GoldenGate

Hi,

I'm using GG with filter command, I would like to know the internal process of filter, If I'm using filter or SQLexec COMMAND IN EXTRACT , Whether that particular filter condition is executer against database table or its run against log file itself?

also is it possible to manipulate the data in redolog file itselfe, if not , whether the paricular filter condition will run every for commit. in this case always the command run against db, could you plz clarify how the filter or sqlexec, or sqlprdicat run in inside of the database,????

is there any performance issue will occur?

Thanks in Advance,
Annamalai