M_15_1.00 Monitoring with Demos and Labs 2012.pdf

7/27/2019 M_15_1.00 Monitoring with Demos and Labs 2012.pdf

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Module 15:Monitoring


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Overview

Formulate requirements and identify resources tomonitor in a database environment

Types of monitoring that can be carried out to ensure:

Maximum availability

Optimal performance

Error-free operations

Availability of tools for monitoring


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Monitoring Availability

Monitoring should cover availability, errors, andperformance of all components of the databaseenvironment

Components to be monitored for availability are:

Node or server

server hardware and all components inthe path from the client

Database listener in SQL Server the listener is part of

the database service

Database monitoring

High-level checks for existence of instance

Low-level ensures work can be performed on the database


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Monitoring Errors

The database and its components return status whensuccessful and error messages of when failure or eventsare encountered

Error messages in Oracle have an error code made up of

a number and a descriptive error messageError messages in SQL Server are composed of:

Unique message number

Severity level

Error state number identifies source

Error message description


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Error Logs

Oracle alert file (alert.log) has equivalent in error logs ofSQL Server

Logs can be read using SQL Server Management Studio

or any text editor

Previous 6 error log files are kept by default but you canconfigure to keep more up to 99

Trace files are not created by default but can be createdmanually using Performance Monitor or Profiler

SQL Server also writes the useful information to theMicrosoft Windows Application log which can be readusing the Event Viewer


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Demonstration: Viewing Logs and Events

In this demonstration you will learn to:

Locate and Review SQL Server Logs


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Demonstration: Error Messages

In this demonstration you will learn to:

Create custom error messages

Use Try..Catch Blocks

Simulate data validation

Review SQL Server Log Entries


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Monitoring Performance

Database server has to be monitored for CPU, memory, processes,virtual memory, network, I/O, and storage

Tools and utilities for monitoring server resources are:

Microsoft Windows Task Manager, Performance Monitor, WindowsExplorer

Monitoring database storage: Database Files size, growth, free space, status, archiving of logs

Tablespaces or Filegroups size, growth, fragmentation, status

Extents size and number of extents allocated to objects,performance of rollback, temporary and sort space


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Monitoring Performance Database and Instance

Monitoring of database instance: Memory performance of subcomponents of SGA

(Oracle) and memory pool (SQL Server)

Processes performance of background and server

processes (Oracle) or worker threads (SQL Server) Sessions and Transactions number and activity of

sessions and resource usage by transactions

Locks and Latches waits for locks and latches, and

deadlocks Parsing parsing activity indicating performance of SQL

and cursors


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Monitoring Tools

Third-Party Tools BMC Software

Performance

Manager for

Databases

Embarcadero

DBArtisan

Computer

Associates

Unicenter

Quest Software

Spotlight

Idera Diagnostic

Manager

Microsoft Windows /SQL Server Tools

Activity Monitor

Performance Data Collector

Management Data Warehouse

DBCC commands Dynamic Management Objects

Extended Events

Performance Monitor

SQL Server Agent

SQL Profiler

System Center Advisor


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Demonstration: Activity Monitor

In this demonstration you will learn to:Use SQL Server Activity Monitor toobserve specific resources and queries.

D t ti S tti Al t t A t t


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Demonstration: Setting Alerts to AutomateMonitoring

In this demonstration you will learn to:Create an Alert based on SQL Serverperformance counter


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Review

We learned that server, database listener, and databaseare the components that need to be monitored

We learned the types of monitoring cover availability,errors, and performance

We saw the operating system tools to checkperformance of server hardware and operating systemcomponents

We learned how the various subcomponents of thedatabase and instance can be monitored using countersand logs

We were introduced to tools for monitoring SQL Serverdatabase and servers such as Performance Monitor, theData Collector and Performance Data Warehouse, SQLServer Agent, and SQL Profiler

Documents

M_15_1.00 Monitoring with Demos and Labs 2012.pdf