ELEMENT

PERFORMANCE CRITERIA

1. Diagnose problems

1.1. Determine appropriate database performance diagnostictool to use based on organisational database requirements and vendor recommendations

1.2. Run diagnostic tool to identify issues causing degradation of database performance

1.3. Determine and record where inappropriate use of database and temporary table spaces occurs

1.4. Carry out appropriate fixes based on diagnostic results

2. Configure database

2.1. Adopt a distributed files architecture to minimise I/O (input/output) contention

2.2. Ensure that database back-up procedures are appropriate for method of data storage

2.3. Reconfigure rollback segments

2.4. Configure the database and test its performance

3. Tune database

3.1. Track the module performance according to specifications

3.2. Monitor and tune the efficiency of structuredquerylanguage, as required

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

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

3.5. Reconfigure the database according to specifications

Required skills

Analysis capability in relation to normal routine and non-routine work processes

Project planning skills in relation to set benchmarks and identified scope

Report writing skills for business, requiring depth in some areas, analysis and evaluation of information in a defined range of areas

Problem solving skills in non-routine work processes

Required knowledge

Broad knowledge of SQL

Detailed knowledge of database administration

Detailed knowledge of tuning methodologies

General knowledge of the principles of database design

Detailed knowledge of diagnostic tools

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 following is essential:

Assessment must confirm the ability to correctly identify and solve common database problems to improve database performance.

To demonstrate competency in this unit the following resources will be needed:

Diagnostic tools

Database operating on a network

Context of and specific resources for assessment

Resolving database issues can be complex and take considerable time. The core role in this competency is to take part in common database performance problem solving.

All database applications can be performance enhanced with special care and code optimisations.

This unit should be flexible enough to allow for the creation of specialised database programs that are poor in performance so that problem solving processes can be applied.

There are many open source database offerings that may provide a suitable code base from which to work.

The breadth, depth and complexity of knowledge and skills in this competency would cover a broad range of varied activities or application in a wider variety of contexts most of which are complex and non-routine. Leadership and guidance would be involved when organising activities of self and others as well as contributing to technical solutions of a non-routine or contingency nature.

Assessment must ensure:

Performance of a broad range of skilled applications including the requirement to evaluate and analyse current practices, develop new criteria and procedures for performing current practices and provision of some leadership and guidance to others in the application and planning of the skills would be characteristic.

Applications may involve responsibility for, and limited organisation of, others.

Method of assessment

The purpose of this unit is to define the standard of performance to be achieved in the workplace. In undertaking training and assessment activities related to this unit, consideration should be given to the implementation of appropriate diversity and accessibility practices in order to accommodate people who may have special needs. Additional guidance on these and related matters is provided in ICA05 Section 1.

Competency in this unit should to be assessed using summative assessment to ensure consistency of performance in a range of contexts. This unit can be assessed either in the workplace or in a simulated environment. However, simulated activities must closely reflect the workplace to enable full demonstration of competency.

Assessment will usually include observation of real or simulated work processes and procedures and/or performance in a project context as well as questioning on underpinning knowledge and skills. The questioning of team members, supervisors, subordinates, peers and clients where appropriate may provide valuable input to the assessment process.

Guidance information for assessment

The interdependence of units for assessment purposes may vary with the particular project or scenario. Holistic assessment with other units relevant to the industry sector, workplace and job role is recommended, for example:

ICAB4060B Identify physical database requirements

ICAB4061B Monitor physical database implementation

ICAB4136B Use structured query language to create database structures and manipulate

ICAS4108B Complete database back-up and recovery

ICAS4125B Monitor and administer a database

An individual demonstrating this competency would be able to:

Determine performance benchmarks from a database code structure

Apply solutions to improve database performance

Interpret available information and request clarification where needed

Take responsibility for outputs in work and learning situations

Additionally, an individual demonstrating this competency would be able to:

Demonstrate understanding of a broad knowledge base incorporating some theoretical concepts

Apply solutions to a defined range of unpredictable problems

Identify and apply skill and knowledge areas to a wide variety of contexts, with depth in some areas

Identify, analyse and evaluate information from a variety of sources

Take responsibility for own outputs in relation to specified quality standards

Take limited responsibility for the quantity and quality of the output of others

Maintain knowledge of industry products and services

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 tools may include:

software applications external to the database server

the server software or may be inbuilt to the server software

Database may include but is not limited to:

relational databases

object-relational databases

proprietary databases

commercial off the shelf (COTS) database packages

Architecture may include but is not limited to:

Operating system: Novell NetWare 5 or above or any operating system that has multi-user ability, Linux, Mac OS, Windows 2000 or above

Database software: Oracle, Sybase, Microsoft SQL server, Ingres, DB2, Informix, mSQL, MySQL, SQL server

Configuration: small memory model, large memory model, requests per second

Performance may include but is not limited to:

improvements to response time

simultaneous access

latch contention

record or table locking

compacting database files

repairing the database

splitting database files

archiving old records

creating indexes

preventing events causing waits

Structured Query Language may include:

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

Unit sector

Support

This unit contains employability skills.