Undo Application During Instance Recovery?
Apr 10, 2013During rollback phase of instance recovery, where is the undo applied from:
- redo logs
or
- undo generated during redo application in roll forward phase?
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Recovery Of Undo Tablespace?
Apr 2, 2013S:Solaris
DB:10g
I am simulating a recovery of drop undo tablespace. for the same I have done the following things:
1. Dropped the only undo datafile from the os level while the database was open.
2. Then I created a table and inserted and updated some values in it and I was also allowed to commit.
When I am updating the rows of the table,the before images must have been written to UNDO but in my case there is no UNDO datafile.
Backup & Recovery :: ORA-00265 / Instance Recovery Required - Cannot Set ARCHIVELOG Mode
May 28, 2008I 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
Server Administration :: Roll Of Undo In Recovery?
Aug 4, 2011what is the role of undo cache or undo tablespace in recovery?
View 3 Replies View RelatedBackup & Recovery :: UNDO Tablespace Deleted From OS Level?
Mar 24, 2013Operating System - WindowXP
oracle version 10.2.0.1
I was learning some recovery part in my home laptop. Database is in Archivelog, flashback mode. All of sudden, i deleted it from OS level with out taking backup of it.
When i tried to open database, it failed to start. Database is in mount mode.while trying to open, it gives message -
ORA-01157: cannot identify/lock data file 1 - see DBWR trace file
ORA-01110: data file 1: 'F:ORACLEPRODUCT10.2.0ORADATADBSYSTEM01.DBF'
I tried to create on file named "UNDOTBS01.DBF" but oracle is not recognizing it.
Server Administration :: Sizing Undo Tablespace And Setting Undo-retention?
Jan 30, 2004regarding sizing undo tablespace and undo_retention parameter.we have to implement the database in production system with 40 users but how much space should be allocated to undo tablespace is there any propotions related to virtual memory and the
parameter.i have gone thru oracle doc's and some related sites.its an ERP aplications that contains 20 modules .I am an new one to this dba level
Undo Segments In Undo Table Space
Nov 29, 2012Can we find out no of undo segments in undo Table space ? If so , how to find? what's their max limit ?
View 9 Replies View RelatedReal Application Clusters :: Possible To Have Three Undo Tablespaces For 2 Node
Oct 12, 2012Version: 11.2.0.2/RHEL 5.4
I was under the impression that you need only one UNDO Tablespace for each instance. But , for our 2-node RAC, I can see three Undo tablespaces.
SQL> select tablespace_name,status from dba_tablespaces where CONTENTS = 'UNDO';
TABLESPACE_NAME STATUS
------------------------------ ---------
UNDOTBS1 ONLINE
UNDOTBS2 ONLINE
UNDOTBS3 ONLINE
SQL> select distinct inst_id from gv$session;
INST_ID
----------
1
2
$ olsnodes -n
thclst214 1
thclst215 2
Backup & Recovery :: How To Do Replication Of Instance Into Another One
Sep 13, 2013I 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.
Oracle 11g Installation - Database Instance Recovery
Oct 16, 2010My database is working on Oracle 10g. After installing a Oracle 11g in my PC instance went down and my database got corrupt. What are the steps I should follow to recover my Database?
View 2 Replies View RelatedBackup & Recovery :: How To Create Auxiliary Instance
May 13, 2008i want to create auxiliary instance for remote database.how i will create .how many instance can be open at a time and what is actually instance.
View 7 Replies View RelatedStartup SMON Process Will Do Instance Recovery
May 7, 2013we have given shutdown abort to a database.At the next startup SMON process will do instance recovery. If it contains committed as well as uncommitted transactions on what basis or how the SMON process will roll forward or rollback the transactions and from where it will get these informations or data?
View 4 Replies View RelatedBackup & Recovery :: Create Another Instance For Catalog User To Import It
Jan 13, 2013On production server i have the production database and i have another instance for recovery catalog database.and on DR server i have only one instance for production database .In the scenario of recovery,
- i did export for recovery catalog user
- i have latest rman backup for production database
On the DR server as i mention up , i have only on instance , my question is , i need to create another instance for recovery catalog user to import it ? or on the same target database on DR i can import the recovery catalog ?
Recovery Manager (RMAN) :: Restoring A Backup To A New Database Instance
Sep 4, 2013I have an issue with restoring a RMAN backup that i have with me to a new database instance. What i have with me are: 1. Backup of SPFile.
(O1_MF_NCNNF_CTLFILE_BU_92DVGYO2_.BKP)2. Backup of Control file (O1_MF_NNSNF_SPFILE_BU_92DVGW9H_.BKP)3. Full database backup (O1_MF_NNSNF_FULLPROD_BU_92DVGW9H_.BKP)
I have received these files from a customer environment and I need to restore these to a new database instance in a local machine. I have given a attempt as follows (in Oracle 10g): 1, Created a new database instance (Test75) using Oracle Database Configuration Assistant2. SET ORACLE_SID = Test753. Connected to this instance using RMAN4. Tried to restore the SPFILE from the received BKP file.I am getting errors and cannot proceed. I am not sure whether I am executing the correct steps.
Application Express :: How To Update Application From One Instance To Another Without Losing SIR
Aug 21, 2013We have several prod instances and many applications on each of these... and interactive reports saved by many users.Each prod application have its own ID, distinct from the dev application ID.
Until today I used the apex_application_install inside the first wokspace only, and it works fine, but I need to update applications on every instances. It seems the only way to keep a saved report during an update is to use the same application Id (use the app n°200 to overwrite the n°200).So it means the only available method is : release the dev app on the dev workspace ; export 50 apps from it and import those 50 times, maybe more in the future.
My configuration :Oracle Standard or XEApex 4.1.1OHS
Application Express :: 4.2 - Can't Go To (INTERNAL) Manage Instance
Oct 16, 2012I upgraded my APEX instance from 4.1 to 4.2 and now I can't go to (INTERNAL) Manage Instance->Instance Settings I see only ORA-28817: PL/SQL function returned an error.
View 5 Replies View RelatedApplication Express :: Web Services - Replicating Data From One Instance To Other
Jul 3, 2013I'm basically experimenting with the concept of replicating data from one instance to the other. Using this thread as a guide, I was wondering if I could create a service on an Apex 4.0 instance, and have an application apex.oracle.com consume that service?
View 0 Replies View RelatedBackup & Recovery :: RMAN Backup Instance And Tablespace
Apr 18, 2013we are using dataware house of huge amount of data I want to take backup using rman so that I restore oracle instance and specific tablespace only not full database
View 4 Replies View RelatedReal Application Clusters :: Things to be Done After Restarting RAC Instance?
Dec 17, 2012what all are the things to be done when ever a production instance is restarted
Linux
Oracle 11.2.0.2.0 RAC 3 Node
Real Application Clusters :: One Node Or Clusterware Single Instance Failover?
Aug 21, 2012I am trying to design a database consolidation high-availability cluster for Oracle 11g R2 64-bit Enterprise Edition (X86-64) on Oracle Linux 6.x UEK, using Oracle 11.2.0.3 (the latest as of Aug 2012).
We don't need RAC Multi-Node now or in foreseeable future because none of the databases we run break the capacity of a single node. Likewise, we don't need to use Oracle VM to virtualise the database instances.
We plan to use SGA and PGA memory management to run multiple instances on same hardware operating on a single Linux 64-bit O/S image.Does it sound ok so far?
Two or three of 4-socket, 40-core Intel 64-bit servers with 512GB of RAM each (relatively cheap at today's HW commodity prices) will be sufficient to run all Oracle databases we have on Linux 64-bit.So the two HA options that I know of are:
(1) use Oracle Clusterware/Grid/ASM to provide for instance failover
(2) use Oracle RAC One Node on top of Clusterware/Grid/ASM
As I understand it RAC One Node is significantly more expensive than the "free" Oracle Clusterware/ASM/Grid (since we own Oracle 11.2.0.3 Enterprise Licences already). So why should my employer pay for RAC One Node licence given they already own Single Instance Fail-Over and Restart protection from Clusterware/Grid/ASM ?
I also read that Data Guard 11.2 may not be supported with RAC One Node on 11.2? True? Will same Data Guard 11.2 work with a Single-Instance Failover running on Clusterware/Grid/ASM ?
-Who is running RAC One Node? Why?
-Who is running Single Instance Failover with Clusterware? Why?
-Who is using Data Guard with either of the above?
Application Express :: Manage Workspace Instance Settings In APEX Administration
Jul 23, 2013I would like to change the printing settings in my workspace Instance settings. But, I can't find the "Manage Instance" option mentioned in the tutorials.
View 4 Replies View RelatedData Guard :: Possible To Use Dataguard From Single Instance To RAC Instance?
Jul 1, 2010Is it possible to use oracle dataguard from single instance to RAC instance ? Does Oracle dataguard support this ?
View 1 Replies View RelatedServer Administration :: How To Get Disk List On Any DB Instance That Uses ASM Instance
Mar 16, 2011My context on our servers is the following one:
- one ASM instance
- X DB instances
- each DB instance uses 2 or more dedicated diskgroups from the ASM instance
- there is one diskgroup named FREEDISK that contains spare disks
On each DB instance you can see:
- the list and global parameters of all diskgroups using v$asm_diskgroup view
- the list and parameters of all disks the instance is using with v$asm_disk view
So my question is: how (if this is possible) to know the list of (spare) disks in FREE DISK disk group?
Real Application Clusters :: Convert 10g Single Instance (uses ASM) Database To RAC - Reconfigure Fails?
Oct 5, 2012I have 11gR2 GI installed on two nodes. I am trying to convert a 10g single instance (uses ASM) database to RAC and getting this error. I am trying using 12c as well as manually by using rconfig.
[main] [21:19:15:145] [ASMInstance.initialize:135] First record =[Ljava.lang.String;@958bb8
java.lang.NullPointerException
at oracle.sysman.assistants.rconfig.engine.ASMInstance.initialize(ASMInstance.java:153)
at oracle.sysman.assistants.rconfig.engine.Step.execute(Step.java:283)
[code]...
SQL & PL/SQL :: Find Out How Much Undo Will Be Generated By DML / DDL
Mar 29, 2010How to find out how much undo will be generated by a dml / ddl statement in Oracle 9i? With Oracle 10g we can use the famous mystat.sql and mystat2.sql with argument as 'undo change vector size'.
However with Oracle 9i there is no statname as 'undo change vector size'
Undo Tablespace Size
Jun 6, 2012At a time my 20 GB undo tablespace was full. So i increased the tablespace size upto 48 GB. Then i saw 45 GB was used. Then i changed undo_retention=60. After that am seeing that 48 GB is full.
1) why it's happened?
2) Here what is the effect of undo_retention=60
3) How to resolve?.
Can Undo Tablespace Be Too Large
Apr 26, 2013Can an undo tablespace be too large and actually hurt performance? I have seen a system with a dedicated 1 TB drive for undo tablespace (no guarantee) with an undo_retention of 7 days. Would this hurt performance? What about setting an undo_retention of 24 hours with no guarantee? The only mention I could find online said that it would not hurt performance but I wanted to double check. You would think that Oracle does not care if it deletes the undo at 15 minutes or if it deletes the undo at a later date such as 7 days later and the performance should stay the same.
View 3 Replies View RelatedUndo Tablespace Management
Apr 23, 2013I am trying to drop 90 columns from a big partitioned table. I was trying a physical drop first and since it is taking longer time I decided make the columns unused state and drop them. However I was able to set them to unused state.
Now I am trying to drop those unused columns from the table, it is running since 22hours Apporox. I am keep increasing the undo tablespace to retain the undo data.
I also have decreased the undo_retention to 300 from 900.
My question is there any better way to drop these columns. And is there any way to flush out the data from undo.
SQL & PL/SQL :: Undo Dropped Column From Table
Jul 13, 2013Flashback query is working fine for dropped table,but throwing error when trying to get back the previous date by dropping a column from a table.
FLASHBACK TABLE emp TO TIMESTAMP TO_TIMESTAMP('2013-07-13 05:00:00', 'YYYY-MM-DD HH24:MI:SS')
SQL Error: ORA-01466: unable to read data - table definition has changed
Is that a limitation of Oracle by not having query to flashback a column but a table.
Performance Tuning :: Undo Space?
Jan 15, 2012Query to find out who is eating up most of the undo space and what query he is running..
View 3 Replies View Related