Clusterware Processes

Clusterware Processes are

1. CRSD ( Cluster Ready service Daemon )

2. CSSD ( cluster syncronized service Daemon )

3. EVMD  ( Event Manger Daemon )

4. CTSD  ( Cluster Time syncronized Service Daemon )  ............


1. CRSD ( Cluster Ready Service Daemon )  :
   
     * it manages the OCR
   
     * it monitors and restarts hasd,failed instances and listener

     *  Generates events ( up, down ) where there is a change in state of  Cluster resources.

     *   Performs failover operations.


2. CSSD ( Cluster Syncronization service Daemon ) :

     * Cssd process will write the information to VD.

     * it performs NHB $ DHB operaitons.

    * node evietion ( reboot 0


3. EVMD ( Event Manager Daemon ):

   * it publishes events ( up,down ) to ONS ( Oracle Notification service )


4. CTSSD ( Cluster  Time Syncronization service Daemon ) :

  *  Inorder to syncronize the data and time


Note :
        i have given above matter just for understanding purpose and what it will do's.