Updating two tables in oracle
Oracle supports multiple data buffer sizes, which you can use to segment and partition disk I/O patterns within the database.
Oracle also allows segregated RAM memory regions for multiple block sizes, giving you complete control over disk I/O patterns.
These tools are used to transfer data from one oracle database to another oracle database.
You Export tool to export data from source database, and Import tool to load data into the target database.
This sequence prevents data from being rejected due to the order in which tables are imported.