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RAC Settings
RAC Settings
Variable Name | Meaning |
---|---|
RAC | Determines whether Dbvisit Standby is part of a RAC (Real Application Cluster) configuration or not. |
Values are Yes or No | |
Yes = Dbvisit Standby is part of a RAC configuration over several instances and nodes. | |
No = Dbvisit Standby is configured for a single instance database. | |
In a RAC environment there will be a DDC file (dbv_instance_name.env) for every primary instance in the Oracle RAC. | |
Example: | |
RAC = Yes | |
RAC_TAKEOVER | Determines if Dbvisit Standby processing on this RAC instance takes over Dbvisit Standby processing for another RAC instance (or node), if that instance or node is not available. |
All archives must be available to all nodes. | |
The variable RAC_TAKEOVER_SID determines which RAC instance will be taken over. | |
The standby database may not be kept up to date if an instance is not available and Dbvisit Standby processing is not taken over by another instance. | |
Values are Yes or No. | |
Yes = Dbvisit Standby (on this instance) will take over from another instance when that instance is unavailable. | |
No = Dbvisit Standby (on this instance) will NOT take over from another instance when that instance is unavailable. | |
If you are not sure, set to Yes. | |
Example: | |
RAC_TAKEOVER = Yes | |
RAC_TAKEOVER_SID | Specify the instance name that Dbvisit Standby processing should take over if that instance is unavailable. |
The instance name must be different to the current instance name. | |
Example: | |
RAC_TAKEOVER_SID = RACDB2 | |
RAC_TAKEOVER_FORCE | Determines if Dbvisit Standby processing on this RAC instance take over Dbvisit Standby processing permanently for another RAC instance (or node). |
Dbvisit Standby processing on this RAC instance will take over Dbvisit Standby processing on another RAC instance regardless of whether that node is available or not. | |
All archives must be available to all nodes. | |
The variable RAC_TAKEOVER_SID determines which RAC instance will be taken over. | |
Values are Yes or No. | |
Yes = Dbvisit Standby (on this instance) will always take over from another instance. | |
No = Dbvisit Standby (on this instance) will NOT take over from another instance unless the instance is not available and RAC_TAKEOVER = Yes. | |
If you are not sure, set to No. | |
Example: | |
RAC_TAKEOVER_FORCE = Yes |