Oracle Advanced Compression option

The Oracle Advanced Compression option contains the following features:
 * Data Guard Network Compression
 * Data Pump Compression (COMPRESSION=METADATA_ONLY does not require the Advanced Compression option)
 * Multiple RMAN Compression Levels (RMAN DEFAULT COMPRESS does not require the Advanced Compression option)
 * OLTP Table Compression
 * SecureFiles Compression and Deduplication

The default RMAN compress (BZIP2 algorithm - higher compression ratio but high CPU usage) does not requires the advanced compression option license. The ZLIB algorithm (less compression ratio but lower CPU usage) requires the license.

References:
 * http://docs.oracle.com/cd/E11882_01/license.112/e10594/options.htm#CJACCDBA
 * http://docs.oracle.com/cd/B28359_01/backup.111/b28270/rcmconfa.htm#BRADV89466