Oracle Database Cloud 'How To' Webcast Series - YouTube Videos

Following is a link for a very good YouTube how to video on Oracle Cloud:

https://www.youtube.com/playlist?list=PLdtXkK5KBY55SLBlD39fS8530_QJB8d2f

It includes following videos:

• Choosing the Right Oracle Database Cloud Service

• Oracle Database Cloud Service Deployment Choices

• Oracle RAC on Oracle Database Cloud Services

• Oracle RAC on Oracle Database Cloud Bare Metal Services

• Oracle Database Cloud Services Security (Part 1)

• Oracle Database Cloud Services Security (Part 2)

• Service Management using the Cloud Console

• Enterprise Manager Cloud Control

• Application and Database Migration to Oracle Cloud

• Database Creation from Cloud Backup

• Oracle Database Backup Service Overview

• Pluggable Databases on Oracle Cloud

• Multitenant Application Containers

Don't wait for 12.2.0.2 anymore, but Oracle 18

According the latest Oracle note - Release Schedule of Current Database Releases (Doc ID 742060.1), Oracle has changed its release schedule/name since 12.2.0.2.

It means:

Oracle 12.2.0.2 = Oracle 18

Oracle 12.2.0.3 = Oracle 19

But it does say  "This may change in the future to Oracle 20 as the last release for 12.2. "

You can read 2 blogs from Mike about the change:

https://mikedietrichde.com/2017/08/09/news-new-oracle-database-release-schedule/

https://mikedietrichde.com/2017/08/10/thoughts-new-oracle-database-release-schedule/

DBCA fails to create 12.1.0.2 RAC database over 12.2 GI/ASM

When creating 12.1.0.2 RAC CDB on newly created 12.2.0.1 GI/ASM by using DBCA, the database creation failed with errors ORA-19504/.ORA-17502

By checking Oracle metalink, it is an Oracle bug (#21626377)  - RDBMS instance fails to identify the required disks to mount a disk group if compatible.asm of the diskgroup is higher than version of the software.

You can refer to the metalink note (Doc ID 21626377.8) for details. There are 2 ways to fix the issue:

1. Apply the BP 12.1.0.2.170418 (or later BPs) - 12.1.0.2.170718 (Jul 2017) Database Patch Set Update (DB PSU) - on Oracle 12.1.0.2 RDBMS home, so DBCA can create 12.1.0.2 database using the ASM diskgroup with compatible.asm set to 12.2.

2. Workaround 

- Create an ASM diskgroup with compatible.asm set to 12.1 and then try to create the 12.1 database.