{"id":130,"date":"2007-03-24T09:46:00","date_gmt":"2007-03-24T13:46:00","guid":{"rendered":"http:\/\/onlineappsdba.com\/?p=130"},"modified":"2012-10-01T13:34:18","modified_gmt":"2012-10-01T17:34:18","slug":"oracle-internet-directory-replication","status":"publish","type":"post","link":"https:\/\/onlineappsdba.com\/index.php\/2007\/03\/24\/oracle-internet-directory-replication\/","title":{"rendered":"Oracle Internet Directory Replication"},"content":{"rendered":"

Top three reasons for implementing OID<\/span><\/span> Replication:<\/strong><\/p>\n

1. Local Accessibility and Performance requirement.<\/strong>
\n— All major enterprise operate on geographically separated location with common directory and remote location are interconnected with low bandwidth its good idea to move to OID<\/span><\/span> replication based on geographical locations for improved performance and local accessibility<\/p>\n

2. High Availability & fault tolerance.<\/strong>
\n— Implementing Directory Server on two or more replicated (multimaster<\/span><\/span>) servers provide High Availability and better fault tolerance.<\/p>\n

3. Better return on Investment.
\n<\/strong>—Deploying replicated OID<\/span><\/span> in two or more small servers is always better in terms of Return of Investment (Scalable to increasing user load)<\/p>\n

Type of replication <\/strong>(Single Master, Multi Master, Fan-Out)
\nSingle Master<\/strong>: Only one supplier (Users can edit entry) and many consumers (Users can only read but not edit). Use LDAP<\/span><\/span> or DB advanced replication protocol
\nMulti Master:<\/strong> Replica OID<\/span><\/span> are Supplier as well consumer at same time from other Replica OID<\/span><\/span>. Using DB Advanced replication only (can’t be achieved by LDAP<\/span><\/span> based replica)
\nFan Out:<\/strong> A supplier replicating one consumer which in turn is updating other consumers.<\/p>\n

<\/strong>
\nThree command line tools which you can use to monitor and troubleshoot OID<\/span> replication are<\/p>\n

OID<\/span><\/span> Replication Management Tools<\/strong>
\nremtool<\/span><\/span>: <\/strong>Replication Environment Management Tool
\noidreconcile<\/span><\/span>:<\/strong> OID<\/span><\/span> Reconciliation Tool
\nhiqretry<\/span><\/span>:<\/strong> Human Intervention Queue Manipulation Tool<\/p>\n

Apart from this you can use GUI tool i.e. oidadmin<\/span> to administer Member of Directory Replication Group<\/p>\n

Key Points you should know for OID<\/span><\/span> Replication:<\/strong>
\nOID<\/span><\/span> Replication Architecture is based on loose connectivity model (Two Replica Directory are not guaranteed<\/span> to be consistent in real time)<\/p>\n

In my coming posts I’ll explain architecture of Multi Master Replication with processes at both Supplier and Consumer side (All Nodes in Multi Master replication act as both consumer and supplier)<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Top three reasons for implementing OID Replication: 1. 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