it need to repair the data to keep them in sync with the other servers?
View 4 RepliesSuppose, we have one main database on one side(say A) and an external system on the other side(say C). Midway, we have one more staging database(say B).Lets take, we have one record related to Bank Information both in database A and database B and the following activites are performed.
1) "Bank Name" column in database B is updated by the external system C.
When this Bank Name is updated in database B by external system C, we need to update the value of this field in database A.
2) Suppose couple of days later, the Bank phone number of the same bank record is updated in main database A and the same update needs to be reflected in staging database B.
How can we take care of both these activities of data-synchronization. What are the different approaches we can take? FYI, we are on oracle 10g rel2 and Windows OS.
I want to replicate an Oracle instance from one Server to another one. On server 1 Oracle is running with instance TEST02 in archive mode. I have to backup this instance while it is running active and in use by multiple users working in our ERP-System. Now I want to backup alle stuff I need (database, archivelogs, rodlogs?) into another instance TEST03 running on another Server to have a fallback solution. This backup I would like to repeat every 2 hours to have always a copy of Server 1 TEST02 on Server 2 TEST03
Any script how to do this Job(s)? (I know how to connect to instance by *.bat but in internet I did not find the useful statement(s) how to backup / recover the complete instance.
how to check dataguard synchronization?
View 2 Replies View RelatedI have an oracle autoback of controlfile and spfile. I am trying to restore the production database using this backup, into a new server with a different directory structure.
I have completed the following steps in the restore process.
1. Creating a pfile from spfile
2. Changing the the location of cdump, udump, bdump and the control files ( there are three )
3. Then creating a spfile from this pfile
I am stuck on the next step where to rename all the datafiles and tempfile and restore the database. Following is what I did.
After mounting the database in RMAN, tried to run the following.
RMAN> run
2> {
3> allocate channel c1 device type disk
4> ;
5> @/home/oracle/rman_scripts/newloc.rman
6> SET NEWNAME FOR DATAFILE 1 TO '/u02/oradata/dorian/system01.dbf';
7> SET NEWNAME FOR DATAFILE 2 TO '/u02/oradata/dorian/undotbs01.dbf';
8> SET NEWNAME FOR DATAFILE 3 TO '/u02/oradata/dorian/sysaux01.dbf';
9> SET NEWNAME FOR DATAFILE 4 TO '/u02/oradata/dorian/users01.dbf';
[code]....
I am getting the following error message.
Starting restore at 25-JAN-2012 21:26:48
released channel: c1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of restore command at 01/25/2012 21:26:49
RMAN-06026: some targets not found - aborting restore
RMAN-06100: no channel to restore a backup or copy of datafile 30
RMAN-06100: no channel to restore a backup or copy of datafile 29
RMAN-06100: no channel to restore a backup or copy of datafile 28
[code]....
We are using HP data Protector as oracle database backup tools.but we are facing below error. But we are able to login to the database through same user.
BR0301E SQL error -1033 at location BrDbConnect-2, SQL statement:
'CONNECT system/********'
ORA-01033: ORACLE initialization or shutdown in progress
BR0310E Connect to database instance ARP failed
We are trying to restore a database on the different server using RAM incremental level 0 and 1 backups. We have weekly Incremental level 0 backups along with incremental backups on daily basis. During recovery of Incremental level 0 backup, RMAN is expecting/looking for Incremental Level 0 backup of prior week as well. Is this the usual process for RMAN to look for prior level 0 backup though we need to restore from the current level 0 backup and roll forward by a week with subsequent Level 1 backup.?
We intend to restore from the Level 0 of 1/16 and roll forward with daily incrementals till 1/22. RMAN is expecting level 0 backupsets from 1/9 backup as well and keep failing since those backups are not available. quick inputs since we are in middle of recovery and trying to resolve if this is even doable.
db can only be opened if all the datafile and controlfiles are synchronize.I wonder if db crash and we dont have any kind of backup. is there some way to synchronize the control file with the datafile?....any way.db is not idle either when crashes we can manage data lose.just want our database open
View 1 Replies View RelatedMy server hard disc crashed yesterday and i don't have any backups.
I am able to recover the .dbf files by using a recovery tool.
is it possible to use this .dbf files into new server and recover my data.
Yesterday my colleague noticed that, the complete data (1 year) got missed out from a table and the data is available only from last friday.
And then we restroed the data from the backup.
Now we have been asked to find out who has deleted or truncated the data? But in the database, audit is enabled only to log sys operations.
So is there any way to find who ran the delete or truncate command on this DCA_CLA_BATCH table on friday?
SQL> show parameter audit
NAME TYPE VALUE
------------------------------------ -------------------------------- ------------------------------
audit_file_dest string /dborafiles/edcap/edcapd/adump
audit_sys_operations boolean TRUE
audit_syslog_level string
audit_trail string OS
Here is the details
[oracle@localhost dbs]$ export ORACLE_SID=stby
[oracle@localhost dbs]$ sqlplus '/as sysdba'
SQL*Plus: Release 10.2.0.1.0 - Production on Thu Oct 20 09:47:34 2011
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to an idle instance.
SQL> !
[oracle@localhost dbs]$ pwd
/oraeng/app/oracle/product/10.2.0/dbs
[oracle@localhost dbs]$ exit
exit
[code].....
I have problem on using "delete obsolete" in RMAN.
First, let describe my backup configuration.
1. Full backup every Monday (17-Oct, 10-Oct, 3-Oct, 26-Sep)
2. Incremental backup for other days
3. Enable autobackup of control file
4. Backup archive log every day
5. RETENTION POLICY TO RECOVERY WINDOW OF 30 DAYS
6. Execute "Delete obsolete" every day
7. control file is used instead of catalog
The results observed:
1. Backup of control files older than 30 days will be deleted
2. Backup of archive log files older than 30 days will be deleted.
3. Backup of datafiles older than ~14 days but before 30 days are also DELETED.
In my example, the backup of datafiles created at 26-Sep is deleted at 16-Oct.
I tried "restore database validate until time "sysdate-22"" at 17-Oct. And RMAN reported "datafile xx will be created automatically during restore operation". It seems that RMAN failed to do restoration up to 22 days ago. The retention policy I set seems not effective on datafile backups.
I checked view v$backup_set and the "Keep" is "No" and "Keep until" is empty.
The only thing I can think of, is the settings of "CONTROL_FILE_RECORD_KEEP_TIME". It is marked "7" in the Oracle, which is less than the retention. But I suppose this only causes the backup not deleted, but NOT be deleted earlier.
how to take backup and recover of oracle database and which method is best for to protect our data from lost
View 3 Replies View RelatedOur client has this scenario:May 23th 4:00 PM a user truncate a critical table. The customer need to recover the data before truncate.
The recover materials list like this:
1. A cold backup of this database at May 1th.
2. The archive log except May 1th ~ May 15th.
3. Every day exp at 00:30 and 12:00.
Is there any way to recover the data before truncate table with these material?
I am the only DBA in my company and Oracle just crashed on me. The data is corrupted as well as the data on my backup! Is there ANY way I can get the information back?
View 2 Replies View RelatedIt seems that Oracle does not use XOR to calculate the checksum of data blocks any more. What is the new checksum algorithm?
View 3 Replies View RelatedI am trying to backup my entire database's files :
[oracle@testing-oracle-1 ~]$ rman target /
Recovery Manager: Release 11.2.0.1.0 - Production on Mon Jun 24 16:09:54 2013
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
connected to target database: ORCL (DBID=1341263457)
RMAN> list backup;
using target database control file instead of recovery catalog specification does not match any backup in the repository
RMAN> CONFIGURE CONTROLFILE AUTOBACKUP ON;
new RMAN configuration parameters:
CONFIGURE CONTROLFILE AUTOBACKUP ON;
new RMAN configuration parameters are successfully stored
RMAN> CONFIGURE CONTROLFILE AUTOBACKUP FORMAT
FOR DEVICE TYPE DISK TO '/u01/app/oracle/backupsets/control_files/cf_%F.BCKP';2>
[code]....
I see that a backup set was created to "/u01/app/oracle/flash_recovery_area/ORCL/backupset/2013_06_24/" , in spite of my specification.
So I asked RMAN to list all the backups I have:
RMAN> list backup;
List of Backup Sets
===================
BS Key Size Device Type Elapsed Time Completion Time
------- ---------- ----------- ------------ ---------------
1 41.14M DISK 00:00:00 24-JUN-13
BP Key: 1 Status: AVAILABLE Compressed: NO Tag: TAG20130624T161025
Piece Name: /u01/app/oracle/backupsets/818957425_1_%r.BCKP
[code]....
Here I see that 4 backup sets have been created.The backup sets 1 & 3 containing the archived redo logs (818957425_1_%r.BCKP and 818957451_3_%r.BCKP) are placed as I wanted in /u01/app/oracle/backupsets/ dir.
The file containing the Control File and Spfile (cf_c-1341263457-20130624-00.BCKP) is placed as I wanted in /u01/app/oracle/backupsets/control_files/ dir.However, The backup set file containing the data files(o1_mf_nnnd0_TAG20130624T161026_8wjkb2tg_.bkp) is placed under the directory /u01/app/oracle/flash_recovery_area/ORCL/backupset/2013_06_24/ ,and I don't understand why.
When I backup my database without the archived redo logs - it is saved correctly:
RMAN>
RMAN> delete backup;
using channel ORA_DISK_1
List of Backup Pieces
BP Key BS Key Pc# Cp# Status Device Type Piece Name
[code]....
1. Why aren't my data files backed up to the location I specified when I backup using PLUS ARCHIVELOG syntax?
2. Why are my redo logs saved to two different backup sets and not just one?
3. Is there a way to combine backup of all files (data files, control file, spfile, redo logs & arch redo's) in one backup set, one file?
I want to take backup of selected data from tables of a schema (as huge data, that is not used, causing slow query performance) I planned to create a seprate backup schema and tablespace to store the data from these tables. Then write procedures that can move the data to and fro among table of those schema. And create partitioned index on those backup tables.
View 11 Replies View RelatedI have a 10G Express system running. I Have 2 tablespaces in production. WHen taking backup, it terminates unsuccessfully saying system01.dbf is damaged. The application works fine and no data loss is found through the application interface.
So can I shift the data to a new server using the dbf files of the tablespaces in use?
What i have to do for this error:
ORA-01578: ORACLE data block corrupted (file # 3, block # 42348)
ORA-01110: data file 3: '+DGMETA/metadb/datafile/sysaux.257.783871811'
Wed Nov 21 09:30:00 2012
Corrupt Block Found
TSN = 2, TSNAME = SYSAUX
RFN = 3, BLK = 42348, RDBA = 12625260
OBJN = 50439, OBJD = 50439, OBJECT = MGMT_STRING_METRIC_HISTORY_PK, SUB
OBJECT = SEGMENT OWNER = SYSMAN, SEGMENT TYPE = Index Segment
Database version is :- Oracle Database 10g Enterprise Edition Release 10.2.0.2.0 - 64bi
I delete some of the data from a table unfortunately and make commit on that on my production server.
getting back my all data of this table only of last 15 minutes.
We are facing block corruption error and it's refer to system datafile (SYSTEM01.DBF).Below is the script through it, we can come to know about the extent.
select segment_name, segment_type from dba_extents
where file_id=1 and 134144 between block_id and block_id+blocks-1;
select owner,index_name,index_type, table_name from dba_indexes
where index_name='I_CDEF3';
How to resolve the problem as it is related to system datafile? We tried to drop the index but system is not allowing to do.
ORA-00701 - object necessary for warmstarting database cannot be altered.
I have a database "BD001" for example, inside got 90 schemes, each one has two tablespaces, see below script I use to create:
CREATE TABLESPACE TS_F_ORA9_027_DAT NOLOGGING DATAFILE
'E: DataBases ORACLE 92 DAT TS_F_ORA9_027_DAT.ora' SIZE 5M REUSE ON AUTOEXTEND
NEXT 10240K MAXSIZE UNLIMITED EXTENT MANAGEMENT LOCAL SEGMENT SPACE MANAGEMENT
AUTO;
[code]....
I have the dmp this scheme "F_ORA9_027" but have no way to restore it onceI can not connect to the service.
I have a database for which I use RMAN for backup & recovery. The database is in archivelog mode. Online redo log files are multiplexed and I have more than one destinations for archive logs. If, due to a disk crash, all data files and redo log files are gone - and I have archive logs, one member of each redo log group and a full database backup available, I can recover till the last archived log. But I want to ask that what about the transactions which were not archived at the time of media failure? How can I recover committed transactions which were not archived at the time of crash, and I have a mirrored copy of log group which was current at the time of failure?
View 5 Replies View Relatedunderstanding rman scn based Backup Algorithm .. In SCN based backup do rman generate backup from archivelogs ???
View 1 Replies View RelatedI have 2 seperate rman backup one backup is of only datafile ,spfile and controlfile which i am able to restore and recover without any problem say bkp1 taken at 10 am
other set of backup is of only archive log files of same day but later time than datafile backup say bkp2 taken at 8pm...if i restore and recover bkp1 and try to restore bkp2 it gives error datafile exist (possibly due to fact both backup have control file)
if i just restore bkp1 and try to restore bkp2 so that i can do one recover at time
it gives error datafile permission issue (possibly due to fact both backup have control file)
I want to restore database upto 8pm time how can i use both bkp1 and bkp2 to do it(restore datafiles and apply all archive logs on it)
We have two ORACLE-Standard-Edition installations, one is installed on a machine in our production department and one is installed on an central server. We want to replicate the data from the production-DB to the central server to backup the data on tape drives.
Is this possible using the feature of standard edition?
SQL> alter database mount;
Database altered.
SQL> alter database open resetlogs;
alter database open resetlogs
*
ERROR at line 1:
ORA-01139: RESETLOGS option only valid after an incomplete database recovery
My scenario is: database is in archivelog mode.
I run DLY cold backups including controlfile & archivelogs and keep 3 gens of backups and archivelogs to 3 days also. What is the correct procedure to restore back to an old cold backup. Database is backed up Mon,Tue,Wed on Thur we require to bring database back to Tuesday DLY security.
I have tried:
startup mount
restore database from tag 'DLYTUE'
recover database
( this just rolls forward on all archive logs once it restores datafiles, not getting to point to alter database open resetlogs.)
Next tried to :
recover database archivelog tag 'DLYTUE'
( same outcome )
What is the correct rman procedure including should I remove old archive logs from working OS directory ? Also need to know once I restore back and open database to TUE security how do you tidy up the archive logs and dumps which are no longer require i.e. : weds..
I have read about using the set until time option but how to I get absolute time from when cold backup completed if this is the correct procedure.
I need to make my database to ARCHIVELOG mode when i try it it gives below following error
SQL> alter database archivelog;
alter database archivelog
*
ERROR at line 1:
ORA-00265: instance recovery required, cannot set ARCHIVELOG mode