Oracle Database Discussions

Hi
I am using Logminer to access the Logs. In this process I am performing the following tasks
1) adding the log files
2) setting the table space by calling the log miner d.set function
3) starting the logminer
4) reading the logs
and 5) closing the session

This process is repeated continuously as is for used for replication.

The question is that do I have to set the Tablespace in each cycle. Is the logmier unassigns the table space when the logminer session is over.

How to handle this thing because setting the tablespace is really time consuming as I have to improve the performance of the system.

Regards