A question about Physical Standby

Hello everybody, this is my environment:
Primary Database: RAC nodes, Oracle 11.1.0.7, SLES 10
Standby Database: Single Instance, 11.1.0.7, SLES 10
Protection Mode: Max. Performance
Standby database is open with real time apply, ‘cause, it is used by read only applications. At least, twice a week, standby database is desynchronized with its primary database. In that situation, standby remains open sometimes but other times, it changes from open to mounted state, what its troubles ‘cause applications can’t read data from it.
Finally, I don’t know, why standby after having GAP or being desynchronized with primary, sometimes remains OPEN and other times changes from OPEN to MOUNTED.
Thanks a lot, any help will be appreciated.

If I understand you correctly, you are asking why changing the database name does not necessitate changing the service name? There is no direct relationship between them, you can define any number of service names to register with the listener. By default, there will be a service that does have the same name as the database (possibly with a domain appended) but you do not have to use that one. Query V$ACTIVE_SERVICES and DBA_SERVICES to see what services are available.
Edited by: JohnWatson on Oct 11, 2012 1:50 PM
Sorry - " a service that does have the same name as the database" should read " a service that does have the same unique name as the database"

Similar Messages

Question - Oracle Physical Standby

Oracle 10.2.0.3 database running on row logical disk (row device) with two thread RAC cluster with CRS and AIX-HACMP implemented on two nodes running AIX6.1 OS
My question can one create simple Oracle Physical Standby (without data guard etc) Database on different AIX node which do not have HACM and CRS RAC but simple non RAC Oracle S/W installed
If this can be done how the single one thread non RAC Oracle database will consume and apply two thread archive logs and keep itself to sync with primary database changes.
Can you please provide some details if this is feasible or not? My guess is for this to happend ORACLE RAC setup with RAC enable Oracle S/W is must with one active thread and other thread can be inactive and not in use.
Thanks –

A standby database is not Data Guard ... it is a standby. Data Guard is a specific automated implementation of a Standby. You can do whatever you wish manually if you prefer pain to comfort.
Personally I'd throw away the IBM stuff and go with Data Guard: It is far superior and does something critical HACM can not do ... guarantee that what is replicated is logically correct. Replicating corruption has no value.

RMAN question concerning Physical Standby

We have a database in a two-server Dataguard environment. We use RMAN to backup up the Primary database (on the server CORE), but we do not backup the Physical Standby (this was recommended by our vendor).
Once a month, I switchover the Primary database (on the server CORE) over to the Physical Standby database (which is on the server DG). I apply Linux patches to the CORE server and reboot. I then bring up the database as Physical Standby (using "startup nomount", followed by "alter database mount standby database" and then "alter database recover managed standby database disconnect from session"), and then I do a switchover and make it the Primary again.
My question is, after I bring up the database on the server CORE as a Physical Standby, and before I do a switchover to make it the Primary again, can I use RMAN to run a "restore database validate" to see if my backups are currently valid, or would this not give me the expected results since I am the Physical Standby?
Thanks in advance.

You should have any problem. What you're doing is similar to a a "rolling upgrade". When your physical to production environment make sure put the dest_2 in defer. Is your current physical standby works now? If so, there's problem.

About physical standby database

We have physical standby database(10g). what are steps to put standby database in ready only mode for time being and then put it back in primary-secondary relationship once cheking is done?

Cancel the redo Apply
SQL>ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL;Open The database
SQL>ALTER DATABASE OPEN;Do your stuff.
Once done, shut it down, then mount it again and resume the redo apply
SQL>SHUTDOWN IMMEDIATE;
SQL>STARTUP NOMOUNT;
SQL>ALTER DATABASE MOUNT STANDBY DATABASE;
SQL>ALTER DATABASE RECOVER MANAGED STANDBY DATABASE DISCONNECT;If you use real-time redo apply, you may want to issue the following command instead of the previous one.
SQL>ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT;...and pretty much that is it.
Be aware that while running it in read-only mode, no logs from the primary are being applied. Also you may hit some bugs when you open your standby database. So if this standby is your production one, make sure you know how to deal in a situation when you need to resolve possible issues.
Jason Arnell has explained one possible buggy scenario on his blog - LINK.
--Mihajlo

E71x problem, and a question about 'physical damag...

Hiya,
Soooo I got the E71x in June, and I loved it, until about a month ago, it started frustrating me non stop.
The phone will tell me that its battery is low after I've charged it completely, and have seen 5 bars worth of power for 30 mins;
it will turn off without shutting down, without alerting me
it will freeze, and won't turn off with the power button--the only thing to do is pull the battery out;
it will tell me the sim card isn't registered and then turn off
OR
the screen will go blank, turn white, and display a message that says 'Insert SIM card' when the sim card is already in, and hasn't been moved or anything;
the phone will die when I try to send text messages, call someone, or the first 30 seconds into a call;
whenever the phone dies on me, I have to pull the battery out & then turn the phone back on, and when I do so a ghost image of whatever i had been doing before the phone died (the text i was about to send, for instance, or the home screen, or the 'insert sim card' screen) will appear for a second, pixelate, then vanish.
I called AT&T, they do not believe that it is a charger or battery issue, since I've checked those anyway. My software is up to date, I've tried all the online troubleshooting tips. I've obviously dropped my phone before, who hasn't, but it was never anything *huge*, the phone never turned off because I dropped it, the battery never popped out, etc. It has fallen from my jeans to the floor, for example, that's about it. So there's no physical damage because of that. I have never gotten the phone wet;---the circle on the back of my battery is white, so it hasn't been exposed to liquid or heat or anything extreme. I don't think my warranty would be turned down for physical damage due to the above mentioned.
However, I have a question if anyone who works for Nokia reads these boards; my parrot removed the 'p' key from the keyboard--just the key, the pad underneath works fine and is untouched, i can still type the letter p and everything--but the 'p' key, just that one, is missing. I can't find it. Would I really be denied my 1 year warranty because of that? is there anyway I can buy a key to replace the 'p' key so that I could send my phone to AT&T? all it would need to be fixed is a tiny dab of glue. That's it. I will be very frustrated if I can't get my phone fixed within warranty because of that key; I would be forced to get another phone, and I don't think my choice would be another Nokia. Please let me know what I can do about this problem, it's getting ridiculous, I can't even answer phone calls without my first rushed sentence being 'my phone might hang up on you but i'll call you back' anymore.
HELP
Solved!
Go to Solution.

hahaha no, it's not the e71x, it is a piece of popcorn she DEVOURED. She LOVES popcorn. MMMmmmmMMMM she says. Haha.
@FastTortoise, I think a parrotlet might be a good fit for you, they were my pick because they have the same personality as a parrot (spunky, loving, fun, funny, etc) but they're TINY, and VERY quiet (comparatively::they've got nothing on cats). Check out this site for more info http://www.talkparrotlets.com/forum.php my name on there is brittany_lynn, you might be able to get my email from that site or from this, lemme know if you have ?'s or anything
P.S. All birds need a cage, a parrotlet just needs a smaller cage.

Oracle Dataguard Question on Physical Standby Database with a Time Lag

I have a Standby database (PROD_LAG) that has a delay of 24hrs. How do I check to see what Archive have applied, what is current, and what is left to do.
There is a script but its for a Logical Standby database...
Thanks you in advance...

hi,
ok a little bit more explanation.
The GUI does work but seems to report incorrect data.
I have carried out a switchover so the primary database is now 'offsite_emrep' and the standby database is 'office_emrep'
The GUI how ever still reports that office_emrep is the primary database.
I cannot add the offsite_emrep database as the host is unknown. I am however running the GUI from the Host.
I have the following from the agent status
[oracle@griddg bin]$ ./emctl status agent
#Oracle Enterprise Manager 10g Release 3 Grid Control 10.2.0.3.0.
Copyright (c) 1996, 2007 Oracle Corporation. All rights reserved.
Agent Version : 10.2.0.3.0
OMS Version : 10.2.0.3.0
Protocol Version : 10.2.0.2.0
Agent Home : /u01/app/oracle/product/10.2.0/agent10g
Agent binaries : /u01/app/oracle/product/10.2.0/agent10g
Agent Process ID : 19797
Parent Process ID : 19780
Agent URL : https://griddg.domain.net:3872/emd/main/
Repository URL : https://griddg.domain.net:1159/em/upload
Started at : 2007-10-01 12:35:02
Started by user : oracle
Last Reload : 2007-10-01 12:35:02
Last successful upload : (none)
Last attempted upload : (none)
Total Megabytes of XML files uploaded so far : 0.00
Number of XML files pending upload : 116
Size of XML files pending upload(MB) : 27.67
Available disk space on upload filesystem : 83.08%
Last attempted heartbeat to OMS : 2007-10-01 12:38:08
Last successful heartbeat to OMS : unknown
Agent is Running and Ready
any help is appreciated.
rgds
alan

Two basic questions on Physical Standby

DB version: 10.2.0.5
OS : Solaris
Question1.
This is how one mounts a Standby Database. Right?
$ sqlplus / as sysdba
SQL*Plus: Release 10.2.0.5.0 Production on Thu Dec 16 13:16:33 2011
Copyright (c) 1982, 2010, Oracle. All rights reserved.
Connected to an idle instance.
SQL> startup nomount;
ORACLE instance started.
Total System Global Area 1436819456 bytes
Fixed Size                  2158344 bytes
Variable Size             855642360 bytes
Database Buffers          570425344 bytes
Redo Buffers                8593408 bytes
SQL> alter database mount standby database;
Database altered.Question2.
Once MOUNTED (using the above command), the standby database will be in a consistent state of recovery automatically by applying the shipped archive logs. Right ?
Or , do we have to explicitly issue the below command on a regular basis to apply the shipped archived redo logs to make it Sync with the primary DB ?
recover standby database;

Hello;
Assuming you are using SQL you would start the Standby mount :
SQL>startup mount;You can start the Redo Apply runs as a foreground session or as a background process :
Foreground :
SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE;
Background :
SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE DISCONNECT;You have to do this each time you bounce the Standby database. If everything is working ( Network etc the redo will start to apply )
To stop redo apply issue :
SQL>ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL;You may find these two simple queries from the Primary helpful :
clear screen
set linesize 100
column STANDBY format a20
column applied format a10
SELECT
   NAME AS STANDBY,
   SEQUENCE#,
   APPLIED,
   COMPLETION_TIME
FROM
   V$ARCHIVED_LOG
WHERE
   DEST_ID = 2
AND
   NEXT_TIME > SYSDATE -1;
SELECT
MAX(SEQUENCE#)
FROM
V$ARCHIVED_LOG
WHERE
NEXT_TIME > SYSDATE -1;Best Regards
mseberg

Question about Physical Inventory

Dear Friends,
When I go to Physical inventory (MI01) posting block tick doesn't come automatically.
I want to know, If I can set the tick by default?
If its possible please let me know?
Best regards,
Zubaer.

Dear HKV,
Thank you very much for your response. I will tell you the scenario step by step.
1. Go to MI01.
2. Give plant and Storage location.
3. Tick posting block (The tick is not coming automatically) and go inside to write Article and bla bla things.
Now, I want the tick to be there by default.
Regards and Thank you,
Zubaer.

Physical standby databse

I am using 10g release 2, my question is Physical standby swichover without downtime or manually should start the standby database.

you will have a short downtime while switching over.
It depends on the startupt time you need for the instance.
You can follow both alert.log files and see which processes are started and when the databases are shut down and restarted.
And of course you have to ensure that your listener-configuration is correct so the application or whatever is able to reach the new site.
Edited by: torgum on Nov 3, 2009 11:27 AM

Question regarding removal of physical standby database?

We are running a 2 node rac cluster on linux itanium and we have setup one physical standby server. We did not use the data guard broker to setup the standby database we simply set 2 parameters log_archive_config and log_archive_dest_2.
We now are looking to remove the physical standby server and I see that the 2 parameters are dynamic so I was trying to find out if it is as simple as running the alter system comands to reove the 2 parameters?
I gues my real question is more about the syntax of removing the parameters?
Would this syntax be correct?
alter system set log_archive_config='' scope=both sid='*';
alter system set log_archive_dest_2='' scope=both sid='*';
and does it make a difference which parameter is removed first?
Thanks I appreciate any help.

the standby system is also a 2 node cluster but only one of the nodes has the instance up in a mount state running in recover mode and the other instance is simply shutdown.
Thanks.

Questions regarding creating a physical standby database in 10gR2

I'm setting up a physical standby database in a test environment using two windows 2003 servers. I was wondering if someone could answer a few questions I'm not too clear on. I've been thru the data guard manual and as much online information as i can find. I may have it working but wanted to post some things I'm not sure I did quite right.
My tnsnames.ora files.
On my primary database server:
# tnsnames.ora Network Configuration File: F:\oracle\product\10.2.0\db_1\NETWORK\ADMIN\tnsnames.ora
# Generated by Oracle configuration tools.
PRIMARY =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = SERVER1)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = PRIMARY.MYDOMAIN.com)
STANDBY =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = SERVER2)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = STANDBY.MYDOMAIN.com)
On my physical standby database server:
# tnsnames.ora Network Configuration File: f:\oracle\product\10.2.0\db_1\NETWORK\ADMIN\tnsnames.ora
# Generated by Oracle configuration tools.
STANDBY =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = SERVER2)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = STANDBY.MYDOMAIN.com)
PRIMARY =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = SERVER1)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = PRIMARY.MYDOMAIN.com)
My Listener.ora files:
On my primary database server:
# listener.ora Network Configuration File: F:\oracle\product\10.2.0\db_1\NETWORK\ADMIN\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = PRIMARY.MYDOMAIN.com)
(ORACLE_HOME = f:\oracle\product\10.2.0\db_1)
(SID_NAME = primary)
LISTENER =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = server1.mydomain.com)(PORT = 1521))
On my physical standby database server:
# listener.ora Network Configuration File: f:\oracle\product\10.2.0\db_1\NETWORK\ADMIN\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = standby.mydomain.com)
(ORACLE_HOME = f:\oracle\product\10.2.0\db_1)
(SID_NAME = standby)
LISTENER =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = sever2.mydomain.com)(PORT = 1521))
The next item I'm not sure about is after creating the control file for standby use.
One the primary server I created it using:
alter database create standby controlfile as 'sbcontrol01.ctl';
I copied the primary database pfile I had created earlier to the standby server, renamed it and edited it.
Initially I left the CONTROL_FILES= parameter pointing to the control01.ctl, control02.ctl and control03.ctl that I restored. But I was getting the error ORA-01665: control file is not a standby control file
So I copied the sbcontrol01.ctl to sbcontrol02 and sbcontrol03.ctl and pointed the CONTROL_FILES= parameter at them.
The error went away and the database came up. I still need to test it some more but wanted to see if what i did was correct or a fluke.
Edited by: tjohnson on Mar 23, 2009 2:26 PM

If in the primary I had control files named control01, control02 and control03 would I have been able to create a standby controlfile called control01.ctl or would I have had to name it something else like I did (sbcontrol01.ctl) and rename it to control01.ctl once I got it over to the standby database server?Suppose you have the primary database control file in C:\oracle\primary\control location with names control01.ctl and control02.ctl. Then also you can create a standby controlfile with control01.ctl and control02.ctl , but then the location to be created must be different.You can create it in C:\oracle\primary location and then transfer to the specified location mentioed in the pfile of the standby database and mount the standby database.
But saying this i would suggested to keep the name different from control01.ctl as far as naming conventions are followed.It might confuse someoe whether its a primary database controlfe or a standby database controlfile.Usally primary database controlfile are named control01.ctl , coltrol02.ctl etc and for standby many do prefer keeping standby01.ctl, standby02.ctl.Thats just for for understanding.
HTH
Anand

About Data Guard - Physical Standby Database

Dear All,
I have read many documents regading Data Guard.
I am about to setup Data Guard in our current environment but want to clear few tings.
I have a confusion between physical and logical standby database.
What I have read from different documents is:
-Physical Standby Database in (11g)
1) It is the most efFicient
2) I can be either in mount or open state
3) Select queries and reporting can be done to improve performance of the primary database.
4) Schema on primary and standby database is always the same
-- Logical Standby Database
1) You can create additional tables, indexes, etc.
2) Always in open mode
3) Select queries and reporting can be done to improve performance of the primary database
Now our scenerio is, that we have one server at the moment, OS is linux and operating system is 11g. We want to setup an other server in another country, will also be 11g on Linux in a way that it acts as standby/backup server. Schema and data is always the same. In case due to unavailability of primary server, standby server acts as the primary server (This has to be automated). The reason for unavailability could be any like maintenance work on primary server, network or hardware failure at primary server. The last and the most important thing is that users from this country where we will setup standby database will insert/update data on the primary server BUT queries and reporting will be done from this newly created standby data.
Kindly recomend the best Data Guard in this scenerio and kindly correct me where I am wrong.
Thanks, Imran

A logical standby has various limitations on things like data types. It's also a much more complex architecture, which makes it more likely that something will break periodically and require attention. Applying redo to a physical standby is code that has been around forever and is as close to bullet-proof as you'll get. And you would generally prefer to fail over to a physical standby-- if you do things like create new objects in the logical standby, you may have to get rid of those objects during a failover to get acceptable OLTP performance.
Justin

2 questions about SmartWare (password protection, resume after standby)..

Hi guys, 2 quick questions about the SmartWare utility. I have searched for previous answers, but couldn't find any. Might be that I uses the wrong search terms though, so sorry in advance if this had been asked (and aswered) before. When I create a backup, it is being stored file-by-file in the "SmartWare" folder on the NAS. Since the SmartWare folder is public, all users with access to the drive can access this folder. Ultimately this means that ALL users of the drive can access the backup files of ANY user. If someone performs a full backup, this means that anyone has access to ALL the data of that person. I could't find any option in SmartWare to password-protect backups or something. From a security point of view, I would consider this as a worst-case scenario. Even worse is that there is no mentioning of this in the user's manual. Am I missing something here? Is there a way to protect backups against access by any other user? If this is really not possible, I would consider this application to be pretty much useless, to say the least. "Dangerous" would be a better description... My 2nd question is only relevant if there's a solution for the first one, because else I would't use this tool anyway: Does it automatically resume a backup if the machine is put to standby or hibernation mode during a backup operation, or will it restart from the start, or will the backup be interrupted (and thus useless)? Many thanks in advance!

One can create a Private Share on the WD My Cloud, configure it so only one user has access (password protected), then one can configure the SmartWare software to backup to that private share folder. One changes the backup location in the SmartWare program by selecting the dropdown selector box below the "WD My Cloud" on the Smartware "Home" screen. The Smartware User Manual explains this process under Chapter 5, Backing up Files, step 2, substep c. Smartware should resume the backup when ever it is interrupted. Here is how it is explained in the Smartware User Manual:Note: Backup protection is automatic for as long as the backup source and target devices are connected to your computer. Then, whenever you disconnect and reconnect either device, the WD SmartWare software rescans the backup source device for new or changed files and resumes automatic backup protection.

Dataguard physical standby archive log question

Hi all,
I will try to keep this simple..
I have a 4 node RAC primary shipping logs to a 2 node physical standby.
On the primary when I run 'alter system archive log current' on an instance I only see 1 log being applied on the standby, that is by querying v$archived_log.
If I run the following on the standby:
select thread#,sequence#,substr(name,43,70)"NAME",registrar,applied,status,first_time from v$archived_log where first_time
in
(select max(first_time) from v$archived_log group by thread#)
order by thread#
I get:
THREAD# SEQUENCE# NAME REGISTR APPLIED S FIRST_TIME
1 602 thread_1_seq_602.2603.721918617 RFS YES A 17-jun-2010 12:56:58
2 314 thread_2_seq_314.2609.721918627 RFS NO A 17-jun-2010 12:56:59
3 311 thread_3_seq_311.2604.721918621 RFS NO A 17-jun-2010 12:57:00
4 319 thread_4_seq_319.2606.721918625 RFS NO A 17-jun-2010 12:57:00
Why do we only see the max(sequence#) having been applied and not all of them?
This is the same no matter how many times I archive the current log files on any of the instances on the primary and also the standby does not have any gaps.
Hope this is clear..
any ideas?
jd

ok output from gv$archived_log on standby BEFORE 'alter system archive log current' on primary
THREAD# SEQUENCE# NAME REGISTR APPLIED S FIRST_TIME
1 679 thread_1_seq_679.1267.722001505 RFS NO A 18-jun-2010 11:58:22
1 679 thread_1_seq_679.1267.722001505 RFS NO A 18-jun-2010 11:58:22
2 390 thread_2_seq_390.1314.722001507 RFS NO A 18-jun-2010 11:58:23
2 390 thread_2_seq_390.1314.722001507 RFS NO A 18-jun-2010 11:58:23
3 386 thread_3_seq_386.1266.722001505 RFS YES A 18-jun-2010 11:58:22
3 386 thread_3_seq_386.1266.722001505 RFS YES A 18-jun-2010 11:58:22
4 393 thread_4_seq_393.1269.722001507 RFS NO A 18-jun-2010 11:58:23
4 393 thread_4_seq_393.1269.722001507 RFS NO A 18-jun-2010 11:58:23
Output from v$archived_log on standby AFTER 'alter system archive log current' on primary
THREAD# SEQUENCE# NAME REGISTR APPLIED S FIRST_TIME
1 680 thread_1_seq_680.1333.722004227 RFS NO A 18-jun-2010 11:58:29
1 680 thread_1_seq_680.1333.722004227 RFS NO A 18-jun-2010 11:58:29
2 391 thread_2_seq_391.1332.722004227 RFS NO A 18-jun-2010 11:58:30
2 391 thread_2_seq_391.1332.722004227 RFS NO A 18-jun-2010 11:58:30
3 387 thread_3_seq_387.1271.722004225 RFS NO A 18-jun-2010 11:58:28
3 387 thread_3_seq_387.1271.722004225 RFS NO A 18-jun-2010 11:58:28
4 394 thread_4_seq_394.1270.722004225 RFS YES A 18-jun-2010 11:58:29
4 394 thread_4_seq_394.1270.722004225 RFS YES A 18-jun-2010 11:58:29
as a reminder we have a 4 node RAC system shipping logs to a 2 node RAC standby. There are no gaps but only one log is ever registered as being applied.
Why is that? Why arnt all logs registered as being applied?

Question-Recovering tablespace in physical Standby...Oracle 10g?

Hello:
I have an interesting issue. I thought I will ask the group.
I have a physical standby database in 10g. Once of the datafile is in inconsistent state due to a crashed DB during recovery from the last time around.
I do not have any archivelogs, either on standby or primary .. Unfortunately.
However, the primary database is alive and well.
How do I recover my datafile selectively? Is a complete restore/recreation of the standby is the only option?
Any ideas?
Thanks in advance.
Ganesh

read that link
http://download.oracle.com/docs/cd/B19306_01/server.102/b14239/scenarios.htm#CIHIAADCKhurram

A question about Physical Standby

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