Kbase P56508: What is new in Fathom Replication Version 2.0A?
| Autor |
Progress Software Corporation - Progress |
| Acesso |
Público |
| Publicação |
10/16/2008 |
|
Status: Verified
GOAL:
What is new in Fathom Replication Version 2.0A?
GOAL:
What new features are available in Fathom Replication 2.0A?
FACT(s) (Environment):
Fathom High Availability Replication 2.0A
FIX:
Source database logins after Fathom Replication server failure
Source database connections are now allowed after the Fathom Replication server fails for any reason.
Continue source database activity during failure recovery
Source database activity does not halt until the very end of the recovery synchronization process. Once the Fathom Replication server recognizes that there has been a Fathom Replication agent failure, it places itself into a non-processing state. This state allows the RDBMS to continue normal activity as if the Fathom Replication server is not running. The Fathom Replication server is then free to perform failure recovery and recovery synchronization without halting RDBMS activity on the source database. Once the Fathom Replication server catches to the RDBMS, database activity is briefly halted while the synchronization process is completed. Once the synchronization process is complete, database activity continues normally.
Source database activity during startup synchronization
If you want source database activity to begin before the Fathom Replication agent(s) have completed their startup and initialization process, you can use a new Fathom Replication server property named defer-agent-startup. With this property set to a valid non-zero time-out value, source database activity will be allowed before the Fathom Replication server even contacts its configured agent(s).
Minimum and maximum polling delay properties
You can now set a minimum and maximum polling delay for the Fathom Replication server and agent. Both the Fathom Replication server and Fathom Replication agent are self-tuning processes. The new properties allow the Fathom Replication server and agent CPU utilization to be tuned to suit your environment.
Start or restart remote Fathom Replication agent
So that you no longer have to shutdown the source database or use DSRUTIL -C restart Server to have the Fathom Replication server start or restart one or more of its configured Fathom Replication agents, there is a new DSRUTIL action that can be used to start agent(s).
Latency reporting
Fathom Replication Version 2.0A provides latency information that allows you to determine how far behind the source database the target database actually is. This new latency information is provided via the Fathom Replication monitor.
Disable Fathom Replication online
In Version 1.0A, DSRUTIL has the capability to disable Fathom Replication online, but it does not terminate the Fathom Replication server or agent before it does so. In Version 2.0A, this manual step is automated by the utility.
Fathom Replication agent connect time-out
The Fathom Replication agent waits for connection from the Fathom Replication server until the target database is shutdown. In Version 1.0A, the only way to do this was by issuing a forced shutdown. Since a forced shutdown is not the optimal way to shutdown a database, a new agent property has been added to rectify this problem.