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.
QUESTION 1
Which sysmaster table can be queried to find the logging status of a database?
A. sysdb
B. sysdblog
C. sysdatabases
D. sysdblogstatus
Answer: C
Explanation:
QUESTION 2
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
Explanation:
QUESTION 3
Which command line utility displays real time statistics about the instance?
A. dbinfo
B. onstat
C. dbschema
D. onmachinfo
Answer: B
Explanation:
QUESTION 4
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
Explanation:
QUESTION 5
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
Explanation:
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