DBT-11211 when use AMM on OS whose memory > 4GB

Bugs encountered with database installation

System: Rhel 7.3
Database: Oracle 12.2.0.1.0

Applies to:oracle Database Configuration assistant-version 11.2.0.3 to 12.2.0.1 [Release 11.2 to 12.2]linux X86-64***che Cked for relevance on 18-apr-2017***symptomson Linux, create database with DBCA in systems with more than 4 GB physical me Mory ignores Memory_target and does not set to AMM in 11.2.0.3 or higher version.  This was visible when the database was created in silent mode from a template, ASMM would be set even if Memory_target >0. In interactive mode, the Mark AMM at the corresponding step-it is not being marked by default. Note:in Database 12.2, you could encounter DBT-11211 if use AMM on OS whose memory > 4GB. You have the to do use of ASMM instead of AMM. Causein response to Unpublishedbug 12540053:use Sga_target when the SYSTEM had more THAN 4G of MEMORYDBCA would setup SGA _target and not memory_target when the system had more than 4GB of physical memory. Solutionthis change was intended and is implemented to simplify the starting Point/seed database across platForms, so, huge/large pages can used if configured. On platforms such as Linux there is huge pages limitations in using memory_target that does not affect all platforms. The use of AMM are absolutely incompatible with huge pages on Linux. AMM overwrites huge pages.

DBT-11211 when use AMM on OS whose memory > 4GB