Database Security Patching from 12.1.0.1 onwards
Database Security Patching from 12.1.0.1 onwards (Note 1581950.1)
Interesting stuff:
Starting with Oracle Database version 12.1.0.1 , Oracle will only provide Patch Set Update (PSU) patches to meet the Critical Patch Update (CPU) program requirements for security patching. SPU (Security Patch Update) patches will no longer be available. Oracle has moved to this simplified model due to the popularity of the PSU patches. PSUs are Oracle's preferred proactive patching vehicle since their inception in 2009 [1].