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Module 8: ServerManagement

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Overview

Server-level and instance-level resources such asmemory and processes

Database-level resources such as logical and physicalstorage structures

User sessions and their activity

Concurrency structures

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Managing Memory

Memory is managed at:

Server level

ensure proper memory distribution among database,operating system and applications

Instance level Oracle allows memory needs to be allocated andmanaged by the DBA or automatically managed as it is in SQLServer

The size and performance of the memory components are viewed inOracle using dynamic performance views and OEM

SQL Server performance can be viewed through dynamicmanagement objects, memory related counters using PerformanceMonitor, SQL Profiler, and various DBCC statements

SQLServer:Buffer Manager, SQLServer:Cache Manager,SQLServer:Memory Manager

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Demonstration 1: Using Performance Monitor

Demonstration 1Using Performance Monitor

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Managing Storage

Tasks in managing database files: Expanding the data or transaction log space

Shrinking the data and transaction log space

Adding and removing data and transaction log files

SQL Server transaction logs combine the functions of Oracle redologs and rollback segments

Oracle has multiple fixed-size redo logs which are switched to incyclic order following a checkpoint. SQL Server transaction logs arevariable size and are released after a checkpoint or log backup.

Management of table spaces involves creating, dropping, renaming

and changing status

Because SQL Server uses fixed-size extents, their administrationdoes not involve the same tasks as found in Oracle under certainconfigurations

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Managing Sessions and Transactions

In Oracle, data dictionary tables and views are used torelate sessions, transactions and resources

In SQL Server, views, stored procedures, and utilitiescan be used to provide equivalent data

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Locks and Latches

DBMS monitor lock-related waits using datadictionary views andstored procedures

DBMS use latches/mutexto protect internaldatabase structures

Monitor blocking in SQLServer with BlockedProcess Threshold

Deadlock GraphProfiler event allowsvisualizing deadlockinformation

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Demonstration 2: Capturing Deadlock Information

Demonstration 2

Capturing Deadlock Information

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Review

We learned that server, internal and external databaseprocesses, and database are the components that needto be monitored

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

We saw the operating system tools to checkperformance to 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 server such as Performance Monitor, SQLServer Agent, SQL Profiler, Dynamic Management Views