What's New in Database Lifecycle Management in Enterprise Manager 12c Release 3
By HariSrinivasan on Jul 02, 2013
Enterprise Manager 12c Release 3 includes improvements and enhancements across every area of the product. This blog provides an overview of the new and enhanced features in the Database Lifecycle Management area. I will deep dive into specific features more in depth in subsequent posts.
"What's New?" In this release, we focused on four things:
· Leveraging new framework capabilities for lifecycle operations, such as the new advanced ‘emcli’ script option
· Refining features such as configuration search and compliance
· Rollback support for Single instance databases
· Improved "OFFLINE" Patching experience
· Faster collection of ORACLE_HOME configurations
Lifecycle Management Support for new Database 12c - Pluggable Databases
Database 12c introduces Pluggable Databases (PDBs), the brand new addition to help you achieve your consolidation goals. Pluggable databases offer unprecedented consolidation at database level and native lifecycle verbs for creating, plugging and unplugging the databases on a container database (CDB).
Enterprise Manager can supplement the capabilities of pluggable databases by offering workflows for migrating, provisioning and cloning them using the software library and the deployment procedures. For example, Enterprise Manager can migrate an existing database to a PDB or clone a PDB by storing a versioned copy in the software library. One can also manage the planned downtime related to patching by migrating the PDBs to a new CDB.
While pluggable databases offer these exciting features, it can also pose configuration management and compliance challenges if not managed properly. Enterprise Manager features like inventory management, topology associations and configuration search can mitigate the sprawl of PDBs and also lock them to predefined golden standards using configuration comparison and compliance rules.
Currently, customers resort to cumbersome methods to create, execute, track and monitor change activities within their data center. Some customers use traditional tools such as spreadsheets, project planners and in-house custom built solutions. Customers often have weekly sync up meetings across stake holders to collect status and updates. Some of the change activities, for example the quarterly patch set update (PSU) patch rollouts are not single tasks but processes with multiple tasks. Some of those tasks are performed within Enterprise Manager Cloud Control (for example Patch) and some are performed outside of Enterprise Manager Cloud Control. These tasks often run for a longer period of time and involve multiple people or teams.
Enterprise Manger Cloud Control supports core data center operations such as configuration management, compliance management, and automation. Enterprise Manager Cloud Control release 18.104.22.168 leverages these capabilities and introduces the Change Activity Planner (CAP).
CAP provides the ability to plan, execute, and track change activities in real time. It covers the typical datacenter activities that are spread over a long period of time, across multiple people and multiple targets (even target types).
Here are some examples of Change Activity Process in a datacenter:
Managers can create change activity plans for various projects, allocate resources, targets, and groups affected. Upon activation of the plan, tasks are created and automatically assigned to individual administrators based on target ownership. Administrators (DBAs) can identify their tasks and understand the context, schedules, and priorities. They can complete tasks using Enterprise Manager Cloud Control automation features such as patch plans (or in some cases outside Enterprise Manager). Upon completion, compliance is evaluated for validations and updates the status of the tasks and the plans.
Improved Configuration & Compliance Management of a large number of systems
Enterprise manager 12c introduces a new framework level capability to be able to script and stitch together multiple tasks using EMCLI. This powerful capability can be leveraged for lifecycle operations, especially when executing a task over a large number of targets. Specific usages of this include, retrieving a qualified list of targets using Configuration Search and then using the resultset for automation. Another example would be executing a patching operation and then re-executing on targets where it may have failed. This is complemented by other enhancements, such as a better usability for designing reusable configuration searches.
IN EM 12c Rel 3, a simplified UI makes building adhoc searches even easier. Searching for missing patches is a common use of configuration search. This required the use of the advanced options which are now clearly defined and easy to use.
emcli get_targets -config_search="Databases on Exadata" –target_name="%“
Invoke the script in the new EMCLI with script option directly:
$<path to emcli>/emcli @myPSU_Patch.py
Richer compliance content:
Customers often maintain local repositories of patches, sometimes called software depots, where they host the patches downloaded from My Oracle Support. In the past, you had to move these patches to your desktop then upload them to the Enterprise Manager's Software library through the Enterprise Manager Cloud Control user interface.
The upload process filters all of the new patches, automatically selects the relevant metadata files from the location, and uploads the patches to software library.
Improved and faster configuration collection of Oracle Home targets can enable more reliable automation at higher level functions like Provisioning, Patching or Database as a Service.
Just to recap, here is a list of database lifecycle management features:
* Red highlights mark – New or Enhanced in the Release 3.
o Migration to Pluggable databaseso Plugging and unplugging of pluggable databaseso Gold image based cloningo Scaling of RAC nodes
o Patch advisories in online (connected with My Oracle Support) and offline modeo Patch pre-deployment analysis, deployment and rollback (currently only for single instance databases)o Reporting
For more information on Enterprise Manager’s database lifecycle management capabilities, visit http://www.oracle.com/technetwork/oem/lifecycle-mgmt/index.html