How do I monitor my Oracle performance scripts?

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How do I monitor my Oracle performance scripts?

Then I will cover these eight important scripts for monitoring the Oracle database:

  1. Check instance availability.
  2. Check listener availability.
  3. Check alert log files for error messages.
  4. Clean up old log files before log destination gets filled.
  5. Analyze tables and indexes for better performance.
  6. Check tablespace usage.

How do I check my CPU usage OEM?

How to monitor CPU utilization through OEM Grid Control

  1. From the Database Home page, click Performance.
  2. In the Host chart, click Load Average in the right pannel.
  3. Select CPU Details as shown above from the View list.
  4. Verify the current CPU utilization using the CPU Utilization chart as shown below.

What does Oracle Enterprise Manager do?

Oracle Enterprise Manager is a system management tool which provides an integrated solution for managing your heterogeneous environment. It combines a graphical console, agents, common services, and tools to provide an integrated, comprehensive systems management platform for managing Oracle products.

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How do you check the performance of an Oracle database?

By following the performance method explained in Chapter 2, “Oracle Database Performance Method”, you can drill down from the charts to identify the causes of instance-related performance issues and resolve them. To monitor user activity: From the Database Home page, click Performance. The Performance page appears.

What is difference between tablespace and datafile?

An Oracle database consists of one or more logical storage units called tablespaces, which collectively store all of the database’s data. Each tablespace in an Oracle database consists of one or more files called datafiles, which are physical structures that conform to the operating system in which Oracle is running.

How can I tell if Oracle database is up or down?

  1. Check the oracle process runs: On Un*x: ps -ef|grep pmon. On Windows: tasklist|findstr /i oracle.
  2. Go to ORACLE_HOME/bin and run: ./ sqlplus /nolog. If after login you get errors, then the database does not run: SQL*Plus: Release 11.2.0.1.0 Production on Sat Feb 31 21:61:61 2014 Copyright (c) 1982, 2014, Oracle.

Which of the following activity is performed by system monitor when instance starts?

The system monitor process (SMON) performs recovery, if necessary, at instance startup. SMON is also responsible for cleaning up temporary segments that are no longer in use and for coalescing contiguous free extents within dictionary managed tablespaces.

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How do I run enterprise manager?

Starting and Stopping the Oracle Enterprise Manager Console

  1. Navigate into your ORACLE_HOME/bin directory.
  2. Run the following statement: ./emctl start dbconsole.

What is Enterprise Manager in SQL Server?

Enterprise Manager is the main administration console for SQL Server. Enterprise Manager enables you to create database objects (such as databases, tables, views etc), you can configure user accounts, you can set up scheduled tasks, transfer data between databases, and more.

What should I monitor in Oracle database?

With the System Statistics page of the Oracle Database XE graphical user interface, you can monitor the following types of database statistics:

  • Physical Input/Output (I/O)
  • Logical I/O.
  • Memory usage.
  • CPU time and wait events.
  • SQL cursors.
  • Transactions committed.

How performance of a database system is measured?

Database throughput is one of the most important database performance metrics. It is the volume of work done by your database server over a unit of time such as per second, or per hour. It is usually measured as number of queries executed per second.

What are the 4 mandatory table spaces required to run the database?

Default tablespaces in Oracle Oracle comes with the following default tablespaces: SYSTEM , SYSAUX , USERS , UNDOTBS1 , and TEMP .

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How do I view CPU utilization for Oracle server statistics?

Viewing CPU utilization for Oracle Server statistics can be viewed in a variety of ways using standard server-side UNIX and Linux tools such as vmstat, glance, top and sar. The goal is to ensure that the database server has enough CPU and RAM resources at all times in order to manage the Oracle requests.

Is Oracle CPU intensive or CPU friendly?

Oracle has many operations that are CPU intensive, and tuning can reduce CPU: Logical I/O (consistent gets) has high CPU overhead, and buffer touches can be reduced via SQL tuning (adding more selective indexes, materialized views). Library cache contention (high parses) drives-up CPU

Does 100\% CPU usage indicate a CPU problem?

Billy Verreynne, a practicing software engineer in South Africa notes that an Oracle database experiencing 100\% CPU, by itself, does not indicate a CPU problem: The book Oracle Performance Tuning 101″ (2001) by Gaja Vaidyanatha notes this common misperception about the 100\% CPU utilization myth:

How to identify database performance problems in real time?

By drilling down to other pages from the Performance page, you can identify database performance problems in real time. If you find a problem, then you can run ADDM manually to analyze it immediately without having to wait until the next ADDM analysis.