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Evidence Guide: ICADBS404A - Identify and resolve common database performance problems

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

ICADBS404A - Identify and resolve common database performance problems

What evidence can you provide to prove your understanding of each of the following citeria?

Diagnose problems

  1. Determine appropriate database performance diagnostic tool to use based on organisational database requirements and vendor recommendations
  2. Run diagnostic tool to identify issues causing degradation of database performance
  3. Determine and record where inappropriate use of database and temporary table spaces occur
  4. Carry out appropriate fixes based on diagnostic results
Determine appropriate database performance diagnostic tool to use based on organisational database requirements and vendor recommendations

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Run diagnostic tool to identify issues causing degradation of database performance

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine and record where inappropriate use of database and temporary table spaces occur

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Carry out appropriate fixes based on diagnostic results

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Configure database

  1. Adopt a distributed files architecture to minimise input and output (I/O) contention
  2. Ensure that database backup procedures are appropriate for method of data storage
  3. Reconfigure rollback segments
  4. Configure the database and test its performance
Adopt a distributed files architecture to minimise input and output (I/O) contention

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Ensure that database backup procedures are appropriate for method of data storage

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Reconfigure rollback segments

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Configure the database and test its performance

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Tune database

  1. Track the module performance according to specifications
  2. Monitor and tune the efficiency of structured query language (SQL), as required
  3. Monitor and measure the performance of shared pool, blocks and buffers
  4. Detect, identify and resolve contentions that may arise in the real-time operation of the database
  5. Reconfigure the database according to specifications
Track the module performance according to specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Monitor and tune the efficiency of structured query language (SQL), as required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Monitor and measure the performance of shared pool, blocks and buffers

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Detect, identify and resolve contentions that may arise in the real-time operation of the database

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Reconfigure the database according to specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.

Overview of assessment

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Evidence of the ability to:

correctly identify common database problems

select appropriate solutions to solve the problem

implement such solutions to improve database performance.

Context of and specific resources for assessment

Assessment must ensure access to:

diagnostic tools

database operating on a network

appropriate learning and assessment support when required

modified equipment for people with special needs.

Method of assessment

A range of assessment methods should be used to assess practical skills and knowledge. The following examples are appropriate for this unit:

review of candidate’s documentation of problem resolution

direct observation of the candidate using database tools to solve a database problem

evaluation of database after candidate has resolved issues affecting its performance.

Guidance information for assessment

Holistic assessment with other units relevant to the industry sector, workplace and job role is recommended, where appropriate.

Assessment processes and techniques must be culturally appropriate, and suitable to the communication skill level, language, literacy and numeracy capacity of the candidate and the work being performed.

Indigenous people and other people from a non-English speaking background may need additional support.

In cases where practical assessment is used it should be combined with targeted questioning to assess required knowledge.

Required Skills and Knowledge

Required skills

analytical skills to:

detect, identify and resolve contentions in the real-time operation of the database

determine appropriate database performance diagnostic tool to use

literacy skills to record performance test results

planning and organisational skills to:

ensure that database backup procedures are appropriate for the method of data storage

set benchmarks

problem-solving skills to:

carry out appropriate fixes based on diagnostic results

detect, identify and resolve contentions in the real-time operation of the database

determine where inappropriate use of database and temporary table spaces occur

identify issues causing degradation of database performance

technical skills to:

configure the database and test its performance

monitor and measure the performance of shared pool, blocks and buffers

monitor and tune the efficiency of SQL as required

track the module performance according to specifications.

Required knowledge

broad knowledge of:

principles of database design

SQL

detailed knowledge of:

database administration

diagnostic tools

tuning methodologies.

Range Statement

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

Diagnostic tool may include:

server software or may be inbuilt to the server software

software applications external to the database server.

Database may include:

commercial off-the-shelf (COTS) database packages

object-relational databases

proprietary databases

relational databases.

Performance may include:

archiving old records

compacting database files

creating indexes

improvements to response time

latch contention

preventing events causing waits

record or table locking

repairing the database

simultaneous access

splitting database files.

Architecture may include:

configuration:

large memory model

requests per second

small memory model

database software:

DB2

Informix

Ingres

Microsoft SQL (MS SQL) server

Mini SQL (mSQL)

MySQL

Oracle

Sybase

operating system:

Linux

Mac

multi-user ability

Novell NetWare 5 or above

Windows 2000 or above.

SQL may include:

ISO/IEC 9075 (1-4,9-11,13,14):2008:

ISO/IEC 9075-1:2008 Framework (SQL/Framework)

ISO/IEC 9075-10:2008 Object Language Bindings (SQL/OLB)

ISO/IEC 9075-11:2008 Information and Definition Schemas (SQL/Schemata)

ISO/IEC 9075-13:2008 SQL Routines and Types Using the Java TM Programming Language (SQL/JRT)

ISO/IEC 9075-14:2008 XML-Related Specifications (SQL/XML)

ISO/IEC 9075-2:2008 Foundation (SQL/Foundation)

ISO/IEC 9075-3:2008 Call-Level Interface (SQL/CLI)

ISO/IEC 9075-4:2008 Persistent Stored Modules (SQL/PSM)

ISO/IEC 9075-9:2008 Management of External Data (SQL/MED)

proprietary extensions: AS/NZS 3968.0:1994/Amdt 1:1996 Information technology - database languages - SQL - definition of data structures and basic operations

SQL:2008.