Normally the source database will have more logging in redo logs as compared to the target. The reason being that the source database may typically have a subset of its objects in replication. At times the target is observed to have more redo log generated as compared to the source. This solution delves on the common reasons for that to happen.
General information.
Some of the likely causes for a target database to generate more redo logs relative to the source are:
More direct activity on target database, not necessarily on the replicated objects but on other objects, relative to that on the source.
The target database is also involved in replication as a source using different Shareplex instance (port).
Triggers enabled on target tables that may not be present on source tables.
Smaller size of redo logs on target relative to those on the source.
