这张图记录的关于HTTP常见的错误代码和解释，思路很清晰。对解决常见的HTTP相关的问题，很有帮助。
Reference
https://restlet.com/http-status-map/
https://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.5.1
https://www.w3.org/Protocols/rfc2616/rfc2616.html
Focus On Oracle
Installing, Backup & Recovery, Performance Tuning,
Troubleshooting, Upgrading, Patching, Zero-Downtime Upgrade, GoldenGate
Oracle Exadata ,Oracle ODA, Oracle ZDLRA
