RAC-Performance degarding with all nodes

Hi,
I have a RAC with 2 nodes.With individual nodes the performance is good and same.But when with 2 nodes together,the performance is degrading from one of the nodes with gc buffer busy as the topmost event.Kindly throw some light on this.

Hi;
Please see below:
RAC gc buffer busy waits !!
RAC gc buffer busy waits !!
High Avg wait for "gc buffer busy" in RAC
High Avg wait for "gc buffer busy" in RAC
Also see:
Wait Event "gc buffer busy"
Regard
Helios

Similar Messages

HOW INCREASE SGA IN ORACLE RAC 10 G WITH 2 NODES

How increase sga_max_size, sga_target in ORACLE RAC 10 G WITH 2 NODES;
i have oracle 10g in unix hp-ux 11i in rac (2 nodes)
with sga 8g; and i want to increase 12g;
i can alter these parameters without shutdown the entire database ?; , i can alter and take these change in one node first and later de second node?
i used in first node :
1- alter system set sga_max_size=16g scope spfile;
2- alter system set sga_targer=12g cope spfile;
later i restard all intance one by one:
srcvtl stop instance -d my_database -i my_instance1 -o immediate;
srcvtl start instance -d my_database -i my_instance1
3- in second node.
srcvtl stop instance -d my_database -i my_instance2 -o immediate;
srcvtl start instance -d my_database -i my_instance2
but my sga is the SAME 8G.. WHY NOT CHANGE...
i changed these parameters and restar my instance in first node later stop and start using srvctl the second node but my sga not change. continue in 8g ;however these changes are in spfile so;
prd2.sga_max_size=8589934592#internally adjusted
prd1.sga_max_size=8589934592#internally adjusted
*.sga_max_size=17179869184
prd2.sga_target=8589934592
prd1.sga_target=8589934592
*.sga_target=12884901888
prd2.thread=2
prd1.thread=1
how i can apply these change node by node or i need shutdown the entire database?
need to make these changes without affecting my application because i can not shutdown the both node...
Edited by: user568681 on 02-sep-2010 14:32

Hi,
I just checked on a test RAC configuration (HP-UX, 10.2.0.4)
You don't need to stop the database.
Keep your "rolling" original scenario but change :
alter system set sga_max_size=16g scope spfile;
alter system set sga_target=12g cope spfile;by
alter system set sga_max_size=16g scope spfile sid = 'PRD1';
alter system set sga_target=12g scope spfile sid = 'PRD1';
alter system set sga_max_size=16g scope spfile sid = 'PRD2';
alter system set sga_target=12g cope spfile sid = 'PRD2';Actually
alter system set sga_max_size=16g scope spfile;
alter system set sga_max_size=16g scope spfile SID='*';changes globally the values for every instance in the spfile ("*.XXXXXX" is updated) but it does not remove the specific entries already assigned to one particular instance (and it is your case !)
Alternatively you could reset the values assigned specifically to one instance with "alter system reset" to have only "*.XXXX" for those parameters.
Best regards
Phil

Performance penalty with property nodes?

In a specific application I have a front panel with three combo boxes and another three string indicators. Based on the selections made in the combo boxes, various messages will have to be displayed in the string displays. This naturally calls for multiple instances in the same VI where the combo boxes will have to be read and string display updates.
One choice would have been local variables ( of combo boxes & string indicators ) for passing the values around. But since this is going to make several copies and hit performance, I decided to use property nodes. And it works fine.
The question is, whether excessive use of property nodes has any adverse effect on performance ?
Thanks
Raghunathan
Raghunathan
LV2012 to Automate Hydraulic Test rigs.

Thanks! I would suggest to just do the experiment.
The attached little demo (LabVIEW 7.1) does the same thing (increment a I32 variable in a loop) in three different ways:
-- shift register
-- local variable
-- value properties
On my slow laptop, 10000 iterations take the following total time in ms.
shift registers: 3ms
Local variables: 5ms
Value Properties: 1891ms (!!)
Notice that the shift register solution would be much faster (more than 10x (or 1000000 in 20ms)) if the indicator is placed outside the loop, the only thing slowing it down is the update of the indicator.
In conclusion value properties are much more expensive than local variables or shift registers. If you just write once e.g. at the beginning of the program, it does not really matter, but once you do things repetitively in a loop, the costs add up. I always prefer wires because they also make the diagram easy to follow. Local variables break the dataflow and can cause race conditions. They have their limited use, especially in user interface related code. They have no business in pure computations.
LabVIEW Champion . Do more with less code and in less time .
Attachments:
timers.vi ‏47 KB

RAC and ASM with geographically seperated disks

We are planning to use RAC and ASM with four nodes. The two nodes will be at one location and another two nodes at different location. The ASM disks also will be available locally. Is it possible to configure ASM with geographycally serepared disks.
We are thinking of two RAC and ASM setups with two nodes each and streams replication between the RACs.
I want to know what is the best method to implement. Is it RAC with four nodes OR two RACs with two nodes each and streams replication between the RACs.

Apart from the latency issue, which has been mentioned by others, you also need to mirror your disks between the two sites and be very careful about split brain scenarios under node or site crashes.
You need to mirror the disks between the sites in case one site crashes completely and loses all network access. The only way the second site can carry on is if it has access to all the data disks, and the cluster control disks (terms vary for this, such as quorum or voting disk). If you do not mirror you simply do not have a resilient design. Resilience is about eliminating all single points of failures, which means duplicating everything i.e. mirroring.
And mirroring between two remote sites adds more volume to the data traffic between the two sites. And it would need to be synchronous rather than asynchronous to guarantee no data loss. And your commits for each transaction would be limited by the round trip time to write to the remote site and get the acknowledgement back.
Split brain is something you need to avoid with remote clusters, and local clusters too. If the network goes down between the two sites and both sites have local copies of all of the data and cluster control disks, which site becomes the primary and which one becomes the standby? You cannot have both sites coming back up as primary with active databases and accepting transactions! At this point you have split brain, and each side is processing transactions independently, and both databases are now deviating from each other with different data changes.
I don't think a 4 node RAC environment split across geographical distances is really viable, except under small transaction volumes, and where response time (transaction time) is not critical. If you have high volumes and need fast transactions then you need to only use local RAC configurations, and replicate between the two sites asynchronously. DataGuard is easier, but you need to decide if you need Streams and how to make it work for you.
John

11gr2 rac installation on vmware runinstaller not able to visible all nodes

Hello,
Recently I have installed two nodes 11gr2 rac on vmware workstation 6 with OEL 5.4. CRS installation work fine. But after that when I do olsnodes, it's shows only one node. Also, when I try to install oracle database binary, in node selection tab, it's shows only respective nodes and not shows all nodes.

Installation of 11gr2 Grid was successfull or not?
Try to check the status of High Availability service daemon by typing the following command:
./crsctl check cluster. (on all nodes)
The output should look like this:
CRS-4537: Cluster Ready Services is online
CRS-4529: Cluster Synchronization Services is online
CRS-4533: Event Manager is online

CRS & RAC with 3 node

Hi EveryBody,
I am planing to install the Rac in my home, i mentioned the following information below.
i am using 3 system with windows 2000 server, i wan to install the oracle 10gR1 RAC.
my question is, for all nodes they need to install the CRS software ???? or one system is enough, and the same time what about the rac software, its enogh to install in one node or install in all node????
senthil

All nodes will will connected to each other with private IPs.......and you just need to install Clussterware and RAC from one node and add those nodes in your installtion. Oracle will install everything on its own on other nodes.
Hope this helps
Luck
Regards

R12 Apps with 4 node RAC and 4 apps nodes - Post Install check list

Hi All,
We have a new Oracle Apps R12 instalaltion with 4 node RAC and 4 Apps nodes with load balancing and external web tier being done by an outside firm. We are assigned the responsibility of checking that everything has been configured properly both on the RAC side and Apps side. I haven't worked on RAC earlier. Please let me know what all need to be checked before approving the install done by the outside firm.
Thank you!

Please check below metalink notes
RAC Assurance Support Team: RAC and Oracle Clusterware Starter Kit and Best Practices (Generic) [ID 810394.1]
Using Oracle 10g Release 2 Real Application Clusters and Automatic Storage Management with Oracle E-Business Suite Release 12 [ID 388577.1]
Using Oracle 11g Release 2 Real Application Clusters with Oracle E-Business Suite Release 12 [ID 823587.1]
Oracle E-Business Suite and Oracle Real Application Clusters Documentation Roadmap [ID 745759.1]
745759.1 Oracle E-Business Suite and Oracle Real Application Clusters Documentation Roadmap
384248.1 Sharing The Application Tier file system in Oracle E-Business Suite Release 12
387859.1 Using AutoConfig to Manage System Configurations with Oracle E-Business Suite Release 12
406982.1 Cloning Oracle Applications Release 12 with Rapid Clone
240575.1 RAC on Linux Best Practices
265633.1 Automatic Storage Management Technical Best Practices
Loadbalancer
note 380489.1 Using Load-Balancers with Oracle E-Business Suite Release 12
note 727171.1 Implementing Load Balancing On Oracle E-Business Suite - Documentation For Specific Load Balancer Hardware
note 601694.1 How To Check Session Persistence On BigIP F5 And Cisco Ace Load Balancer Appliances
note 603325.1 Using Cisco ACE Series Application Control Engine with Oracle E-Business Suite Release 12
Installation R12
note 761564.1 Oracle Applications Installation and Upgrade Notes Release 12 (12.1.1) for Linux x86
note 402310.1 Oracle Applications Installation and Upgrade notes Release 12 (12.0) for Linux (32-bit)
note 559518.1 Cloning Oracle E-Business Suite Release 12 RAC-Enabled Systems with Rapid Clone
note 735276.1 Interoperability notes E-Business Suite R12 with Oracle Database 11gR1
Shared Applications Confiugurations:
note 380483.1 Oracle E-Business Suite Release 12 Additional Configuration and Deployment Options
note 384248.1 Sharing The Application Tier File System in Oracle E-Business Suite Release 12
Edited by: Amigo on Dec 20, 2010 9:58 AM

Performance Problems with "For all Entries" and a big internal table

We have big Performance Problems with following Statement:
SELECT * FROM zeedmt_zmon INTO TABLE gt_zmon_help
FOR ALL ENTRIES IN gt_zmon_help
    WHERE
    status = 'IAI200' AND
    logdat IN gs_dat AND
    ztrack = gt_zmon_help-ztrack.
In the internal table gt_zmon_help are over 1000000 entries.
Anyone an Idea how to improve the Performance?
Thank you!

>
Matthias Weisensel wrote:
> We have big Performance Problems with following Statement:
>
>
SELECT * FROM zeedmt_zmon INTO TABLE gt_zmon_help
>   FOR ALL ENTRIES IN gt_zmon_help
>     WHERE
>     status = 'IAI200' AND
>     logdat IN gs_dat AND
>     ztrack = gt_zmon_help-ztrack.
>
> In the internal table gt_zmon_help are over 1000000 entries.
> Anyone an Idea how to improve the Performance?
>
> Thank you!
You can't expect miracles. With over a million entries in your itab any select is going to take a bit of time. Do you really need all these records in the itab? How many records is the select bringing back? I'm assuming that you have got and are using indexes on your ZEEDMT_ZMON table.
In this situation, I'd first of all try to think of another way of running the query and restricting the amount of data, but if this were not possible I'd just run it in the background and accept that it is going to take a long time.

R12 with 2 node 10g RAC is not updating with autoconfig correctly.

Hi,
we are on R12.0.6 with 2 node 10g RAC. Our collegue did the RAC setup, I was not there at that moment
steps he followed is
1. Installed 10g CRS,ASM 10.2.0.3 software and bring up the two nodes.
2. Configured the RAC DB to Oracle Appplication and registered the Listener with CRS.
Name Type Target State Host
ora....D1.inst application ONLINE ONLINE erpdb1
ora....D2.inst application ONLINE ONLINE erpdb2
ora.ERPPROD.db application ONLINE ONLINE erpdb1
ora....SM1.asm application ONLINE ONLINE erpdb1
ora....B1.lsnr application ONLINE ONLINE erpdb1
ora.erpdb1.gsd application ONLINE ONLINE erpdb1
ora.erpdb1.ons application ONLINE ONLINE erpdb1
ora.erpdb1.vip application ONLINE ONLINE erpdb1
ora....SM2.asm application ONLINE ONLINE erpdb2
ora....B2.lsnr application ONLINE ONLINE erpdb2
ora.erpdb2.gsd application ONLINE ONLINE erpdb2
ora.erpdb2.ons application ONLINE ONLINE erpdb2
ora.erpdb2.vip application ONLINE ONLINE erpdb2
oracle@erpdb1 $
The issue is, in our tnsnames.ora in both the nodes.
===
ERPPROD=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
(CONNECT_DATA=
(SERVICE_NAME=ERPPROD)
(INSTANCE_NAME=ERPPROD1)
instead of
ERPPROD=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
(CONNECT_DATA=
(SERVICE_NAME=ERPPROD)
(INSTANCE_NAME=ERPPROD1)
(INSTANCE_NAME=ERPPROD2)
Node1 tnsnames.ora
oracle@erpdb1 $ cat tnsnames.ora
# This file is automatically generated by AutoConfig. It will be read and
# overwritten. If you were instructed to edit this file, or if you are not
# able to use the settings created by AutoConfig, refer to Metalink Note
# 387859.1 for assistance.
#$Header: NetServiceHandler.java 120.16.12000000.4 2008/04/28 06:39:48 schagant ship $
ERPPROD=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
(CONNECT_DATA=
(SERVICE_NAME=ERPPROD)
(INSTANCE_NAME=ERPPROD1)
ERPPROD1=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
(CONNECT_DATA=
(SERVICE_NAME=ERPPROD)
(INSTANCE_NAME=ERPPROD1)
ERPPROD1_FO=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
(CONNECT_DATA=
(SERVICE_NAME=ERPPROD)
(INSTANCE_NAME=ERPPROD1)
ERPPROD2=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
(CONNECT_DATA=
(SERVICE_NAME=ERPPROD)
(INSTANCE_NAME=ERPPROD2)
ERPPROD2_FO=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
(CONNECT_DATA=
(SERVICE_NAME=ERPPROD)
(INSTANCE_NAME=ERPPROD2)
ERPPROD_FO=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
(CONNECT_DATA=
(SERVICE_NAME=ERPPROD)
(INSTANCE_NAME=ERPPROD1)
ERPPROD2_LOCAL=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
ERPPROD1_LOCAL=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
ERPPROD_BALANCE=
(DESCRIPTION=
(ADDRESS_LIST=
(LOAD_BALANCE=YES)
(FAILOVER=YES)
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
(CONNECT_DATA=
(SERVICE_NAME=ERPPROD)
ERPPROD_REMOTE=
(DESCRIPTION=
(ADDRESS_LIST=
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
LISTENER_ERPPROD1=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
LISTENERS_ERPPROD=
(DESCRIPTION=
(ADDRESS_LIST=
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
extproc_connection_data =
(DESCRIPTION=
(ADDRESS_LIST =
(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROCERPPROD1))
(CONNECT_DATA=
(SID=PLSExtProc)
(PRESENTATION = RO)
IFILE=/u01/app/oracle/product/10/db/network/admin/ERPPROD1_erpdb1/ERPPROD1_erpdb1_ifile.oraoracle@erpdb1 $
oracle@erpdb1 $
=======
Node2 tnsnames.ora
=======
oracle@erpdb2 $ cat tnsnames.ora
# This file is automatically generated by AutoConfig. It will be read and
# overwritten. If you were instructed to edit this file, or if you are not
# able to use the settings created by AutoConfig, refer to Metalink Note
# 387859.1 for assistance.
#$Header: NetServiceHandler.java 120.16.12000000.4 2008/04/28 06:39:48 schagant ship $
ERPPROD=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
(CONNECT_DATA=
(SERVICE_NAME=ERPPROD)
(INSTANCE_NAME=ERPPROD1)
ERPPROD1=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
(CONNECT_DATA=
(SERVICE_NAME=ERPPROD)
(INSTANCE_NAME=ERPPROD1)
ERPPROD1_FO=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
(CONNECT_DATA=
(SERVICE_NAME=ERPPROD)
(INSTANCE_NAME=ERPPROD1)
ERPPROD2=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
(CONNECT_DATA=
(SERVICE_NAME=ERPPROD)
(INSTANCE_NAME=ERPPROD2)
ERPPROD2_FO=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
(CONNECT_DATA=
(SERVICE_NAME=ERPPROD)
(INSTANCE_NAME=ERPPROD2)
ERPPROD_FO=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
(CONNECT_DATA=
(SERVICE_NAME=ERPPROD)
(INSTANCE_NAME=ERPPROD1)
ERPPROD2_LOCAL=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
ERPPROD1_LOCAL=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
ERPPROD_BALANCE=
(DESCRIPTION=
(ADDRESS_LIST=
(LOAD_BALANCE=YES)
(FAILOVER=YES)
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
(CONNECT_DATA=
(SERVICE_NAME=ERPPROD)
ERPPROD_REMOTE=
(DESCRIPTION=
(ADDRESS_LIST=
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
LISTENER_ERPPROD2=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
LISTENERS_ERPPROD=
(DESCRIPTION=
(ADDRESS_LIST=
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb2-vip.domain.com)(PORT=1521))
(ADDRESS=(PROTOCOL=tcp)(HOST=erpdb1-vip.domain.com)(PORT=1521))
extproc_connection_data =
(DESCRIPTION=
(ADDRESS_LIST =
(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROCERPPROD2))
(CONNECT_DATA=
(SID=PLSExtProc)
(PRESENTATION = RO)
IFILE=/u01/app/oracle/product/10/db/network/admin/ERPPROD2_erpdb2/ERPPROD2_erpdb2_ifile.oraoracle@erpdb2 $
=====
Pl let us know how we can achive through autoconfig.
Regards
Vasu

Vasu,
The issue is, in our tnsnames.ora in both the nodes.What is the issue?
I believe the following documents should be helpful in configuring your tnsnames.ora (and other files) with RAC implemented.
Note: 388577.1 - Using Oracle 10g Release 2 Real Application Clusters and Automatic Storage Management with Oracle E-Business Suite Release 12
https://metalink2.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=388577.1
Note: 756050.1 - Troubleshooting Autoconfig issues with Oracle Applications RAC Databases
https://metalink2.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=756050.1
Regards,
Hussein

Search with "Current Node + All Subfolders" not functioning correctly

Hi,
We are having an issue with the search function of SCCM 2012 Admin Console. We have built multi-level folder structure to SCCM which matches our organizational unit structure in AD.
The issue occurs when trying to search with "Current Node + All Subfolders" option in a folder to get listing of all collections nested in the structure. As a result we get incomplete list of collections and majority of them are not showing
up. Sometimes the console even crashes when trying to do this kind of search. Note that this behaviour only occurs when searching inside a folder, not in the device collections root node.
We managed to trace the SQL query in the above situation from SMSProv.log, and it is as follows:
select all SMS_Collection.SiteID,SMS_Collection.CollectionType,SMS_Collection.CollectionVariablesCount,SMS_Collection.CollectionComment,SMS_Collection.CurrentStatus,SMS_Collection.HasProvisionedMember,SMS_Collection.IncludeExcludeCollectionsCount,SMS_Collection.IsBuiltIn,SMS_Collection.IsReferenceCollection,SMS_Collection.LastChangeTime,SMS_Collection.LastMemberChangeTime,SMS_Collection.LastRefreshTime,SMS_Collection.LimitToCollectionID,SMS_Collection.LimitToCollectionName,SMS_Collection.LocalMemberCount,SMS_Collection.ResultClassName,SMS_Collection.MemberCount,SMS_Collection.MonitoringFlags,SMS_Collection.CollectionName,SMS_Collection.PowerConfigsCount,SMS_Collection.RefreshType,SMS_Collection.ServiceWindowsCount from vCollections AS SMS_Collection where (SMS_Collection.SiteID
in (select all Folder##Alias##810314.InstanceKey from vFolderMembers AS Folder##Alias##810314
where (Folder##Alias##810314.ObjectTypeName = N'SMS_Collection_Device'
AND Folder##Alias##810314.ContainerNodeID in
(16777237,16777374,16777384,16777385,16777375,16777376,16777377,16777378)))
AND SMS_Collection.CollectionType = 2) order by SMS_Collection.CollectionName
From this we noticed that not all ContainerNodeIDs are searched, but a list of only 8 ContainerNodeIDs. These ContainerNodeIDs remain the same if the search is done again in the same folder. The same behaviour repeats also in other folders with a different
list of ContainerNodeIDs.
For clarification I'll attach a picture which shows our folder structure with ContainerNodeIDs and ParentContainerIDs. We have also marked the containers which were present in SQL statement. From this you can clearly see there should have been far more ContainerNodeIDs
than listed in the SQL query. Is this a bug in the admin console or could this be a problem with our site database? Is anyone else experiencing similar issues? We have written a custom
powershell script that reads containers from SMS_ObjectContainerNode WMI-class recursively and is able to return complete list of folders and their subfolders, so we assume that our site database and WMI on site server is functioning correctly.
We noticed this on CU2 (could have been present also earlier) and updating to CU3 did not fix the problem. Currently we are running SCCM 2012 SP1 CU3 with one primary site. All components besides distribution point is running on the site server. Distrubution
point is running on a separate server. Our SQL server is running on the site server.
Best Regards,
Juha-Matti

Sorry for the very long delay. I created the ticket in the autumn of last year and just received the final verdict to this issue.
Microsoft support said they were able to reproduce the problem and that they contacted the product group about this issue. It turns out that this behaviour is by design (wait, what?) and since it is by design there is nothing they
can/will do about it.
So the only choice is to request a tailored customization for SCCM2012, which probably in this case (as it is by design) would cost.
I feel a bit puzzled: how can it be by design if it clearly does not work?

I must install and setup TDPO on all nodes RAC?

Hi, everyone
I have oracle rac 9i four nodes and filesystem archivelogs per hosts. without NFS.
my question is. Is necesary to backup de archivelogs install and setup TDPO on each node? and by the way. The node_name is tdpo.config it must be the same on all nodes rac.?
Many Thanks.

A good place to start is http://www.bombich.com/.

2 Node RAC with Single Node Standby Help

Hello Everyone -
I'm preparing to set up a 2 node RAC and use a single-node standby database.
I'm a bit confused on how to set up the Standby Redo Logs on the standby to use the LGWR functionality from the RAC instances.
Should I just create a set of standby redo logs (alter database add standby logfile...) like on a single-instance environment or do I need to create standby logfile threads (alter database add standby logfile thread. . . ) one for each cooresponding thread on the RAC?
It just seems odd that 2 RAC redo threads are able to write to one standby redo logfile at the same time (or maybe each RAC redo thread picks the first available standby redo log and writes to it??)
If anyone has some advice or insight, I'd appreciate it.
Andy

Hello Andy,
Did you get answer to your question about RAC with single standby?
Could you please share with me your experience if you have done so.
Thanks
Amit

Oracle RAC performance

Hello all,
I have a 3 node oracle RAC. Each server has 2 intel quad core processors. I was asked to extend the RAC to 5 nodes to increase the processing power. I was told that Intel 6 core processors are in the market. So I was looking at the following options and need your input/expertise or suggestions on the following options.
Option 1: Add 2 more nodes with 2 quad core processors to the existing 3 node RAC. so total cores available to process the load will be 40 cores.
Option 2: completely replace all the above 5 nodes(in option 1) with 4 nodes - each with 2 * 6 core processors. total cores available are 48 core.
option 2 will give have 1 less server to maintain.
will the performance on option 2 be better than option 1? Any there any white papers or documentation to help me take a decision as to which option i should go?
Thanks in advance.
Raj

hi
I would also first try to tune the database. However it demands some professional skills. There are many areas of tuning.
For example, if your storage subsystem runs slowly (often a bottleneck), then you will not benefit from and node's scaling!
Upgrading hardware is the last thing to do, as it is costly.
If you have a budget, then run for it, buy new "toys", why not, but make sure you hit the performance issue lest you spent money with no improvement...brr
So start with storage, if disks are old e.g. 10k RPM replace them with new 15k RPM, or SSD even.
Run AWR, see "Top 5 events", find the slowest subsystem, if this is I/O then invest in disks, if CPU then CPU, etc.
Replacing old hardware (scale-up) have this benefit, that you don't have to buy all components and install all software from the scratch (OS, add nodes).
Also, however it is not forbidden, but it's been said by Oracle, nodes should have similar performance.
Next thing is that adding more than 3 nodes to the RAC cluster , probably will not improve the overall performance in a linear way, and is more expensive.
My suggestion is to scale-up after inspecting and finding the bottleneck of the cluster performance.
Hope this helps,

MULTIPLE USERS 10G RAC ORACLE_HOME INSTALL WITH ASM/CRS

Hi,
We need to install multiple 10g RAC databases on a two node Sun servers. Below is our configuration:
1) Sun Solaris (ver 10) with Sun Cluster 3.2
2) One ASM/CRS install (by 1 OS account)
3) Four ORACLE_HOME 10g database install (by 4 different OS user accounts)
We would like to use one ASM instance for all four databases with appropriate privileges.
OS User:           OS Group
========      =========
oraasm           dbaasm - (ASM and CRS install owner)
ora1           dbaora1 - first db owner
ora2           dbaora2 - second db owner
ora3           dbaora3 - third db owner
ora4           dbaora4 - fourth db owner
I understand that certain privileges need to be shared between ASM/CRS and DB owners. Please let me know the steps to be followed to complete this install.
Thanks in advance.

Hi
Please read that: Documentation http://download.oracle.com/docs/html/B10766_08/intro.htm
- You can install and operate multiple Oracle homes and different versions of Oracle cluster database software on the same computer as described in the following points:
-You can install multiple Oracle Database 10g RAC homes on the same node. The multiple homes feature enables you to install one or more releases on the same machine in multiple Oracle home directories. However, each node can have only one CRS home.
-In addition, you cannot install Oracle Database 10g RAC into an existing single-instance Oracle home. If you have an Oracle home for Oracle Database 10g, then use a different Oracle home, and one that is available across the entire cluster for your new installation. Similarly, if you have an Oracle home for an earlier Oracle cluster database software release, then you must also use a different home for the new installation.
If the OUI detects an earlier version of a database, then the OUI asks you about your upgrade preferences. You have the option to upgrade one of the previous-version databases with DBUA or to create a new database using DBCA. The information collected during this dialog is passed to DBUA or DBCA after the software is installed.
- You can use the OUI to complete some of the de-install and re-install steps for Oracle Database 10g Real Application Clusters if needed.
Note:
Do not move Oracle binaries from one Oracle home to another because this causes dynamic link failures.
. If you are using ASM with Oracle database instances from multiple database homes on the same node, then Oracle recommends that you run the ASM instance from an Oracle home that is distinct from the database homes. In addition, the ASM home should be installed on every cluster node. This prevents the accidental removal of ASM instances that are in use by databases from other homes during the de-installation of a database's Oracle home.

Performance issues with version enable partitioned tables?

Hi all,
Are there any known performance issues with version enable partitioned tables?
Ive been doing some performance testes with a large version enable partitioned table and it seems that OCB optimiser is choosing very expensive plans during merge operations.
Tanks in advance,
Vitor
Example:
     Object Name     Rows     Bytes     Cost     Object Node     In/Out     PStart     PStop
UPDATE STATEMENT Optimizer Mode=CHOOSE          1          249
UPDATE     SIG.SIG_QUA_IMG_LT
NESTED LOOPS SEMI          1     266     249
PARTITION RANGE ALL                                   1     9
TABLE ACCESS FULL     SIG.SIG_QUA_IMG_LT     1     259     2               1     9
VIEW     SYS.VW_NSO_1     1     7     247
NESTED LOOPS          1     739     247
NESTED LOOPS          1     677     247
NESTED LOOPS          1     412     246
NESTED LOOPS          1     114     244
INDEX RANGE SCAN     WMSYS.MODIFIED_TABLES_PK     1     62     2
INDEX RANGE SCAN     SIG.QIM_PK     1     52     243
TABLE ACCESS BY GLOBAL INDEX ROWID     SIG.SIG_QUA_IMG_LT     1     298     2               ROWID     ROW L
INDEX RANGE SCAN     SIG.SIG_QUA_IMG_PKI$     1          1
INDEX RANGE SCAN     WMSYS.WM$NEXTVER_TABLE_NV_INDX     1     265     1
INDEX UNIQUE SCAN     WMSYS.MODIFIED_TABLES_PK     1     62
/* Formatted on 2004/04/19 18:57 (Formatter Plus v4.8.0) */
UPDATE /*+ USE_NL(Z1) ROWID(Z1) */sig.sig_qua_img_lt z1
SET z1.nextver =
SYS.ltutil.subsversion
(z1.nextver,
SYS.ltutil.getcontainedverinrange (z1.nextver,
'SIG.SIG_QUA_IMG',
'NpCyPCX3dkOAHSuBMjGioQ==',
4574,
4575
4574
WHERE z1.ROWID IN (
(SELECT /*+ ORDERED USE_NL(T1) USE_NL(T2) USE_NL(J2) USE_NL(J3)
INDEX(T1 QIM_PK) INDEX(T2 SIG_QUA_IMG_PKI$)
INDEX(J2 WM$NEXTVER_TABLE_NV_INDX) INDEX(J3 MODIFIED_TABLES_PK) */
t2.ROWID
FROM (SELECT /*+ INDEX(WM$MODIFIED_TABLES MODIFIED_TABLES_PK) */
UNIQUE VERSION
FROM wmsys.wm$modified_tables
WHERE table_name = 'SIG.SIG_QUA_IMG'
AND workspace = 'NpCyPCX3dkOAHSuBMjGioQ=='
AND VERSION > 4574
AND VERSION <= 4575) j1,
sig.sig_qua_img_lt t1,
sig.sig_qua_img_lt t2,
wmsys.wm$nextver_table j2,
(SELECT /*+ INDEX(WM$MODIFIED_TABLES MODIFIED_TABLES_PK) */
UNIQUE VERSION
FROM wmsys.wm$modified_tables
WHERE table_name = 'SIG.SIG_QUA_IMG'
AND workspace = 'NpCyPCX3dkOAHSuBMjGioQ=='
AND VERSION > 4574
AND VERSION <= 4575) j3
WHERE t1.VERSION = j1.VERSION
AND t1.ima_id = t2.ima_id
AND t1.qim_inf_esq_x_tile = t2.qim_inf_esq_x_tile
AND t1.qim_inf_esq_y_tile = t2.qim_inf_esq_y_tile
AND t2.nextver != '-1'
AND t2.nextver = j2.next_vers
AND j2.VERSION = j3.VERSION))

Hello Vitor,
There are currently no known issues with version enabled tables that are partitioned. The merge operation may need to access all of the partitions of a table depending on the data that needs to be moved/copied from the child to the parent. This is the reason for the 'Partition Range All' step in the plan that you provided. The majority of the remaining steps are due to the hints that have been added, since this plan has provided the best performance for us in the past for this particular statement. If this is not the case for you, and you feel that another plan would yield better performance, then please let me know and I will take a look at it.
One suggestion would be to make sure that the table was been recently analyzed so that the optimizer has the most current data about the table.
Performance issues are very hard to fix without a reproducible test case, so it may be advisable to file a TAR if you continue to have significant performance issues with the mergeWorkspace operation.
Thank You,
Ben

RAC-Performance degarding with all nodes

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