In your database environment a log switch occurs every 2 minutes. Oracle recommends to increase the redo log size to 4gb to slow down the log switches
Oracle recommends switching of logs every 15 minutes
Shareplex does not support redo logs greater than 2Gb.
Starting with SharePlex version 6.x Oracle redo logs can be greater than 2Gb. For more details refer to the V6.1 Release Notes. This can be downloaded from https://support.quest.com/SUPPORT/index?page=downloads