Hello Sachin,
I have used the following (all at once) using migmon on more than one occasion:
Parallel Export/Import using FTP + Package Splitting +Table Splitting
Migmon is a simple to use tool and it works perfectly if you perform the operation as per the heterogenous system copy guide.
Parallel Export/Import:
You literally start both export and import in parallel,but the import cannot continue until you have exchanged the export directory content, so that all information about package and table splitting is exchanged in advance before start of downtime.
Package Splitting:
SWPM has screens to do Package Splits are numbered, so each package has a fixed tables that will be included and the import of package is independent on the target system.
Table Splitting:
SWPM has screens to do tablesplits too, you need to specify a file describing table splits. The table splitter (R3ta)creates .WHR files based on input file provided in SWPM which are numbered and essentially SQL queries (not actual select statements, but when you open them you get the idea) with ranges on key fields.
for eg.
split 1 - Records 1 to Records 10
split 2 - Records 10 to Records 20
So while importing, it uses insert statements to import them independently ensuring that there is no overlap.
Note: its not recommended in fact to host any key directories on NFS share.
I never just got down to write it in a blog, but then each OS/DB migration is different and each has its own challenges.
I encourage you to read the hetergenous copy guide for your combination first and then post questions when (or if ) you are actually stuck.
Regards,
Siddhesh