Could anybody explain me what is data guard real time sync ??

This was asked as an interview question to me . am a fresher please help me out..
thanks in advance.

Hi,
I suppose you mean Real Time Apply ? That's very popular mode used when the shipping method of standby databases is synchronous (as you probably know Dataguard support two redolog shipping modes - asynchronous and synchronous). In your case of asynchronous redolog shipping there is one step further - use of Real Time Apply instead of shipping archived logs. So instead of waiting for redologs to become archived (either by database log switch or setting ARCHIVE_LAG_TARGET) and then shipped you could set Real Time Apply where blocks from the log buffer of the primary database are send directly to the standby logs of the standby database. The benefits are obvious - the lag is almost few seconds i.e. changes got applied on the standby few seconds after the primary, you don't have to worry whether the archivelogs are sent or not.
Here is link for more information about Real Time Apply at Oracle documentation Apply Services
Regards,
Sve

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Data guard real time apply vs archived log apply on physical standby

Dear DBA's,
last week i configuared DR , now the phyiscal stanby database is archive apply mode,
i want to confirm is it better to apply the archived log or should i cahnge it to real time apply .
give me sugesstions.
Thanks and Regards
Raja...

One question are you using ARCH transport to move the redo? or have you configured standby redo logs and logwr transport (either async or syncronous), if you are using the archiver to transport the logs then you can not use real time apply.
If you are using log writer to transpor the redo the realtime apply reduces the recovery time required if you need to failover as trher should be less redo to apply to bring the standby up to date, which mode you use to transport redo will depend on what is acceptable in terms of data loss and the impact on performance.

Could anybody explain me what is real time apply and how do we accomplish it ?

Thanks in advance ... please help me outt..

HI Vinayraj
I will write your request as a script. in every morning when start the work you can check the every result via this script. I am using this script. It is satisfactory
bash-3.2$ cat check_standby.sh
#!/bin/sh
ORACLE_HOME="/u01/app/oracle/product/11.2.0/db_1"
export ORACLE_HOME
LD_LIBRARY_PATH="$ORACLE_HOME/lib:/usr/dt/lib:/usr/openwin/lib"
PATH="$ORACLE_HOME/bin:/usr/ccs/bin:/usr/sbin:$PATH"
export PATH LD_LIBRARY_PATH
ORACLE_SID=you-oracle_sid_name
export ORACLE_SID
sqlplus -s <<SQLEND
connect /as sysdba
set pagesize 1000
set linesize 120
column message format A99
column name format A25
column value format a50
select timestamp, message from v\$dataguard_Status;
select name, value from v\$dataguard_Stats;
SQLEND
bash-3.2$
bash-3.2$ cat start_standby.sh
#!/bin/sh
ORACLE_HOME="/u01/app/oracle/product/11.2.0/db_1"
export ORACLE_HOME
LD_LIBRARY_PATH="$ORACLE_HOME/lib:/usr/dt/lib:/usr/openwin/lib"
PATH="$ORACLE_HOME/bin:/usr/ccs/bin:/usr/sbin:$PATH"
export PATH LD_LIBRARY_PATH
ORACLE_SID=you_oracle_sid_name
export ORACLE_SID
sqlplus -s <<SQLEND
connect /as sysdba
startup nomount;
alter database mount standby database;
ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT FROM SESSION;
SQLEND
bash-3.2$

Could anybody explain what is the difference between cloning and refresh

Hi,
Could anybody explain what is the difference between cloning and refresh
What exactly we do in only E-business suite clone(Database and applications) and only database clone and refresh
Regards,
ravi

Welcome to the forum,
Database Cloning includes cloning the ORACLE_HOME of the database and the copying of data from source to target instance.
Database Refresh includes copying of data from source to target instance. ORACLE_HOME is not copied during a Database refresh.
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see this post
http://sabdarsyed.blogspot.com/2008/08/cloning-and-refreshing-oracle-database.html

Could you explaine me what is the diffternce between APO VMI Vs R/3 VMI ?

Hi Experts,
could you explaine me what is the diffternce between APO VMI Vs R/3 VMI ?
Thanks
babu

Hi,
VMI is Vendor managed Inventory. APO can plan for VMI scenario. In a situation, when the stock level at the end customer is known to APO , then APO can plan the requirements at the customer level.
The aim of vendor-managed inventory (VMI) is to integrate key customers in supply chain planning. The customer regularly sends stock and sales data to the vendor, and based on that information, the vendor determines replenishment requirements for the customer
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Regards,
Samir Baruah

Could anybody explain this warning message regarding Posix Performance Pack

Hi,
I am getting following message on my console :
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for fd: '123' with no corresponding table entry>
<Sep 11, 2002 12:40:48 AM GMT+08:00> <Warning> <Posix Performance Pack> <Got exception
for fd: '151' with no corresponding table entry>
I have deployed the WL server on HP-UX 11.0 and wlserver version is 6.1 sp2. Could
anybody explain the warning message ?
TIA
Anirudh

This is a known issue.
Contact [email protected] and ask for "Combined muxer" patch.
Kumar
Anirudh wrote:
Hi,
I am getting following message on my console :
<Sep 10, 2002 7:12:38 PM GMT+08:00> <Warning> <Posix Performance Pack> <Got exception
for fd: '123' with no corresponding table entry>
<Sep 11, 2002 12:40:48 AM GMT+08:00> <Warning> <Posix Performance Pack> <Got exception
for fd: '151' with no corresponding table entry>
I have deployed the WL server on HP-UX 11.0 and wlserver version is 6.1 sp2. Could
anybody explain the warning message ?
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I have I.O.S. 6.0.1 and i live in Georgia, Tbilisi. I have got the problem with maps. It does not get directions. Per exemple it was working in italy but in my cuntry it does not work. Could u explain me what can i do to make my maps work in Georgia?
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Oracle Data Integrator - Real Time Integration

Hi,
I want to know that, is there any possibility of integrating data in real-time using Oracle Data Integrator?
If yes, does it affect the OLTP system performance? (Could it read from db logs,etc..)
Thanks..

Using ODI with Logminer-based CDC will affect performance on the source system more than using Oracle Goldengate, let me explain why:
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HI,
If you know the Exit name, go to transaction CMOD.
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http://sap-img.com/abap/a-short-tutorial-on-user-exits.htm
http://sap-img.com/abap/what-is-user-exits.htm
http://sap-img.com/abap/what-is-the-difference-between-smod-and-cmod.htm
http://sap-img.com/ab038.htm
http://help.sap.com/saphelp_46c/helpdata/en/4a/5b75387be80518e10000009b38f889/frameset.htm
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Hi,
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Thanks for your reply.
I just use MAX to verify that the rs232 port is operational.
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Attachments:
Varian Multi-Gauge Controller.pdf ‏2747 KB
error1.JPG ‏111 KB

Viewing data in real-time and saving on-demand - USB4000 Spectrometer

Hey,
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xyz xyz
xyz xyz
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Attachments:
USB4000 15-07-14.vi ‏18 KB

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Mike...
Certified Professional Instructor
Certified LabVIEW Architect
LabVIEW Champion
"... after all, He's not a tame lion..."
Be thinking ahead and mark your dance card for NI Week 2015 now: TS 6139 - Object Oriented First Steps

Export journalized data in real time

Hello,
I must pull journalized data in real time out of Oracle DB source.
my package has ODIWaiForData operator and interface which triggers only in case of Journalized Data in my source table. Interface loads data to target Oracle table in real time and it works.
Is it possible to send Journalized Data out of Oracle database in real time? Maybe some insert/update statements within sql file, csv file or through ODIOSCommand operator somehow?
Regards

Hi,
did you already see about Logminer?
Cezar Santos
www.odiexperts.com

Can anybody explain me what is interface

hi gurus
can anyone explain me what is interface
tahnk you
regards
kals.

hi
Interfaces are independent structures that allow you to enhance the class-specific public points of contact by implementing them in classes.
Interfaces can be defined globally in the R/3 repository or locally in ABAP program
Can define exactly same components in Interfaces as in Classes
Unlike classes, Interfaces do not have instances, instead they are implemented by classes
Implemented using INTERFACES statement in the declaration part of the class
INTERFACES statement must be included in the PUBLIC SECTION of the class
Different classes that implement the same interface can all be addressed in the same way.
Interface references allow users to address different classes in the same manner.
Interfaces can also be nested.
      Interfaces are the basis for polymorphism in classes, because they allow a single interface method to behave differently in different classes.
If an interface is implemented in the class, the interface components are added in the public section of the class.
A component comp of an interface intf, implemented in a class, becomes a fully-fledged member of that class, with the name intf~comp.
Classes that implement interfaces must implement all of their methods.
     METHOD intf~meth.
     ENDMETHOD.
Interfaces allow you to use different classes in a uniform way (polymorphism).
Interface References
Creating Interface Reference Variables
      DATA obj TYPE REF TO intf.
Using this reference variable, you can access any of the components defined in the interface
Nested Interfaces
Interface can include one or more interfaces as components, which can contain interfaces themselves.
Compound Interface : It includes other interface as its component.
Elementary Interface : It does not include any interface as a component.
All interface components of a compound interface have the same level
A component interface exists only once even if it is used once more as a component of another component interface.
Aliases : It can be used to assign alias names to the components of component interfaces, thus making them visible within the interface definition.
              ALIASES <alias name> FOR intf~comp.
Where, intf = interface name and comp = Component name
Accessing Objects using Interface References
It is also possible to directly generate an object to which the interface reference
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If the interface intf contains an attribute attr and an instance method meth, you can address them as follows:
Using the class reference variable:
Accessing an attribute attr: cref->intf~attr
Calling a method meth: CALL METHOD cref->intf~meth
Using the interface reference variable:
Accessing an attribute attr: iref->attr
Calling a method meth: CALL METHOD iref->meth
Accessing Static Components of Interfaces
Use the name of the interface to access constants within an interface.
Accessing a constant const: intf=>const.
To access the other static components of an interface, use an object reference or the class class that is implementing the interface.
Accessing a static attribute attr: class=>intf~attr.
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Data Guard & Real Application Clusters

Hello, i have a problem with my data guard configuration. I am configuring data guard in a RAC
but i don'n know how to configured the redo sending to the standby database.
I would like any documentation about it.
thanks.

Here are some links:
http://www.oracle.com/technology/deploy/availability/pdf/MAA_WP_10g_RACPrimaryRACPhysicalStandby.pdf
http://www.oracle.com/technology/deploy/availability/pdf/MAA_WP_10g_RACPrimarySingleInstancePhysicalStandby.pdf
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http://download.oracle.com/docs/cd/E11882_01/server.112/e10700/toc.htm
Check out Chapter 3 and Appendices D and F.
Larry

How to switch from data guard really time apply (redo) to archive log

Hi
Standby database configured with broker and applying the redo in really time; however, I want to change this to archive log apply mode without losing the broker configuration. Is it possible? If it is not possible to use broker to do archive log apply, can I remove the broker and use data guard to set up the standby to use archive log apply?
Regards

user3076922 wrote:
Hi
Standby database configured with broker and applying the redo in really time; however, I want to change this to archive log apply mode without losing the broker configuration. Is it possible? If it is not possible to use broker to do archive log apply, can I remove the broker and use data guard to set up the standby to use archive log apply?
RegardsHi
I think mseberg is answered correct, you can use enable/disable apply log with change of state on standby database with DGMGRL, as writen mseberg.
or you can disable recover standby database with following script from SQL*Plus.
SQL> alter database recover managed standby database cancel;Regards
Mahir M. Quluzade
www.mahir-quluzade.com

Could anybody explain me what is data guard real time sync ??

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