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Exam C2090-600 topic 1 question 33 discussion

Actual exam question from IBM's C2090-600
Question #: 33
Topic #: 1
[All C2090-600 Questions]

When querying the MON_GET_TABLESPACE table function, the values for many of the performance metrics like POOL_DATA_P_READS and
POOL_DATA_L_READS are showing 0, even though there is activity occurring in the database. Which command must be executed to enable the table function to return actual data?

  • A. UPDATE DB CFG USING MON_OBJ_METRICS BASE
  • B. UPDATE DB CFG USING MON_ACT_METRICS BASE
  • C. UPDATE DBM CFG USING DFT_MON_BUFPOOL ON
  • D. UPDATE MONITOR SWITCHES USING BUFFERPOOL ON
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Suggested Answer: C 🗳️
by caliiorb at Oct. 17, 2019, 9:47 p.m.

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db2tester
5 years, 5 months ago
The command "Update Monitor Switches" and the parameter DFT_MON_BUFPOOL are the older methodology which is referred as "snapshot monitoring", you used to have no choice but the "GET SNAPSHOT" command". The tables MON_GET_XXX are not updated by these older methodology. MON_ACT_METRICS and MON_OBJ_METRICS are the new methodology to monitor your system and update the tables "MON_GET_XXX". See reference : https://datageek.blog/2013/07/16/two-worlds-of-db2-luw-performance-monitoring/
upvoted 1 times
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db2tester
5 years, 5 months ago
The answer A is correct because MON_OBJ_METRICS collect all metrics that are reported through the following table functions : - MON_GET_BUFFERPOOL - MON_GET_CONTAINER - MON_GET_TABLESPACE
upvoted 2 times
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db2tester
5 years, 5 months ago
MON_ACT_METRICS see reference : https://www.ibm.com/support/knowledgecenter/SSEPGG_11.1.0/com.ibm.db2.luw.admin.config.doc/doc/r0054936.html
upvoted 1 times
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db2tester
5 years, 5 months ago
The answer B is not correct because MON_ACT_METRICS is for the following monitor interfaces report activity metrics: - MON_GET_PKG_CACHE_STMT_DETAILS - MON_GET_ACTIVITY - MON_GET_ACTIVITY_DETAILS - MON_GET_PKG_CACHE_STMT - WLM_GET_WORKLOAD_OCCURRENCE_ACTIVITIES - Package cache event monitor - Activity event monitor
upvoted 1 times
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caliiorb
5 years, 6 months ago
Correct answer is A https://www.ibm.com/support/knowledgecenter/en/SSEPGG_11.1.0/com.ibm.db2.luw.sql.rtn.doc/doc/r0053943.html
upvoted 4 times
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