When XML data is stored using a SecureFiles LOB of less than 4 KB, the evaluation in a SQL WHERE clause of Oracle SQL condition XMLExists or Oracle SQL function XMLCast applied to the return value of Oracle SQL function XMLQuery can sometimes be offloaded to an Oracle Exadata Storage Server.

Minimum software required: Oracle Database 12c Release 2 (12.2.0.1.0) and Oracle Exadata Storage Server software release 12.2.1.1.0.