Oracle Active Data Guard

Oracle Active Data Guard has realtime query. Real time query means your physical standby database to be open read-only while Redo data is coming and apply active.

For example You change PROD database

select salary from employees where employee_id=100;

24000

then you change

update employees set salary=10000 where employee_id=100;

commit;

Up-to-date Meantime connect Physical database

select salary from employees where employee_id=100;

10000;

User connected to a physical standby database can query data that is up-to-date with the primary database.

First you must stop redo data applyfor open phy.standby in read only

DGMGRL>edit database orclstby set state=’apply-off’;

then open database

alter database open;

and last restart redo apply

Dgmgrl>edit database orclstby set state=’apply-on’;

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About oracledocuments

Zekeriya Beşiroğlu, It joined the Bilginc IT Academy in July 2000. In the meantime, the Oracle Education, Oracle Data Base Management System and Oracle Internet Technologies, Oracle development technologies such as the training of Oracle products is responsible for training as consultants. During this task, since 1 April 2008 with 293 Oracle training in total, in 2150 Oracle customers successfully submitted. Oracle 10g New York in November 2002 have received training and education in Turkey was the first time the consultants. 20 April 2008 on education in Turkey 11g is the first who was a consultant. Oracle Real Application Cluster Expert advisor is certified is the first . Http://zekeriyabesiroglu.blogspot.com and Http://www.oracleforum.info owner and manager of the site. Its own has more than one hundred articles. In addition, creation and improvement of training materials are also related to work. Oracle products are used, database management and reporting Academy eruditely It also is working on. From the date of 1 January 2009 will continue to work as the Technical Director
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