OGG-02810
A relative timestamp, such as NOW, was used as starting position for Extract on an Oracle Active Data Guard standby database.
Cause
A relative value was specified as the start position for this Extract. However, only an SCN or timestamp value can be used when capturing data from an Oracle Active Data Guard standby database.
Action
Start Extract at a specific SCN or timestamp. For help with START EXTRACT syntax, issue the HELP command in GGSCI, or see the Oracle GoldenGate reference documentation.