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The exp/imp is the safe way to go; but if you have limited downtime; you may try to run mutible import threads in same time:
1. Create new database on Unix with all DDLs ( can be done with imp option as full=y, rows=n indexes =n)
2. Disalbe archive log
3. Alter those tablespaces that hold the major tables and indexes to "nologging" mode
4. Open muti-import sessions based on different owners or subset of tables ( please consider the referencia constraints make sure the parent tables import first); in both cases; try to set the import option: indexes = n
5. Run one more import for indexes only after all the tables are imported
6. Recompile all invaild objects.
Good luck ! |
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