subject: 000-918 Practice Test [print this page] 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
