In this release, Oracle Data Pump supports optional index compression on imports, including for Oracle Autonomous Database.
Oracle Data Pump supports adding, changing and eliminating table compression. Oracle Database 21c supports index compression as well by introducing a new
TRANSFORM parameter clause,
INDEX_COMPRESSION_CLAUSE. This clause enables you to control whether index compression is performed during import. Adding this clause also enables you to specify index compression on import with the autonomous services.
This page provides more detailed information about index compression during Oracle Data Pump import.
The practice shows how to use index compression on import operations.