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This is particularly useful in a Parallel Server or RAC application, where you want to observe combined instance statistics. This provides a view of all Oracle instances in the application. To display information on the Tier level, click All Oracle Instances from the Instance list. The Tier, Instance, and Database entities in the Statistics tab display the same type of information. Operating system statistics entity (Oracle 10g and later)Ībout the Tier, Instance, and Database entities.Database time statistics entity (Oracle 10g and later).They appear separately in the user interface. Entities that share the same set of views are grouped into one topic. This section provides an overview of all entities, their meaning, and their views. The Statistics tab displays information on different entities. There is no Association Area data for a wait event. The Tab heading indicates the newly selected entity, and the Main area displays over time graphs for the wait event you drilled down to. If you want detailed information on a wait event, in the Association area, click the row of the event that you want to view detailed information for. Note that the Tab heading and the Main area remain unchanged. The Association area changes to display information on the wait events. When you drill down to another entity, the Tab heading displays the new selection the Main area displays information on the newly selected entity, and the Association area displays the entities associated with the selected entity.įor example, when you want to view information on a specific active session, from the Association controls, click Wait Events. The selection you make is reflected in the Association area only the Main area remains unchanged.įrom the Association area, you can also drill down to another entity by clicking on a row in the table. You can view information on one type of entity at a time, such as instances only, by selecting an item from the Association controls. The Association area in the Statistics tab provides corresponding information on the entities associated with the selected entity (displayed in the Main area). About the Association area in the Statistics tab You can for example focus on Oracle Wait Events or Oracle Memory Allocation, or I/O Activity. You can choose from several views to examine the entity from different angles. The Main area in the Statistics tab shows comprehensive information on the selected entity. About the Main area in the Statistics tab You can view information on an instance by selecting it from the Instance list. The highest-level entity you can view information for in the Statistics tab is the Tier. The selected entity is always reflected in the Tab heading, which serves as a point of orientation. The tab is always launched at the instance level, even if the currently selected entity is not an instance. When you open the Statistics tab from another tab, you will either be focused on an individual instance, or on the entire Tier (if you selected the ALL row in the Dashboard, or All Oracle Instances in the Activity tab). For example, it is possible to associate to all Wait Events that are related to a specific Instance, by selecting the Wait Events entity from the Association controls. The Statistics tab displays information on a selected entity and its associated entities.
#Analyze database oracle 10g how to
This section does describe which Oracle statistics are available in Precise for Oracle and how to use the Statistics tab. For additional information on Oracle statistics and how to tune them, see the relevant Oracle documentation.
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It is not the purpose of this section to define the meaning of each Oracle statistic or how to tune them. Precise for Oracle displays this information when available. For example, operating system-related statistics were introduced in Oracle 10g. With each release of the database, Oracle introduces new statistics. It lets you provide answers to the following types of questions: Is Oracle using resources efficiently? Is the SGA correctly sized? Do our systems have enough memory to enable us to keep adding dedicated server processes? Are we performing too many logical I/Os? You can also use the tab to periodically monitor the health of your instance. The Statistics tab is primarily intended for instance tuning. While examining a single counter is very important, the real value of the Statistics tab lies in examining the ready-to-use sets of graphs that display several related counters. The Statistics tab provides hundreds of raw performance counters. All information is derived from Oracle's own statistics and loaded into the PMDB to provide you with a long-term historical view. The Statistics tab displays statistical information on your Oracle instances. How the Statistics tab can help you identify performance problems.This section includes the following topics: