RAC/Standby enviornment configuration---database wise

Hi, Our final migration is getting very close. I have implemented/configured everything according to oracle MAA, and hopefully after migration, the system will be more stable than previous enviornment.
However, I have some questions here regarding memory parameter, and others.
Our OS is redhat linux 5. DB are 11.2.0.3
Primary are 2 nodes RAC, standby are 2 nodes RAC, plus one standalone standby.
/proc/meminfo shows below:
nfo
MemTotal: 98989076 kB
MemFree: 369244 kB
Buffers: 881572 kB
Cached: 94279628 kB
SwapCached: 2436 kB
Active: 14723460 kB
Inactive: 82602444 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 98989076 kB
LowFree: 369244 kB
SwapTotal: 101032776 kB
SwapFree: 100839952 kB
Dirty: 2640 kB
Writeback: 0 kB
AnonPages: 2161964 kB
Mapped: 6253148 kB
Slab: 733628 kB
PageTables: 216548 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 150527312 kB
Committed_AS: 25108780 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 476800 kB
VmallocChunk: 34359261519 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
Hugepagesize: 2048 kB
/proc/cpuinfo shows 15 processors.
I have setup the memory target=43904M, hugepage not configured (SA not sure how and I am not sure if it will benefit). Our application is a busy ticketing enviornment. I want to be sure the parameters I setup can handle the load, no node evicitons , etc.
Here are some of my parameters:
lock_sga boolean FALSEbuffer_pool_keep string
buffer_pool_recycle string
global_context_pool_size string
java_pool_size big integer 0
large_pool_size big integer 0
olap_page_pool_size big integer 0
shared_pool_reserved_size big integer 192M
shared_pool_size big integer 0
streams_pool_size big integer 0
pre_page_sga boolean FALSE
sga_max_size big integer 43904M
sga_target big integer 0
memory_max_target big integer 43904M
memory_target big integer 43904M
shared_memory_address integer 0
I would your guys good opinion are those good enough? OUr previous environments are AIX db 11gr1. Our two node Primary RAC kept having node evicitons every other month seems like(previous DBA configured it). and I want to avoid that in my new environment.
Thank you in advance.

Hi,
Most evictions happen due to lost of network connectivity between nodes , resource consumption on the nodes which prevents processes like ocssd , oprocd and cssdmonitor.
or unable to read voting disk, unexpected failures or hangs...
Also if there is any inconsistency of patches across nodes also can cause node eviction. so ensure whatever patches should apply on all the nodes and try to apply latest security patches also. Node eviction is not the only reason for improper SGA settings.
I have setup the memory target=43904M, hugepage not configured (SA not sure how and I am not sure if it will benefit). Our application is a busy ticketing enviornment. I want to be sure the parameters I setup can handle the load, no node evicitons , etc.There are some benefits with hugepages, the page size value can be set 2MB instead of 4kb also whatever memory used by hugepages will be dedicated.
I suggest you to go through with below links.
Very Large Memory and HugePages - http://docs.oracle.com/cd/B28359_01/server.111/b32009/appi_vlm.htm+
Tuning SGA With HugePages - http://docs.oracle.com/cd/B28359_01/server.111/b32009/appi_vlm.htm#CACIBJBB+
*HugePages on Oracle Linux 64-bit [ID 361468.1]*+
And coming to SGA size settings. This should be analyzed once it goes Live , We cannot predict now.
It purely depends on how much buffer hit ratio, physical reads and so on... Once its live then you can use advisors or AWR reports to see for any changes in SGA/memory..
Sorry may be provided information not much helpful. These days am not in touch with RAC. :)

Similar Messages

Creating a RAC standby database for a single instance database

Dear All,
I have a task of migrating a 500GB single instance database to a two-node RAC database with a little downtime at hand. My migration strategy is to:
1) Create a RAC physical standby for the Single Instance database
2) Switchover to RAC standby.
Primary and Standby OS and DB configurations:
OS: Windows Server EE 2003 (64-bit)
DB: Oracle 10g Database Release 2 (10.2.0.4)
Oracle 10g Clusterware Release 2 (10.2.0.4)
To create a RAC standby, I will:
a) Install Clusterware (10.2.0.1)
b) Install Database (10.2.0.1)
c) Patch both Clusterware and Database (10.2.0.4)
d) Create ASM instance for both the nodes (+ASM1 & +ASM2)
e) create standby controlfile on primary
f) Move standby controlfile, RMAN backup of primary, pfile, listener.ora, tnsnames.ora, password file to standby host-1
g) make necessary changes to the pfile on standby host-1 like cluster_database, instance_name, thread, ...
h) mount standby database and restore backup
Kindly validate my steps and if there already exists such a document then please do provide me with a link.
Regards

Please refer to MAA whitet paper :
[http://www.oracle.com/technology/deploy/availability/pdf/MAA_WP_10g_RACPrimaryRACPhysicalStandby.pdf]
[MAA website|http://www.oracle.com/technology/deploy/availability/htdocs/maa.htm]

2 Node RAC standby database

Hi,
I am planning to create a 2-node RAC physical standby database which uses ASM from 2-node RAC production database. I am familiar with RMAN duplicate (11g) network based backup to create the physical standby database, but not sure how this will work to create 2-node RAC standby with ASM.
Could any help me with the document ID which describes how to create a RAC standby database using ASM as storage.
Source:
OS: Linux 64 bit
Oracle: 11.2.0.1
RAC/ASM: yes/yes
Target:
OS: Linux 64 bit
Oracle: 11.2.0.1
RAC/ASM: yes/yes
Thanks in advance!!
Regards,

Hi
You can follow following...
1.Install crs.
2.Create ASM instance at standby site...
3.Prepare parameter file for standby database.
4.start database instance in one node at nomount state..
5.create standby control file at primary database...
6.Copy and paste created control file at primary to standby site..
7.Copy control file at file system and modify location of control file at init<SID>.ora.
8.start standby database mount state..
9.create backup text backup controlfile at primary site...
10.shutdown standby database,change location of controfile inside ASM.. and place nomount state...
11.Create controfile through text backup controfile...
12.backup primary db and paste it in standby site..
13.Use RMAN to place datafile inside ASM..if you not using RMAN for backup and restoration purpose..
14.start standby database in mount state and recover through MRP or foreground process..
15.use SRVCTL to register ASM instances..database and database instances.
For standby database of RAC..there can only be one node up...So..remember you can start instance of one node only...
Hope this will help U.
Tinku

RAC Standby Database rebuild

Hi
Current 10.2.0.4 Setup is with Dataguard Broker (Unix/No OEM Setup):
Rac Primary 2node cluster
Rac Standby 2node cluster
The rac Standby Database are going to be opened read/write.
Then will require a rebuild of standby ie delete db files and duplicate db using rman
1) My questions is how do I rebuild of a rac standby database with an existing enabled dg broker?
2) Are there any documentation on the steps to follow.
3) Should the dg broker config be dropped or just disabled and if so at which stage?
Config on Rac primary should be kept to a minimum as its being used so no outage expected here.
Regards
Me

Have you given any thought to using flashback (depending on how long your standby will be open for read/write)? You could (before you open read/write) copy your dr*.dat files (broker config files), stop the broker and create a guarenteed restore point. After you have finished and ready to convert back to standby you would flashback your database to the restore point, convert back to a physical standby, restart the broker and shutdown. Restore the dr*.dat files to their location and then startup the standby. From there it should fetch the logs from the time the broker was down and catch back up.
If you would rather rebuild, again you would need to take the broker out of the equation and use RMAN to create a clone for standby and then once in place you would reconfigure the broker (may be able to just restore the dr*.dat files from before the open operation but unsure.

Oracle database 10g RAc an ASM configuration

Hi all,
I want to ask to everybody something about Oracle 10g RAC and ASm configuration. We plan to migrate to Oracle 10g from 9i, and we will begin configuring oracle but we have to decide which configuration are the best.
Our materials are bellow:
Hardware: RP 3440 (HP)
OS : HPUX 11i Ver 1
Storage: EVA 4000 (eva disk group)
The problem is:
Our supplier recommand us to use HP serviguard + HP serviceguard extension for RAC+ RAc and Raw device as configuration.
But we want to use Oracekl Clusterware + RAC + ASM
My question is if anybody know what is the best configuration, we want to use ASm.
Can we use HP serviguard and ASM.
Some documentations or link explain oracle RAC and ASM configuration will be appreciate.
Thanks for your help.
Regards.
raitsarevo

Hello,
there's no extra RAC software package, but the option is only offered, if one of the supported cluster layers for the respective OS has been installed before.
10.1.0.3 looks like a complete redesign, but anyway it is a patch, you have to install 10.1.0.2 first.

Oracle database 10g RAC and ASM configuration

Hi all,
I want to ask to everybody something about Oracle 10g RAC and ASm configuration. We plan to migrate to Oracle 10g from 9i, and we will begin configuring oracle but we have to decide which configuration are the best.
Our materials are bellow:
Hardware: RP 3440 (HP)
OS : HPUX 11i Ver 1
Storage: EVA 4000 (eva disk group)
The problem is:
Our supplier recommand us to use HP serviguard + HP serviceguard extension for RAC+ RAc and Raw device as configuration.
But we want to use Oracekl Clusterware + RAC + ASM
My question is if anybody know what is the best configuration, we want to use ASm.
Can we use HP serviguard and ASM.
Some documentations or link explain oracle RAC and ASM configuration will be appreciate.
Thanks for your help.
Regards.
raitsarevo

Hello,
there's no extra RAC software package, but the option is only offered, if one of the supported cluster layers for the respective OS has been installed before.
10.1.0.3 looks like a complete redesign, but anyway it is a patch, you have to install 10.1.0.2 first.

RMAN DUPLICATE FOR STANDBY FROM ACTIVE DATABASE fails

Hello
I'm trying to use RMAN DUPLICATE to create a standby database using Oracle 11.2.0.3 with PSU 6 on HP-UX.
Primary is 2 node RAC. Standby is also 2 node RAC.
Standby database instance is started in nomount mode.
I use:
duplicate target database for standby from active database
spfile
<some spfile parameters>
with PFILE I get:
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of Duplicate Db command at 10/01/2013 12:41:13
RMAN-05501: aborting duplication of target database
RMAN-03015: error occurred in stored script Memory Script
RMAN-03009: failure of sql command on clone_default channel at 10/01/2013 12:41:13
RMAN-11003: failure during parse/execution of SQL statement: alter system set spfile= '/opt/oracle/db11203/dbs/spfileCU1.ora'
ORA-02097: parameter cannot be modified because specified value is invalid
ORA-01565: error in identifying file '/opt/oracle/db11203/dbs/spfileCU1.ora'
ORA-27037: unable to obtain file status
HPUX-ia64 Error: 2: No such file or directory
With SPFILE I get;
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of Duplicate Db command at 10/01/2013 13:06:34
RMAN-05501: aborting duplication of target database
RMAN-05537: DUPLICATE without TARGET connection when auxiliary instance is started with spfile cannot use SPFILE clause
But I do have RMAN connexion to target database.
Thanks for your help.

Here is the output beginning of the script which clearly shows that I'm always connected to target database:
Recovery Manager: Release 11.2.0.3.0 - Production on Tue Oct 1 13:05:47 2013
Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.
connected to target database: CU (DBID=1143962925)
connected to auxiliary database: CU (not mounted)
RMAN> set echo on
2> run
3> {
4> configure device type disk parallelism 10;
5>   allocate channel pr1 type disk;
6>   allocate channel pr2 type disk;
7>   allocate channel pr3 type disk;
8>   allocate channel pr4 type disk;
9>   allocate channel pr5 type disk;
10>   allocate channel pr6 type disk;
11>   allocate channel pr7 type disk;
12>   allocate channel pr8 type disk;
13>   allocate channel pr9 type disk;
14>   allocate channel pr10 type disk;
15>   allocate auxiliary channel st1 type disk;
16>   allocate auxiliary channel st2 type disk;
17>   allocate auxiliary channel st3 type disk;
18>   allocate auxiliary channel st4 type disk;
19>   allocate auxiliary channel st5 type disk;
20>   allocate auxiliary channel st6 type disk;
21>   allocate auxiliary channel st7 type disk;
22>   allocate auxiliary channel st8 type disk;
23>   allocate auxiliary channel st9 type disk;
24>   allocate auxiliary channel st10 type disk;
25>   duplicate target database for standby from active database
26>   spfile

Standby to active database

Hi All
I am looking for some doc which tell about creation of Active database from standby without DG broker. I am looking for doc for 10g/11g version.
kindly inform me . Thanks in advance.
Thanks
Krishna

Actually my requirement is linke this. we are planning to have exadata serever with high capacity. on the server where my Standby is runing on same machine i >want to have my TEST/DEV database also. and we want cloning of databse on daily basis. so my TEST/DEV will be cloned from standby (using RMAN) and my >Data Guard should also be continue. Now your requirement is very much clear (Initially there was a bit confusion with your subject line :) ). You can have the cloning activity being carried out from the standby to the test database but during this process, the MRP (managed recovery process) on the standby database will have to be stopped. So, it means that, at the time of cloning, log shipping and applying of logs from the primary to the standby would not be carried out.
Before the clone:
On standby:
SQL>alter database recover managed standby database cancel;
Connect to target as the standby database and auxiliary as the test database (Remember your target database (standby) would be in mount stage and the auxiliary >database (dev) would be in nomount stage)
RMAN target sys/pwd@stby axuiliary sys/pwd@dev
RMAN>duplicate target database to 'dev' from active database nofilenamecheck;This would clone your standby database to dev but during the cloning activty you need to cancel the managed recovery on the standby. Once the cloning is done, you need to start the managed recovery on the standby again.
On standby:
sql>alter database recover managed standby database disconnect from session;If you do not cancel the recovery before cloning activity, then you would be getting errors while opening the dev database saying that the "system datafile is inconsistent and needs recovery".
Note: This is tried without dataguard broker (normal sql commands). I have disabled the dataguard broker configuration and normally do not use it.

# of threads required between RAC Primary and RAC Standby

Oracle 11.1.0.7
Primary 3 Node RAC
Standby 2 Node RAC
Our primary (3 nodes) has 4 groups on each node, with the thread# relating to the instance number. For example, we have thread 1, 2, 3 each with 4 multiplexed groups.
Our standby was created with RMAN Duplicate and it also has 3 threads, but there are only 2 nodes.
The purpose of this Data Guard implementation is to migrate our development and acceptance environments to another data center with different hardware.
The new site has been running well and we started migrating development, where we did a switchover to the new environment; our standby databases are now our primary databases. We are going to keep the Data Guard implementation for awhile just to be sure all of the developers and applications are good.
I was going to drop the 3rd thread from the new primary (old standby) because there are only 2 nodes. I can take it down to 2 groups and then receive the error:
ORA-01567: dropping log 9 would leave less than 2 log files for instance play3 (thread 3)
ORA-00312: online log 9 thread 3: '+ASM_FRA_DA/dgplay/onlinelog/group_9.28331.811864225'
This group’s status is:
THREAD# GROUP# MEMBER SEQ STATUS
3 5 +ASM_FRA_DA/dgplay/onlinelog/group_5.8108.813676681             0 UNUSED
6 +ASM_FRA_DA/dgplay/onlinelog/group_6.8109.813676687             0 UNUSED
9 +ASM_FRA_DA/dgplay/onlinelog/group_9.28331.811864225            0 UNUSED
22 +ASM_FRA_DA/dgplay/onlinelog/group_22.18321.811184283           0 UNUSED
Plans are to un-Data Guard these environments to decommission the hardware. At that time I’m sure I can remove thread# because it’s not needed.
My question has to do with the logs needed between primary and standby. What I’m seeing is that the greatest number of threads are needed on each side, but not quite sure why if they are UNUSED. Can anyone elaborate on this? I can find no documentation that talks about this.
Sherrie

Hi,
You could do:
ALTER DATABASE DISABLE THREAD 3;
check status of the groups in the thread, if any of them <> UNUSED, then archive them:
ALTER SYSTEM ARCHIVE LOG GROUP x;
Then drop the groups.
My question has to do with the logs needed between primary and standby. What I’m seeing is that the greatest number of threads are needed on each side, but not quite sure why if they are UNUSED. Can anyone elaborate on this? I can find no documentation that talks about this. Actually a RAC standby can work with just 1 instance started, because the MRP process runs only on 1 instance. Opening the standby is another story.
But of course you should have enough standby redo logs on the standby site to receive redo from the primary site.

How to create a physical RAC standby from a RAC primary on Std Edition 11g

Hi All,
I need to create a physical RAC standby with ASM (2 nodes - Linux) from a RAC primary(2 nodes - linux) with Standard Edition 11g. But I don´t want to use dataguard.
I know that to use dataguard is possible only Enterprise Edition.
Does anybody knows about any documents ID on metalink or any article about this ?
I appreciate if may help me.
Thanks.
Wander(Brazil)

Wander(Brazil) wrote:
Ok, but i need to RAC physical standby with 2 nodes.Yes you can create standby RAC as well and you also can look option of dbvisit which provides high availability even in standard edition with low licensing prices
in detail you can go through with this link http://www.dbvisit.com/products/dbvisit_standby_database_for_oracle_disaster_recovery
>
Wander(Brazil)
     Newbie
Handle:      Wander(Brazil)
Status Level:      Newbie
Registered:      Sep 23, 2005
Total Posts:      116
Total Questions:      21 (20 unresolved)
Name      Wander(BH-Brazil)
Location      BH (Brazil)
Occupation      Database Administrator
>
Please consider closing your old thread as answered.
Edited by: CKPT on May 21, 2013 10:11 AM

'dns' server failed to upgrade the Network Registrar configuration databases!!!

I have problem with installation the Network Registrar 7.2. According to the install log: "The 'dhcp' server failed to upgrade the Network Registrar configuration databases !!! See C:\NetworkRegistrar\Local\temp/dhcp_upgrade_status_log for details." The dhcp_upgrade_status_log is not found on my PC.
Do somebody familar with such problem?
Thank in advance.

Hi Dave,
Any luck on this thread? Where you able to find a work around on this problem? I am encountering also the same problem thou my OCR and Voting Disk are on raw partition.
I have done clean-up using the "dd" command and re-install CRS a couple of times and still with no luck...
Hope RAC gurus can help us on this.
Any help would be much appreciated.
Thanks!

RAC installation with 12c database on IBM AIX server 7.1(64bit)

Dear Team,
We have to configure the RAC with oracle 12C database on IBM AIX server 7.1(64bit).
We are new to the RAC setup with 12c installation. So kindly provide the metalink id for proceeding the above installations.
Thanks
Kumar

Hi,
Refer this document also,
RAC and Oracle Clusterware Best Practices and Starter Kit (AIX) (Doc ID 811293.1)
Regards,
krish.

Rebuild RAC standby

Hi all,
Can anyone give any insight into the steps to rebuild a RAC standby?
My guess is as follows:
The following is all on standby side
1. activate standby r/w
2. Test failover
3. use dbca to delete the database (dbca unregisters instances and services from OCR)
4. use RMAN to recreate the duplicate standby
--creation of logs needs to be done..
5. re-register the instances and services with the OCR
Does seem about right?
Can anyone recommend a document detailing the instructions for re-building a RAC standby after activation?
Thanks in advance.
john

I need a high level view... like task list..
Its a rebuild of an 11gR2 physical RAC standby on Linux RH4.
My guess is I can use dbca to delete the activated standby and then use RMAN to recreate the standby and then manually register the instances and services to the OCR.
My query is the steps with the RMAN creation of the new standby, do I do it in single instance mode and then add standby logs then modify the spfile to reflect cluster_database = true and then register the services and instances and put it in managed standby mode etc..
The bottom line is I need to some offical documentation for the steps involved in recreating an activated RAC standby.
I will contact oracle support.
Edited by: user9179270 on 25-May-2010 04:33
Edited by: user9179270 on 25-May-2010 04:36

Sharepoint 2013 MP - Configuration Database connection failed

Hi all!
I run a WS2012 R2 with SCOM 2012R2. I'm trying to monitor Sharepoint 2013 Farm, with the Sharepoint 2013 MP. The Sharepoint farm and it's SQL server is on another domain, with two-way trust, and the agents are working on the Sharepoint and SQL servers.
I use SQL aliases for Sharepoint DB's, so I've made an override to the connection string to make it connect to the correct database.
The override is working fine, I can see that SCOM is trying to connect to the SQL server, but I cannot seem to make SCOM use the correct Run As account on these configuration databases. Most of the Sharepoint MP seems to be working fine, with the farm admin
account, but I don't know how I can force this override connectionString to use a specific user.
WS2012R2 with SCOM2012R2 UR3
Sharepoint 2013 Farm on WS2008R2 OS.
MS SQL 2012 on WS2008R2.
It uses the default SCOM monitoring account, instead of the Sharepoint RunAs account.
Any suggestions?
How do I make it use the correct Run As account?
(This guy has the
same problem)
Thanks,
Nikolaj

I was looking at this issue not too long ago, and looked through the management pack xml, to see if there was a missing secure reference for DB connection monitors. I only glanced through the MP, but it looked to me as if the DB connection
monitors references the same account as the other sharepoint monitors. (Yes, that full-blown farm admin account). Again I am not sure, but it seems the management pack has trouble using the referenced RunAs account in the connection strings and then, because
the watcher node is setup default to run off the management server, it falls back to the management server action account.
You mention, that you have a two-way trust between you management group and SPS SQL servers. You could then bring this to work by granting your management server action account public rights on your configuration and content DB’s. Not
optimal, but it’s a workaround. For SPS 2013 this should work without changing the connection strings, as you would have to with SPS 2010.
I know this is not solution you’re are looking for, but it just might be enough for you to get a step further. I don’t know of any solution, so far, to get the DB connections to use the SPS RunAs account.

Failed to create configuration database on Sharepoint Foundation 2010 install under Windows 7

Configuration Failed
Failed to create the configuration database.
An exception of type System.IO.FileNotFoundException was thrown. Additional exception information:could not load file or assembly 'Microsoft.IdentityModel, version = 3.5.0.0,culture=neutral, PublicKey Token=31bf3856ad364e35' or one of its dependencies. The
system cannot find the files specified.
I already installed microsoft sharepoint foundation 2010 but I got the error as per above.How to solve this problem?

Hi,
Also check out Bill Baer's post:
Common Microsoft SharePoint Server 2010 Installation Issues and Resolutions
http://blogs.technet.com/b/wbaer/archive/2009/12/11/common-microsoft-sharepoint-server-2010-installation-issues-and-resolutions.aspx
Thanks.
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are trying to better understand customer views on social support experience, so your participation in this
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RAC/Standby enviornment configuration---database wise

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