Siebel Maximum Availability Architecture Webinar

Oracle invites you to a webinar on Leading Practices of Application Management.
This webinar reviews best practices for the Oracle technology stack and how customers using Oracle's Siebel Customer Relationship Management are leveraging Oracle Real Application Clusters (Oracle RAC); Oracle Clusterware, including disaster recovery strategies; Oracle Enterprise Manager and Maximum Availability Architecture to get peak availability out of their Siebel implementation.
Date & Time: 1/13/2009, 11 a.m. PST / 2 p.m. EST
Presenter: Richard Exley; Consulting Member of Technical Staff, Maximum Availability Architecture
Registration: http://conference.oracle.com/imtapp/app/conf_enrollment.uix?mID=130803325
Passcode: application

Hi Chung,
I will do my best to attend. Will also pass the word along to our customer base.
R
Robert Ponder
Lead Architect and Director
Ponder Pro Serve
cell: 770.490.2767
fax: 770.412.8259
email: [email protected]
web: www.ponderproserve.com

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Maximum Availability Architecture (MAA)

Hi
We are planning to implement Oracleâs Maximum Availability Architecture (MAA).
Does anyone have experience implementing MAA? Can you please provide any guidelines?
Is it possible to set up active/active cluster setup in Oracle 9.2.0.5.0 (Sun Solaris version 9)
Thank you
Ram

Hi
We are thinking of implementing 2 nodes cluster per site. We have 2 sites, one is primary site and other one is secondary site (the sites are 3000KM apart). Plan to use Data Guard (physical maximum availability option).
1)We like to reduce the switchover/Failover time in the cluster setup. Any idea?
Thank you
Ramani

Maximum Availability Architecture for Collaboration Suite

Any one know when the MAA is going to be expanded to include Collaboration Suite?
Does anyone have any ideas about how to run CS in a dual data centre configuration?
(Ever tried getting Exchange to work like this? That's why I want to investigate the above.)
Thanks for you time.
Ian.

Hi Chung,
I will do my best to attend. Will also pass the word along to our customer base.
R
Robert Ponder
Lead Architect and Director
Ponder Pro Serve
cell: 770.490.2767
fax: 770.412.8259
email: [email protected]
web: www.ponderproserve.com

Oracle databaguard maximum maximum availability mode

Hi All,
My database is in maximum availability mode at 9.2.0.8:
SQL> select protection_mode from v$database;
PROTECTION_MODE
MAXIMUM AVAILABILITY
SQL> show parameter log_archive_dest_2
NAME TYPE VALUE
log_archive_dest_2 string SERVICE=XXX.world LGWR SYNC
AFFIRM,
SQL>
Oracle Documentation says:
Maximum availability mode provides the highest level of data protection that is possible without affecting the availability of the primary database. This protection mode is very similar to maximum protection where a transaction will not commit until the redo data needed to recover that transaction is written to both the local (online) redo log and to at least one remote standby redo log. Unlike maximum protection mode; however, the primary database will not shut down if a fault prevents it from writing its redo data to a remote standby redo log. Instead, the primary database will operate in maximum performance mode until the fault is corrected and all log gaps have been resolved. After all log gaps have been resolved, the primary database automatically resumes operating in maximum availability mode.
and it also says.....
The NET_TIMEOUT attribute of the LOG_ARCHIVE_DEST_n parameter specifies the number of seconds the log writer process on the primary system waits for status from the network server process before terminating the network connection. The NONET_TIMEOUT attribute reverses or undoes the timeout value that you previously specified with the NET_TIMEOUT attribute.
If you do not specify the NET_TIMEOUT attribute (or if you specify the NONET_TIMEOUT attribute, the primary database can potentially stall. To avoid this situation, specify a small, nonzero value for the NET_TIMEOUT attribute so the primary database can continue operation after the user-specified timeout interval expires when waiting for status from the network server.
If the log writer process detects a network disconnection, even one that was terminated due to a network timeout, the log writer process automatically tries to reconnect to the standby database. The log writer process does this to resolve network brownouts and false network terminations. In most cases, except when the network is physically broken, the log writer process is able to automatically reconnect to the network.
The log writer process continually attempts to reconnect to the standby database for a period of time that depends on the data protection mode currently set for the primary database. Use the following time estimates as a guideline for how long the log writer process will try to reconnect to the standby database:
In maximum protection mode, the log writer process tries to reconnect for approximately 5 minutes.
In maximum availability mode, the log writer process tries to reconnect for approximately 2 minutes.
In maximum performance mode, the log writer process tries to reconnect for approximately 30 seconds.
question is:
1>Does that mean if primary database is in maximum availability mode and if there is network issue and it cannot communicate with standby database, it will freeze or stall for 2 minutes and then operate in maximum performance mode.
That freeze for 2 minutes in production is pain :(
2>Does it also mean,
In maximum performance mode primary database will freeze fro 30 seconds and then move on.
3> To convert from maximum availability to maximum performance do I need to bounce the primary database at 9.2.0.8

I guess I haven't asked the question correctly,
I have asked 2 different question:
1> do you need to mount your database to downgrade the protection mode, I needed confirmation for that at 9.2.0.8
below is link which shows how to downgrade mode:
http://www.idevelopment.info/data/Oracle/DBA_tips/Data_Guard_9i/DG_70.shtml
2> question is all together seperate,
staying in maximum availability mode what happens if you use 'LGWR ASYNC' or 'ARCH' for log shipping.
Why I am asking this question is because, oracle recommends to use 'LGWR SYNC AFFiRM' for maximum availability mode.
I have tried before 'LGWR ASYNC' or 'ARCH' in maximum availability mode and it worked.
Has any one tried 'LGWR ASYNC' or 'ARCH' in maximum protection mode. does db freezes or stalls.
3> When database stalls for 2 miuntes when it cannot connect to dataguard in maximum availability mode, I cannot see any trace files generated, nothing is written in alert log and nothing in listener.log

MAXIMUM availability with delay

Hi guys,
I am running a dataguard instance with cascaded log shipping currently in MAXIMUM AVAILABILITY mode. We have the following setup. Primary and standby in London and the cascaded standby ( ie. standby shipping logs further to another standby in New york ) is in New york. Now, I need to run the new york standby 3 hours behind. So, is it possible to run the one of the databases in the standby configuration to run behind with the DELAY parameter ? Anyone tried it ? I read in the documentation that the LOG_ARCHIVE_DEST cannot have DELAY parameter while running in MAX AVAILABILITY mode.
Can someone shed light on this ?
BTW, I don't want to change the configuration between both database here in London. They will be running with MAX AVAILABILITY. It is only from the standby to another standby in NEW YORK I wan't the LAG
Thanks in advance
Regards
Edited by: USER101 on Oct 12, 2010 5:16 PM

Hi,
You can write to standby redo logs and archive the same and now try to make a 3 hours detail using in applying the shipped archive log standby.
Also please read ARCHIVE_LAG_TARGET parameter.
Kind Regards,
Rakesh Jayappa

To convert standby from maximum performance to maximum availability

Hi,
I have configured a standby to primary (version:10.2.0). But it is in maximum protection mode. When a logswitch has been done then it is applied at the standby site.
Now I want to convert to maximum availability such that any updation should be applied at the standby.
Can I get the procedure, how should it be done.
thankyou
satyanag

hi
First add standby logfiles to database then follow these commands..
1. set LGWR,SYNC and AFFIRM attributes in the archive destination on primary database.
2. issue this command on primary in mount stage.
ALTER DATABASE SET STANDBY DATABASE TO MAXIMIZE AVAILABILITY
3. Then go to standby ..issue this command...(assuming standby in shutdown mode)
a.startup nomount
b.alter database mount standby database.
c. Alter database recover managed standby database using current logfile;
this last command will not return the cursor..it keeps running....
Now u can check by creating a table on primary ...In case any more detail required then please post the message..
hope it works for u..

Maximum availability during partition move

I understand that the Assistant will be able to run on 9iR2 as well as 10g.
Will the Assistant then be using dbms_redefinition in order to have maximum availability during partition moves (plus any depending index builds and MV refreshes)?

Martin,
In its initial release we will be using standard partition maintenance commands to move data, however we will be looking at whether we can take advantage of DBMS_REDEFINITION.
Lilian

Maximum Availability to Maximum Performance.

steps to change from Maximum Availability to Maximum Performance.
SQL> select protection_mode from v$database;
PROTECTION_MODE
MAXIMUM AVAILABILITY
we need to come down to maximum performance mode due to some performance issues..any suggestions for the steps?

Hi Raman,
Perform below steps:
1) shutdown immediate
2) Startup mount
3)SQL> ALTER DATABASE SET STANDBY DATABASE TO MAXIMIMUM PERFORMANCE;
4)SQL> ALTER DATABASE OPEN;
Note: Issue all these commands on primary server
Hope this should work
Regards,
X A H E E R

Requirement: Siebel URL availability and response time with load balance

Hi,
I Would like to ask a open help about creating a alert for siebel URL downtime (URL Availability), I Should get an alert whenever Siebel URL un-available.
Any Idea of automating from OEM (Oracle Enterprise Manager).
Regards,
Vignesh.

I am not sure about OEM but you can use the default email trigering mechanism that comes with lastest siebel version when component goes down.
http://docs.oracle.com/cd/B40099_02/books/SystAdm/SystAdm_ConfigServer23.html#wp1096046

Applying GI PSU in Maximum Availability Setup

We have 2 node RAC & oracle restart Physical Standby. We want to apply PSU with zero or minimal downtime. Anyone have document to accomplish it.

Hi,
You can use database rolling upgrade as mentioned below link.
http://www.oracle.com/technetwork/database/features/availability/maa-wp-11g-upgrades-made-easy-131972.pdf
Talip Hakan Ozturk
http://taliphakanozturken.wordpress.com/

Can IP SLA determine maximum available bandwidth?

I've searched for this information but all I come up with are articles describing how IP SLA can be used for determining any jitter and latency. By using a network monitoring tool is it possible to determine what the maximum bandwidth of a link is? If so, what data does the tool utilize to determine the link's bandwidth?
I have a gigabit Metro Ethernet link and according to the diagrams from the ISP, it looks like we're only using 100Mbit of it. The routers on each end are 3925E with the HSEC license. I appreciate any help in determining the speed of my link.

I've searched for this information but all I come up with are articles describing how IP SLA can be used for determining any jitter and latency. By using a network monitoring tool is it possible to determine what the maximum bandwidth of a link is? If so, what data does the tool utilize to determine the link's bandwidth?
I have a gigabit Metro Ethernet link and according to the diagrams from the ISP, it looks like we're only using 100Mbit of it. The routers on each end are 3925E with the HSEC license. I appreciate any help in determining the speed of my link.

High available architecture

Hi all,
we are planning to migrate to OBPM 11g.
Can you kindly help me clarify the following?
in OBPM 10g, we had engines and directory schema, so if we have multiple applications, we can easily separate them with separate engines.
How can we achieve this in OBPM 11g?
How do I have separate clusters for each application but common workspace? Is this possible?
How do I load balance?
Thanks,
Alex

HI Manoj,
First of all i hope you have this guide:
http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/206692e2-39e5-2b10-c49d-dce7751605d6?quicklink=index&overridelayout=true
"How To Cluster MDM 7.1 using MSCS".
And to answer your questions:
1.) To my understanding, with Microsoft Cluster we can address only hardware(Physical Machine) failure or operating system failure, but what will happen if the host is running fine and the MDS installed on the host fails. Do we have a mechanism to avoid downtime other than restarting the MDS.
Yes you are right, but whenever a failover occurs in a MDM cluster environment; MDM Server instance on 2nd machine comes up automatically. The only issue is Repositories get unloaded due to failover. And thats why it looks like all work gets stopped. To overcome a maual intervention, there is a parameter in MDS.INI to automatically load repository whenever MDM server starts after failover. Can go through Guide, but its not a foolproof method yet.
2.) Is SAP MDM architecture/ installation similar to other SAP system architectures, for eg: will SAP MDM have
Central Instance, Central Services Installation( Message Server and Enqueue Server),Database Instance,Dialog instance
Additional application server instance. Or it has only MDS, MDSS, MDIS and Database?
It has only MDS, MDSS, MDIS and Database in active passive cluster environment.
3.) SAP MDM forms a part of Netweaver stack along with other applications like PI , BI etc, Does it mean that we have to install netweaver also before we install SAP MDM or it can be installed independently. I mean how SAP MDM is linked to Netweaver in
landscape.
Independent. Linking to other NetWeaver modules is a separate project/assignment itself for techies .
4.) What is the difference between Switchover Cluster and Software Cluster(Redundant application server) since both of them needs two or more host machines.
No Idea. Most probably a Basis guy can help you more.
BR,
Alok Sharma

High Availability architecture design know-how in 9.3.1

Guys,
Is there any toolkit and know-how how to design high avaialbility architecture (clustering) for system 9.3.1 and particularly HFM.
I believe it could be quite different than in 11th version.
Any input most appreciated
Regards,
Rafal

Hi,
Here is how to create users in Shared Services :- http://download.oracle.com/docs/cd/E10530_01/doc/epm.931/html_cas_help/crtuser.htm
The rest of the information for Shared Services is in :- http://download.oracle.com/docs/cd/E10530_01/doc/epm.931/html_cas_help/frameset.htm?apc.html
Cheers
John
http://john-goodwin.blogspot.com/

Sizing a standby system for Maximum Availability

- Having primary and secondary sites with the SAME database server configuration. The server configuration will either be a SMP system with lots of processors or a RAC consisting of a number of
4-way SMP processors.
- Data Guard shall be used for the standby "functionality". From a functional point of view, the standby can be either physical or logical.
- The application is very "update/insert intensive" (~50%).
According to the documentation I've read, the recommendation seems to be to use physical standby,
but I am a little worried about performance using
a multiprocessor system for the "Log Apply Service".
If have understood it right, the RMAN process is single-threaded and can only exist in one instance, while the
LSP process manage several processes/execution threads.
Is it therefore possible that logical standby may have greater throughput than physical standby on a SMP system, or is the "Managed Recovery" always more effective".
Will I have problems wichever solution I chose, i.e
are there other "single-threads" that are likely
to become bottlenecks.
/jan

I think in u'r case standby managed will be a secured option b'coze when ever archives get generated it will be applied there won't be a archive loss

Best Practices and Maximum Availability

We are on the upgrade path going from 10.2.0.4 to 11.2. I was excited when reading about Transient Logical Standby and how it could cut down your time to just a few minutes of outage. However, I found that we are unable to use it because we have data types that can not be used with Logical Standbys. I was hoping that someone could point me to another Whitepaper or documentation of best practices of upgrading with a Physical Standby from 10g to 11g.
Regards
Tim

Thank you for the reference. It is an interesting concept with the transportable tablespaces. I will have to read this in a little more detail. I am not sure how I get my physical standby back into place. I don't want to have to rebuild it...but maybe the document covers that as well (I didn't see it on the first read).
Thanks for the information.
Regards
Tim

Siebel Maximum Availability Architecture Webinar

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