Versions Compared

Old Version 4

changes.mady.by.user Arjen Visser

Saved on

compared with

New Version 5

changes.mady.by.user Arjen Visser

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

RAC Source environment

To install and configure Dbvisit Replicate on RAC there are some special considerations:

  1. Dbvisit Replicate should be installed on all RAC nodes. Use shared storage to hold the configuration and PLOG directories so that this is accessible from all nodes to ensure that if Dbvisit Replicate is run from another node, it can continue where it left off. 
  2. Ensure Dbvisit Replicate is only ever active on ONE node in the RAC cluster. Dbvisit Replicate will mine ALL the redo threads from the one node.
  3. Ensure all redo threads are on shared storage and accessible from all nodes. This is to ensure that Dbvisit Replicate will be able to mine all redo threads from one particular node. 
  4. Configure Dbvisit Replicate to use the TNS alias that will connect to the RAC database and not the individual instances. This is similar to how an application connects to the RAC database. 
  5. Use Oracle services to start Dbvisit Replicate on another node, if the node that currently runs Dbvisit Replicate fails. Dbvisit Replicate will ensure that the replication will restart from the same point where if failed. 

RAC target environment

To install and configure Dbvisit Replicate on RAC there are some special considerations:

  1. Dbvisit Replicate should be installed on all RAC nodes. Use shared storage to hold the configuration and PLOG directories so that this is accessible from all nodes to ensure that if Dbvisit Replicate is run from another node, it can continue where it left off. 
  2. Ensure Dbvisit Replicate is only ever active on ONE node in the RAC cluster. 
  3. Configure Dbvisit Replicate to use the TNS alias that will connect to the RAC database and not the individual instances. This is similar to how an application connects to the RAC database. 
  4. Use Oracle services to start Dbvisit Replicate on another node, if the node that currently runs Dbvisit Replicate fails. Dbvisit Replicate will ensure that the replication will restart from the same point where if failed. 

RAC configuration

For Oracle RAC, install the Dbvisit Replicate software on all RAC nodes in the cluster. Dbvisit Replicate will only ever be active on one node (however Dbvisit Replicate will mine all RAC threads simultaneously) and Oracle clusterware is used to start Dbvisit Replicate on another node should the current node go down. 

...