I will read first...brb
In addition to Shaik's note, please review the following articles:
Manually Purge the Optimizer Statistics & AWR Snaphots to Reduce Space Usage of SYSAUX Tablespace (Doc ID 1965061.1)
Troubleshooting Issues with SYSAUX Usage by the Automatic Workload Repository (AWR) (Doc ID 1399365.1)
General Guidelines for SYSAUX Space Issues (Doc ID 552880.1)
How to Address Issues Where AWR Data Uses Significant Space in the SYSAUX Tablespace (Doc ID 287679.1)
Suggestions if Your SYSAUX Tablespace Grows Rapidly or Too Large (Doc ID 1292724.1)
When you wanted to reclaim the space at OS level, please discuss it with Database team.
Please perform it on test instance first.