Thank you aarroyob but that is not what I need..
I'm searching for GUI tool that could let's say -
count up INITIALs and NEXTs for all tables (perhaps grouping by tablespaces) and could change those values by user request (for example, divide by 10) for every or several tables, and could do some more transformations of export file that can be done..
That is my vision of such tool because after some investigation of format of Oracle database export file I think such tool can be easily written..