1. ADVANCE REPLICATION II
Oracle Coretech Surabaya (OCS) One Day Seminar
by Bukhari Yahya

2. AGENDA Introduction Master – View Replication Multimaster & Hybrid
Case 1 (Master – View with subset)
Case 2 (Full Schema & Cross OS & DB)
Troubleshoot

3. Data Subsetting with MView
Reasons :
Reduce Network Traffic
Secure Sensitive Data
Reduce Resource Requirements
Improve Refresh Times
Types :
Object
Column
Row
CREATE MATERIALIZED VIEW hr.employees REFRESH FAST AS
SELECT * FROM
WHERE where department_id=50;

4. Materialized View Row Subset with Subquery
CREATE MATERIALIZED VIEW oe.orders REFRESH FAST FOR UPDATE AS
SELECT * FROM o
WHERE EXISTS
(SELECT * FROM c
WHERE o.customer_id = c.customer_id AND c.credit_limit > 10000);

5. Materialized view Union query
CREATE MATERIALIZED VIEW hr.employees REFRESH FAST AS
SELECT * FROM
UNION
SELECT * FROM

6. Multimaster Jayapura Master Site Master Master Site Site Jakarta
Surabaya

7. Replication Object Tables Indexes
Procedures, Fucntions, Triggers & Packages
Synonyms

8. Step 1 Master Site Setup
Create replication user administrator at every master sites
Create database link
Grant a permission to replicated schema
Schedule

9. Step 2 Master Group
Create Master Group

10. Step 3 Master Replication Object
Create Materialized View Log
Create Master Replication Object
Generate Replication object
Depedency table!!!

11. Step 4 Add Master Site
Add Master Site

12. Multimaster Topology

13. Hybrid
Master
Site
Master
Site
Master
Site
Mview
Site

14. Hybrid Topology

15. Another Hybrid Example

16. Multitier Materialized View

17. Multitier Materialized View

18. Multimaster Vs Materialized View
MView
Supported Object
Tables, Index, PL/SQL
Tables
Two ways replicat.
Yes
Data subsetting
Object
Object, Column, Row
Network Loads
More
Less

19. Designing for Survivability Advance Replication or RAC?

20. Case 1 (Replication :1 Headquarter site, 4 branch site with subset data)
Hq Site
Site 1
Site 4
Site 2
Site 3

21. Materialized View Replication with subset
Hq Site
Master
Site
Site 1
Site 4
Site 2
Site 3
Mview Site
Mview Site
Mview Site
Mview Site

22. Materialized View with subset
Updatable Materialized view using subset criteria query at each branch site :
Create Materialized View … for update as
select ... from … where site_id =

23. Case 2 : Replication Full Schema Cross OS
Master Site
Windows
Master Site

24. Full Schema Cross OS & DB
Mview Site
Windows
Master Site

25. Conflict Resolution Conflict Types : Update Uniqueness Delete
8 prebuilt update conflict resolution methods
timestamp and the overwrite conflict resolution methods are the most commonly use

26. Troubleshoot Troubleshooting Replication Problem : Database Link
Mview Site
Troubleshooting Replication Problem :
Database Link
Refresh Job
Master Site
Master Site

27. Broken Database Link Causes : Network outage
Database Link Target unaccesable
BEGIN
ALTER SESSION CLOSE DATABASE LINK remote_db;
SELECT table_name INTO i
FROM
WHERE rownum = 1;
EXCEPTION
WHEN OTHERS THEN
RAISE_APPLICATION_ERROR(-20999, 'No Connection');
END;

28. Broken Job Prompt entries in the job queue Prompt replication Status:
select job, last_date, last_sec, next_date, next_sec, broken, failures,what
from sys.dba_jobs
where schema_user = 'REPADMIN';
Prompt replication Status:
select sname, master, status
from sys.dba_repcat;

29. Resolve replication Resolve replication alternative :
Re-run related job
dbms_job.run(5);
Re-run related refresh
dbms_refresh.refresh(‘grp1’);
Resume for Master Site :
DBMS_REPCAT.RESUME_MASTER_ACTIVITY('REP_TEST_SETS',true);

30. Oracle Coretech Surabaya (OCS) One Day Seminar
ADVANCE REPLICATION
Oracle Coretech Surabaya (OCS) One Day Seminar
by Bukhari Yahya
Thank You