Code: ORA-01353
Description:
 existing Logminer session
Cause:
 An attempt was made to execute DBMS_LOGMNR_D.SET_TABLESPACE
while a Logminer session(s) was active.
Action:
 An attempt was made to execute DBMS_LOGMNR_D.SET_TABLESPACE
while a Logminer session(s) was active.