oracle 12c upgrade exam

Explore Oracle Database Upgrade 9 12.1.0.1Update12.1.0.2 I. Check the current database version and system information [oracle@db01 ~]$ lsb_release -aLSB Version: :core-4.0-amd64:core-4.0-ia32:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-ia32:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-ia32:printing-4.0-noarchDistributor ID: RedHatEnterpriseServerDescri

Tag: Generate MOS log _id download Containe Style size nbsp12C Dbua New Features1. New pre-upgrade check tool.2. Parallel upgrade.3. When upgrading Dbua, the default degree of parallelism is the number of CPUs or 2. The degree of parallelism can be adjusted.4. During the upgrade process, the Dbua tool can be called again (restarted).5. A more detailed log to moni

Label:Explore Oracle's database Upgrade nine12.1.0.1 Update 12.1.0.2First, check the current database version and System Information[[emailprotected] ~]$ lsb_release-alsb Version:: Core-4.0-amd64:core-4.0-ia32:core-4.0-noarch: GRAPHICS-4.0-AMD64:GRAPHICS-4.0-IA32:GRAPHICS-4.0-NOARCH:PRINTING-4.0-AMD64:PRINTING-4.0-IA32: Printing-4.0-noarchdistributor ID:RedHatEnterpriseServerDescription:Red Hat Enterprise Linux Server release 5.8 ( Tikanga) release:5.

12.1.0.2 has been released for some time, with the increase of users, the current version of 12C stability, as well as all aspects of the functionality, get everyone's approval.Many users, need to upgrade the database from a low version to 12C, this article on the upgrade process, do a detailed record. (Suddenly rememb

ah.For this speculation, the customer still wants to know more details, well, let's take a look at the ash situation:Before migration"In Hard parse" ==> 15 line "in Hard parse" ratio: 37.5%2018/03/12 15:26:36---> 2018/03/12 15:37:25.693000000Sql_id:30 AAfter migration"In Hard parse" ==> 252 line "in Hard parse" ratio: 76.6%2018/03/20 11:33:50---> 2018/03/20 12:25:58.591000000sql_id:292 AThe overall time after the migration has not only been significantly prolonged, but the sql_id in ash has inc