000-918 Practice Test

000-918 Exam
System Administration for IBM Informix Dynamic Server V11
Exam

Number/Code : 000-918
Exam Name : System Administration for IBM Informix Dynamic Server V11
Questions and Answers : 282 Q&As
Update Time: 2010-10-09

000-918Test information:
Number of questions: 74
Time allowed in minutes: 120
Required passing score: 70%
Section Troubleshooting
Isolate problems using systmaster, systadmin, onstat utilities
Use concurrency and locking
Section Performance Tuning
Recognize Operating System resources affecting system operations
Configure shared memory parameters
Determine optimal disk layout and configuration
Utilize Parallel Database Query (PDQ) to optimze query performance
Use UPDATE STATISTICS to achive optimal performance
Configure system for optimal checkpoint duration
Monitor the number of Virtual Porcessors needed for the resources available
Manage network parameters for optimal communcation performance

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000-918 braindump
1. You detected excessive memory usage that might be caused by a memory leak in the application. Which two commands would be useful in this scenario? (Choose two.)
A. onstat -u
B. onstat -g sql -r 120
C. onstat -g ses -r 60
D. onstat -g mgm
E. onstat -g mem
Answer: CE
2. Click the Exhibit button.
exhibit Missing
In the exhibit, how does an IDS database administrator or programmer ensure that only committed data will be seen and that no locking errors will occur?
A. Change user 1 isolation level to dirty read.
B. Change user 2 isolation level to dirty read.
C. Change user 1 isolation level to committed read last committed.
D. Change user 2 isolation level to committed read last committed.
Answer: D
3. Click the Exhibit button.
Given the sqexplain output in the exhibit, which SQL statement will make the est_rows column accurate?
exhibit Missing
A. update statistics high for table
B. update statistics high for systables
C. update statistics high for table orders
D. update statistics high for table customer
Answer: A

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