C2090-919 Informix 11.70 System Administrator

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C2090-919: Informix 11.70 System Administrator

Test information:

Number of questions: 63
Time allowed in minutes: 90
Required passing score: 60%
Languages: English

Related certifications:

IBM Certified System Administrator – Informix 11.70

The test contains eight sections totalling approximately 63 multiple-choice questions. The percentages after each section title reflect the approximate distribution of the total question set across the sections.

Section 1 – Installation and Configuration (12.5%)

Determine appropriate connection types and communication protocols

Plan for Distributed System capabilities

Determine the number and size and placement of logical and physical logs to accommodate transaction activity

Determine when an instance can/should use AIO or KAIO

Set up Operating System files and parameters

Deployment assistant/ Deployment utility

Knowledge of migration and upgrading

Knowledge of installation order for multiple products

Prepare and use of user defined types

Section 2 – Space Management (19%)

Configure and manage dbspaces and sbspaces

Knowledge of OLTR

Knowledge of storage pool mgmt

Knowledge of extendable chunks

Knowledge of pro-active/reactive space allocation

Knowledge of fragmentation and database design (online attach/detach)

Knowledge of compression

Section 3 – System Activity Monitoring and Troubleshooting (14%)

Monitor and isolate problems using system databases

Monitor the message log file for abnormal activity

Use the Informix utilities to view information about the database server

Use the admin API to view information about the database server

Use of concurrency and locking

Section 4 – Performance Tuning (16%)

Configure online shared memory parameters

Determine optimal disk layout and configuration

Utilize Parallel Database Query (PDQ) to optimize query performance

Use UPDATE STATISTICS to achieve optimal performance

Configure system for optimal checkpoint duration, recovery logs, auto checkpoints

Monitor the number of Virtual Processors (VPs) needed for the resources available

Manage network parameters for optimal communication performance

Knowledge of DSS vs OLTP tuning differences

Manage temporary tables and files

Section 5 – Backup and Restore (8%)

Select the appropriate backup and restore strategy and restore utilities for a particular situation

Configure Onbar parameters for optimal backup and restore performance

Configure ontape parameters for optimal backup and restore performance

Use of operation modes

Section 6 – Replication and High Availability (10%)

Demonstrate the ability to manage and configure ER

Demonstrate the ability to manage and configure GRID

Demonstrate the ability to manage and configure Mach 11 and HDR

Demonstrate knowledge of Connection Manager

Section 7 – Warehousing (8%)

Knowledge of Multi-index Star Join, Snow Flake support

Knowledge of Fragmentation

Knowledge of merge and external tables

Section 8 – Security (12.5%)

Knowledge of Non OS users

Knowledge of SRL auditing / auditing

Knowledge of trusted context

Knowledge of authentication, authorization, and encryption

Knowledge of privileges

Demonstrate ability to configure a secure DBMS – Role separation

IBM Certified System Administrator – Informix 11.70
Job Role Description / Target Audience

This certification exam certifies that the successful candidate has important knowledge, skills, and abilities necessary to install, administer and tune, configure, monitor, and troubleshoot Informix v11.70

Recommended Prerequisite Skills

Significant experience with intermediate or advanced level skills as an Informix v11.70 system/database administrator.

Which sysmaster table can be queried to find the logging status of a database?

A. sysdb
B. sysdblog
C. sysdatabases
D. sysdblogstatus

Answer: C


What output is NOT reported by the dbschema utility?

A. The database logging mode.
B. The schemas of remote databases.
C. The table definitions without owner names.
D. The onspaces commands to re-create your systems’ dbspaces.

Answer: A


Which command line utility displays real time statistics about the instance?

A. dbinfo
B. onstat
C. dbschema
D. onmachinfo

Answer: B


Which onstat command will allow the gathering of statistics about the Informix Database
Scheduler tasks that are currently running or scheduled to be run?

A. onstat -g dbc
B. onstat -g sch
C. onstat -g adm
D. onstat -g tsk

Answer: A


What does the ovbuff field of an onstat -p output show?

A. The number of times that a buffer was read.
B. The number of times a buffer was extended.
C. The number of times that any buffer was overwritten.
D. The number of times the instance ran out of free buffers.

Answer: D


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