Active Session History (ASH) Analytics in Oracle Enterprise Manager Cloud Control 12c

The Active Session History (ASH) was introduced in Oracle 10g to provide real-time diagnostics information. ASH Analytics is a feature of Enterprise Manager Cloud Control 12c, which visualises ASH information, making it even simpler to diagnose performance problems.

ASH requires the Diagnostics and Tuning option in Enterprise Edition.

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Enterprise Manager Database Express in Database 12c Release 1

Introduction

Key things to remember about Enterprise Manager Database Express.

◈ EM DB Express is not Cloud Control or Grid Control!
◈ EM DB Express is not a replacement for the DB Control from 11g, as it has significantly less functionality.
◈ A DBA will not be able to administer the database using just EM DB Express.

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