What is load profile in AWR report?

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What is load profile in AWR report?

Load Profile. This section gives a glimpse of the database workload activity that occurred within the snapshot interval. For example, the load profile below shows that an average transaction generates about 18K of redo data, and the database produces about 1.8K redo per second.

What is an AWR?

Automatic Workload Repository report or AWR report collects, processes, and maintains performance statistics for problem detection and self-tuning purposes. This gathered data is stored both in memory and in the database and is displayed in both reports and views.

What is AWR report in SAP?

Automatic Workload Repository (AWR), a licensed feature of Oracle, is one of the best tools to monitor the performance issues. The report can be generated as of Oracle 10.2 on any platform.

What do AWR reports look for?

The main sections in an AWR report include:

  • Report Summary: This gives an overall summary of the instance during the snapshot period, and it contains important aggregate summary information.
  • Cache Sizes (end): This shows the size of each SGA region after AMM has changed them.
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What is DB time in AWR report?

DB Time is the total time spent by the all user processes which are actively working or actively waiting in the database calls. It includes the CPU Time, IO Wait time and non-idle time.

How do you analyze AWR?

Analysis AWR Report

  1. DB Time(s): Sessions elapsed time in the database.
  2. DB CPU(s): Sessions elapsed time in the CPU.
  3. Redo Size: Redo size ( byte ) between two snapshot.
  4. Logical Reads: Logical read count in the database.
  5. Block Changes: Block changes count between two snapshot.

How do you create AWR?

To generate an AWR Compare Periods report on the local database instance using the command-line interface:

  1. At the SQL prompt, enter: @$ORACLE_HOME/rdbms/admin/awrddrpt.sql.
  2. Specify whether you want an HTML or a text report: Enter value for report_type: html.

What is AWR analysis?

The AWR provides a set of tables into which snapshots of system statistics are stored. Generally these snapshots are taken on an hourly basis and include wait interface statistics, top SQL, memory, and I/O information that is cumulative in nature up to the time of the capture.

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How do I create AWR report in Oracle 12c manually?

To generate an AWR Compare Periods report for Oracle RAC on the local database instance using the command-line interface:

  1. At the SQL prompt, enter: @$ORACLE_HOME/rdbms/admin/awrgdrpt.sql.
  2. Specify whether you want an HTML or a text report: Enter value for report_type: html.

How do I collect AWR reports?

What is SQL module in AWR report?

SQL ordered by Elapsed Time and the (SQL) Module. The Top SQLs can be matched to long running or slow Processes in the application. In this report, look for query has low executions and high Elapsed time per Exec (s) and this query could be a candidate for troubleshooting or optimizations.

What is DB CPU?

The DB CPU Oracle metric is the amount of CPU time (in microseconds) spent on database user-level calls. DB CPU presents the cumulative CPU time from all non-idle sessions. Both statistics directly show database workload and describe overall database response time.

What is Oracle AWR report load profile?

Oracle AWR Report Load Profile. AWR Report Summary. Load Profile. This section gives a glimpse of the database workload activity that occurred within the snapshot interval. For example, the load profile below shows that an average transaction generates about 18K of redo data, and the database produces about 1.8K redo per second.

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What are the features of AWR?

AWR Features. The AWR is used to collect performance statistics including: Wait events used to identify performance problems. Time model statistics indicating the amount of DB time associated with a process from the V$SESS_TIME_MODEL and V$SYS_TIME_MODEL views.

What are the system requirements to use AWR viewer?

A Management Agent 210403.1349 or later is required to use AWR Viewer. AWR Viewer is only available for single instance Oracle Database Enterprise Edition version 12.2 and later. Also, the status of the database must be up for the AWR Viewer button to be enabled.

How do I open the resulting AWR report?

The resulting report can be opend in a browser or text editor accordingly. An example of a HTML AWR report can be seen here. The automated workload repository administration tasks have been included in Enterprise Manager.