Moving to "Upgrade Support" (the successor to MDS) involves significant additional fees compared to standard maintenance.
Are you bound by specific (like PCI or HIPAA) that mandate active patching? oracle database 11.2 0.4 0 end of support
Oracle Database 11.2.0.4 is by Oracle for security or stability fixes. Running it in production is a significant risk. Immediate planning for migration or upgrade is strongly advised. Moving to "Upgrade Support" (the successor to MDS)
19c is the Long Term Release for the 12.2 family. oracle database 11.2 0.4 0 end of support