Bidirectional configuration options
When implementing a bidirectional configuration, you must consider the following areas to avoid data integrity issues. These are as follows:
- Loop detection
- Conflict detection
- Conflict resolution
- Replicating Oracle sequences
- Oracle triggers
Let's take a look at the first potential problem (data looping) and how to detect it.
The loop detection
GoldenGate has a built-in loop detection, which is configured through the IGNOREREPLICATES and GETAPPLOPS parameters to prevent local transactions from being replicated and causing endless loops. Another solution would be the TRANLOGOPTIONS EXCLUDEUSER parameter in the Extract process configuration, which effectively blocks the GGADMIN user on the target system (the user associated ...
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