How can I tell if Oracle database is down?

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How can I tell if Oracle database is 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.

How do you check the performance on 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.

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What is Oracle database testing?

The Oracle Real Application Testing option and test data management features of Oracle Database help you to securely assure the integrity of database changes and to manage test data. When performing real-world testing, there is the risk of exposing sensitive data to non-production users in a test environment.

How do you solve database performance issues?

Top 5 Ways To Improve Your Database Performance

  1. Optimize Queries. In most cases, performance issues are caused by poor SQL queries performance.
  2. Create optimal indexes.
  3. Get a stronger CPU.
  4. Allocate more memory.
  5. Data defragmentation.
  6. Disk Types.
  7. Database version.

What are the steps to tune an Oracle database?

Prioritized Tuning Steps

  1. Step 1: Tune the Business Rules.
  2. Step 2: Tune the Data Design.
  3. Step 3: Tune the Application Design.
  4. Step 4: Tune the Logical Structure of the Database.
  5. Step 5: Tune Database Operations.
  6. Step 6: Tune the Access Paths.
  7. Step 7: Tune Memory Allocation.
  8. Step 8: Tune I/O and Physical Structure.
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How do you check if the database is up and running?

How to check if DB is up & running from Application Server?

  1. Write a shell script in App server which connects to DB. Trigger a dummy select statement. If that works then DB is up.
  2. Write a shell script in App server which pings the DB. If ping works then DB is up.

How do you check database performance issues?

Start by checking your wait stats

  1. Ensure your TempDB database is configured optimally.
  2. Make sure you’re running index maintenance frequently.
  3. Implement indexes that provide a benefit to your queries.
  4. Check your most expensive queries and stored procedures.
  5. Monitor your performance counters.

How do you measure database performance?

The following sections provide tips for interpreting the various types of database statistics to measure database performance:

  1. Using Hit Ratios.
  2. Using Wait Events with Timed Statistics.
  3. Using Wait Events without Timed Statistics.
  4. Using Idle Wait Events.
  5. Comparing Database Statistics with Other Factors.
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How is database testing done?

Database Testing is a type of software testing that checks the schema, tables, triggers etc. of the database under test. It involves creating complex queries for performing the load or stress test on the database and check its responsiveness. It checks integrity and consistency of data.