MAINVIEW for DB2.ppt
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This document provides an overview and instructions for using BMC MainView software to monitor DB2 system and application performance. It outlines the MainView easy menu interface and describes how to view various DB2 performance metrics such as storage usage, logging, locking, threads, SQL activity and more. Drill-downs and filtering options are demonstrated to get more detailed information on specific topics like buffer pools, page sets, exceptions and traced threads.
MAINVIEW for DB2.ppt
- 1. 12/10/2022 BMC MAINVIEW for DB2 Sam Antoun Principal Software Consultant (949) 249-0238 Sam_Antoun@bmc.com
- 2. 12/10/2022 ©2006 BMC Software 2 Agenda •DB2 System Performance •DB2 Application Performance
- 3. 12/10/2022 ©2006 BMC Software 3 DB2 System Performance •Storage •Logging •Locking •Connections •Page Sets •Threads •Parallelism
- 4. 12/10/2022 ©2006 BMC Software 4 DB2 System Performance •Storage •EDM Pool •RID Pool •SORT Pool •Buffer Pools •Group Buffer Pools •Dynamic SQL Cache
- 5. 12/10/2022 ©2006 BMC Software 5 DB2 System Performance •Logging •Active and Archive Logs •Throughput •Contention •Buffers
- 6. MainView for DB2 – DB2 SSI Easy Menu 12/10/2022 ©2006 BMC Software 6 First, let’s look at the status of all our SSID’s Enter
- 7. DB2 Status 12/10/2022 ©2006 BMC Software 7 List of the SSID’s being monitored Number of active threads for each SSID Any Exceptions Number of open datasets PF11
- 8. DB2 Status 12/10/2022 ©2006 BMC Software 8 Hyperlink to thread connections System Paging PF11
- 9. DB2 Status 12/10/2022 ©2006 BMC Software 9 Number of DML calls per second Virtual Pool hit ratio for current interval (BP size) Virtual Pool hit ratio w/prefetch for current interval (BP Thresholds) EDM Hit Ratio (EDM size) PF11
- 10. DB2 Status 12/10/2022 ©2006 BMC Software 10 Number of dependent TS in the GBP PF10
- 11. DB2 Status – Drill down to one SSID 12/10/2022 ©2006 BMC Software 11 Let’s select a subsystem Enter
- 12. DB2 Status – Drill down to one SSID 12/10/2022 ©2006 BMC Software 12 Hyperlink to desired connections PF8
- 13. DB2 Status – Detailed SSID Information 12/10/2022 ©2006 BMC Software 13 Suspends, Deadlocks and Timeouts (look at program commits) Getpage rate per second (Program and Reorg) System and DB2 Paging (Look at BP and Storage) Failure of read/writes in Coupling Facility Degree of Parallelism (BP Thresholds) Available/In Use Storage PF3
- 14. DB2 Status – Drill down to Active Threads 12/10/2022 ©2006 BMC Software 14 Hyperlink to active threads Enter
- 15. DB2 Status – Drill down to Warnings 12/10/2022 ©2006 BMC Software 15 Hyperlink on warnings Enter
- 16. DB2 Status – List of warnings 12/10/2022 ©2006 BMC Software 16 List of warnings PF3
- 17. DB2 Status – Drill down to Locks 12/10/2022 ©2006 BMC Software 17 Hyperlink on Locks Enter
- 18. DB2 Status – List of Locks held by Thread 12/10/2022 ©2006 BMC Software 18 List of Locks held PF3
- 19. DB2 Status – Drill down to Getpage info 12/10/2022 ©2006 BMC Software 19 Hyperlink on Getpage Rate Enter
- 20. DB2 Status – Drill down to Buffer Pool 12/10/2022 ©2006 BMC Software 20 Hyperlink on Buffer Pool Enter
- 21. DB2 Status – BP Detail and Threasholds 12/10/2022 ©2006 BMC Software 21 Buffer Pool size and thresholds PF8
- 22. DB2 Status – VP Read/Write Stats 12/10/2022 ©2006 BMC Software 22 Read/Write Statistics Sync Read when DB2 was attempting to do sequential PF8
- 23. DB2 Status – Prefetch Details 12/10/2022 ©2006 BMC Software 23 List Prefetch Stats Sequential Prefetch Stats PF8
- 24. DB2 Status – BP Thresholds Reached 12/10/2022 ©2006 BMC Software 24 Timeout due to Migrated DSN Thresholds Reached (Look at BP Thresholds) PF3
- 25. DB2 Status – Drill down to More DB2 Status 12/10/2022 ©2006 BMC Software 25 Hyperlink on Dashboard Enter
- 26. DB2 Status – Dashboard 12/10/2022 ©2006 BMC Software 26 The first "top 10" values in the view are highlighted in reverse video. Green indicates acceptable values. Red indicates values that should be analyzed for potential problems. Inactive DB2 subsystems have the status of INACTIVE shown in red, with all other indicators blanked out. PF11
- 27. DB2 Status – Dashboard 12/10/2022 ©2006 BMC Software 27 To the right of the top 10 indicators are many other key indicators of system health such as hit ratios and failure counts. Each column has a drilldown hyperlink to further detailed information about that specific DB2 function. Dynamic SQL Cache hit ratio PF11
- 28. DB2 Status – Dashboard 12/10/2022 ©2006 BMC Software 28 Look at any possible failures PF3
- 29. DB2 Status – Hyperlink to Activity Rates 12/10/2022 ©2006 BMC Software 29 Hyperlink on Activity Rate Enter
- 30. DB2 Status – Activity Rates 12/10/2022 ©2006 BMC Software 30 Activity Rate is more accurate than activity count. This view provides the rates during current interval. A value of .1 would equal 6 occurrences per minute. PF3
- 31. DB2 Status – Exceptions 12/10/2022 ©2006 BMC Software 31 Hyperlink on Exceptions Enter
- 32. DB2 Status – Exceptions 12/10/2022 ©2006 BMC Software 32 Quick look at any warning and exceptions with hyperlinks to more details PF3
- 33. DB2 Status – EDM Pool 12/10/2022 ©2006 BMC Software 33 Hyperlink to EDM Pool Enter
- 34. DB2 Status – EDM Pool Details 12/10/2022 ©2006 BMC Software 34 Breakdown of how EDM Pool is utilized EDM Pool Failures Reached (Look at EDM size) PF11
- 35. DB2 Status – EDM Pool Details 12/10/2022 ©2006 BMC Software 35 EDM Free Pages(in a typical system look for 15% free) Loads indicate a request for DBD, CT… but wasn’t found in Pool PF11
- 36. DB2 Status – EDM Pool Details 12/10/2022 ©2006 BMC Software 36 Number of cache full failures in EDM pool for the current recording interval PF3
- 37. DB2 Status – RID Pool 12/10/2022 ©2006 BMC Software 37 Hyperlink to RID Pool Enter
- 38. DB2 Status – RID Pool Details 12/10/2022 ©2006 BMC Software 38 Hi Block Allocated is the most # of blocks used at any one time during interval. If close or the same as Max Block Allowed, in increase MAXRBLK parameter in ZPARM Limit reached. If too many increase MAXRBLK parameter in ZPARM Limit reached. Examine offending SQL and attempt to change access path Storage constraints. Increase MAXRBLK parameter in ZPARM PF3
- 39. DB2 Status – Logging 12/10/2022 ©2006 BMC Software 39 Hyperlink to Logging information Enter
- 40. DB2 Status – Logging Details 12/10/2022 ©2006 BMC Software 40 Large number of Force Writes may indicate too many commits in a program. Also, you may need to look at the DASD volume to confirm that it’s only active 35-40% of the time. This should almost always be zero. If > 0, increase the OUTBUF parameter in zparm PF11
- 41. DB2 Status – Logging Details 12/10/2022 ©2006 BMC Software 41 More than one backout or recovery has executed and caused contention in archive logs Possible tape contention or no TCB’s available for backout or recover PF11
- 42. DB2 Status – Logging Details 12/10/2022 ©2006 BMC Software 42 Should be growing steadily Number of checkpoints during interval. If growing too fast increase LONGLOG parm in zparm PF3
- 43. DB2 Status – Page Set Status 12/10/2022 ©2006 BMC Software 43 Hyperlink to Page Set Information Enter
- 44. 12/10/2022 ©2006 BMC Software 44 Max amount of wait time for I/O Average amount of wait time for I/O. Possible volume contention DB2 Status – Page Set Status PF11
- 45. 12/10/2022 ©2006 BMC Software 45 DB2 Status – Page Set Status – Synchronous Detail PF11
- 46. DB2 Status – Page Set Status – Asynchronous Detail 12/10/2022 ©2006 BMC Software 46 PF11
- 47. DB2 Status – Page Set Status – Virtual Pool Detail 12/10/2022 ©2006 BMC Software 47 PF11
- 48. DB2 Status – Page Set Status 12/10/2022 ©2006 BMC Software 48
- 49. 12/10/2022 ©2006 BMC Software 49 DB2 Application Performance •SQL •Threads •Plans/Packages •Users •Tablespaces/Indexspaces •Parallelism •Locks
- 50. 12/10/2022 ©2006 BMC Software 50 SQL •Access Path •Statistics •Explain •CPU/ELAPSED Times •Getpages •Commits
- 51. 12/10/2022 ©2006 BMC Software 51 TS/IDX •I/O •Placement •Response Time •Buffer Pool Hit Ratio •Update Frequency
- 52. MainView for DB2 – Application Monitoring 12/10/2022 ©2006 BMC Software 52 Easy Menu Enter
- 53. MainView for DB2 – Application Monitoring 12/10/2022 ©2006 BMC Software 53 Active Thread Menu Enter
- 54. Thread Summary 12/10/2022 ©2006 BMC Software 54 Enter
- 55. Thread Summary 12/10/2022 ©2006 BMC Software 55 PF3
- 56. Thread Summary 12/10/2022 ©2006 BMC Software 56 Enter
- 57. Thread Summary 12/10/2022 ©2006 BMC Software 57 PF3
- 58. Thread Summary 12/10/2022 ©2006 BMC Software 58 Enter
- 59. Thread Summary 12/10/2022 ©2006 BMC Software 59 PF3
- 60. Thread Summary 12/10/2022 ©2006 BMC Software 60 Enter
- 61. Thread Summary 12/10/2022 ©2006 BMC Software 61 PF3 CPU Time Elapsed time # of Statements # of Getpages
- 62. Thread Summary 12/10/2022 ©2006 BMC Software 62 Enter
- 63. Thread Summary 12/10/2022 ©2006 BMC Software 63 PF3 Warnings
- 64. Trace History 12/10/2022 ©2006 BMC Software 64 Enter
- 65. Trace History 12/10/2022 ©2006 BMC Software 65 Enter Default Trace Captures threads > 10 seconds elapsed
- 66. Trace History 12/10/2022 ©2006 BMC Software 66 Enter
- 67. Trace History 12/10/2022 ©2006 BMC Software 67 PF3
- 68. Trace History 12/10/2022 ©2006 BMC Software 68 Enter
- 69. Trace History - Filter 12/10/2022 ©2006 BMC Software 69
- 70. Trace History - Filter 12/10/2022 ©2006 BMC Software 70
- 71. Trace History - Filtered 12/10/2022 ©2006 BMC Software 71 PF11 CPU Time Elapsed Time
- 72. Trace History 12/10/2022 ©2006 BMC Software 72 PF11 Time spent in DB2
- 73. Trace History 12/10/2022 ©2006 BMC Software 73 PF11 High Class 3 Elapsed time could be sign of: Synchronous I/O suspension time Lock/latch suspension time Asynchronous read suspensions Asynchronous write suspensions Service task suspensions Archive log mode time Lock Suspensions
- 74. Trace History 12/10/2022 ©2006 BMC Software 74 PF11 Exceptions
- 75. Thread Summary - History 12/10/2022 ©2006 BMC Software 75 PF10 Possible Utility contention Bind Failure Rid Pool Failure
- 76. Thread Summary - Filter 12/10/2022 ©2006 BMC Software 76 Enter
- 77. Thread Summary - Filter 12/10/2022 ©2006 BMC Software 77 Enter
- 78. Trace History - Filter 12/10/2022 ©2006 BMC Software 78 PF3
- 79. Trace History - Thread 12/10/2022 ©2006 BMC Software 79 Default Trace Accounting Thread History Enter
- 80. Trace History - Thread 12/10/2022 ©2006 BMC Software 80 PF11
- 81. Trace History - Thread 12/10/2022 ©2006 BMC Software 81 PF11
- 82. Trace History - Thread 12/10/2022 ©2006 BMC Software 82 PF11
- 83. Trace History - Thread 12/10/2022 ©2006 BMC Software 83 PF10
- 84. Trace History – Trace Thread List 12/10/2022 ©2006 BMC Software 84 Enter
- 85. Trace History – Summary Trace Entry 12/10/2022 ©2006 BMC Software 85 Enter
- 86. Trace History – Summary Trace Entry 12/10/2022 ©2006 BMC Software 86 PF8 Acceptable Wait Time
- 87. Trace History – Summary Trace Entry 12/10/2022 ©2006 BMC Software 87 PF8 Majority of time spent in DB2
- 88. Trace History – Summary Trace Entry 12/10/2022 ©2006 BMC Software 88 PF8 Basic Accounting Information
- 89. Trace History – Summary Trace Entry 12/10/2022 ©2006 BMC Software 89 PF8 Buffer Pool Activity
- 90. Trace History – Summary Trace Entry 12/10/2022 ©2006 BMC Software 90 PF8 Lock information
- 91. Trace History – Summary Trace Entry 12/10/2022 ©2006 BMC Software 91 PF8 Group Buffer Pool
- 92. Trace History – Summary Trace Entry 12/10/2022 ©2006 BMC Software 92 PF3 DBRM/Package Summary
- 93. Trace History – Data Collector Data 12/10/2022 ©2006 BMC Software 93 Data Collector Detailed Accounting Data Enter
- 94. Trace History – Data Collector Data 12/10/2022 ©2006 BMC Software 94 Sort Data on CPU time Enter
- 95. Trace History – Data Collector Data 12/10/2022 ©2006 BMC Software 95 Total CPU usage for 15 period Narrow Time Enter
- 96. Trace History – Data Collector Data 12/10/2022 ©2006 BMC Software 96 5 Minute Increments Narrow Time to 1 Minute Increments Enter
- 97. Trace History – Data Collector Data 12/10/2022 ©2006 BMC Software 97 Hyperlink to Record Details Enter
- 98. Trace History – Data Collector Data 12/10/2022 ©2006 BMC Software 98 Enter
- 99. Trace History – Data Collector Data 12/10/2022 ©2006 BMC Software 99 PF11
- 100. Trace History – Data Collector Data 12/10/2022 ©2006 BMC Software 100 PF11
- 101. Trace History – Data Collector Data 12/10/2022 ©2006 BMC Software 101 PF11
- 102. Trace History – Data Collector Data 12/10/2022 ©2006 BMC Software 102 Commit for every update
- 103. DB2 Application Performance 12/10/2022 ©2006 BMC Software 103 Explain
- 104. Explain Capability 12/10/2022 ©2006 BMC Software 104 Current Threads Enter
- 105. Explain Capability 12/10/2022 ©2006 BMC Software 105 Select a thread or user Enter
- 106. Explain Capability 12/10/2022 ©2006 BMC Software 106 PF8
- 107. Explain Capability 12/10/2022 ©2006 BMC Software 107 Explain SQL Enter
- 108. Explain Capability 12/10/2022 ©2006 BMC Software 108 Explain SQL Enter
- 109. Explain Capability 12/10/2022 ©2006 BMC Software 109 Get Rule information Enter
- 110. Explain Capability 12/10/2022 ©2006 BMC Software 110 SQL related messages Warnings Informational PF8 Severe
- 111. Explain Capability 12/10/2022 ©2006 BMC Software 111 Object informational messages
- 112. Explain Capability 12/10/2022 ©2006 BMC Software 112 Toggle back Enter
- 113. Explain Capability 12/10/2022 ©2006 BMC Software 113 Show details Enter
- 114. Explain Capability 12/10/2022 ©2006 BMC Software 114 Full SQL Statement Object information & Statistics
- 115. Explain Capability 12/10/2022 ©2006 BMC Software 115 Predicates Enter
- 116. Explain Capability 12/10/2022 ©2006 BMC Software 116
- 117. Explain Capability – What If? 12/10/2022 ©2006 BMC Software 117 What If? Enter
- 118. Explain Capability – What If? 12/10/2022 ©2006 BMC Software 118 Enter
- 119. Explain Capability – What If? 12/10/2022 ©2006 BMC Software 119 PF3
- 120. Explain Capability – What If? 12/10/2022 ©2006 BMC Software 120 Notice Cost Rate
- 121. Explain Capability – What If? 12/10/2022 ©2006 BMC Software 121 Clone Enter
- 122. Explain Capability – What If? 12/10/2022 ©2006 BMC Software 122 What If? Enter
- 123. Explain Capability – What If? 12/10/2022 ©2006 BMC Software 123 Enter IDX Name Enter
- 124. Explain Capability – What If? 12/10/2022 ©2006 BMC Software 124 Show Full Statement Enter
- 125. Explain Capability – What If? 12/10/2022 ©2006 BMC Software 125 Select Columns to Index Enter
- 126. Explain Capability – What If? 12/10/2022 ©2006 BMC Software 126 PF3
- 127. Explain Capability – What If? 12/10/2022 ©2006 BMC Software 127 Dynamic Explain
- 128. Explain Capability – What If? 12/10/2022 ©2006 BMC Software 128 Notice the lower cost Access Path Changes
- 129. DB2 Application Performance 12/10/2022 ©2006 BMC Software 129 Trace
- 130. Traces – Start Trace 12/10/2022 ©2006 BMC Software 130 Enter
- 131. Traces – Start Trace 12/10/2022 ©2006 BMC Software 131 Enter Start Trace
- 132. Traces – Start Trace 12/10/2022 ©2006 BMC Software 132 Enter Start and End times
- 133. Traces – Start Trace 12/10/2022 ©2006 BMC Software 133 PF3
- 134. Traces – Start Trace 12/10/2022 ©2006 BMC Software 134 Enter Show Trace Parameters
- 135. Traces – Start Trace 12/10/2022 ©2006 BMC Software 135 Enter
- 136. Traces – Start Trace 12/10/2022 ©2006 BMC Software 136 PF3
- 137. Traces – Start Trace 12/10/2022 ©2006 BMC Software 137 Enter
- 138. Traces – Start Trace 12/10/2022 ©2006 BMC Software 138 Enter
- 139. Traces – Start Trace 12/10/2022 ©2006 BMC Software 139 PF8 Accounting information for thread
- 140. Traces – Start Trace 12/10/2022 ©2006 BMC Software 140 PF8
- 141. Traces – Start Trace 12/10/2022 ©2006 BMC Software 141 Summary/Totals PF8
- 142. Traces – Start Trace 12/10/2022 ©2006 BMC Software 142 SQL summary PF8
- 143. Traces – Start Trace 12/10/2022 ©2006 BMC Software 143 Buffer Pool Summary PF8
- 144. Traces – Start Trace 12/10/2022 ©2006 BMC Software 144 Get more detailed information Enter
- 145. Traces – Start Trace 12/10/2022 ©2006 BMC Software 145 Get SQL Text Sequence of events Enter
- 146. EXPLAIN 12/10/2022 ©2006 BMC Software 146 Cut SQL Statement
- 147. EXPLAIN 12/10/2022 ©2006 BMC Software 147 Enter
- 148. EXPLAIN 12/10/2022 ©2006 BMC Software 148 Enter
- 149. EXPLAIN 12/10/2022 ©2006 BMC Software 149 Enter
- 150. EXPLAIN 12/10/2022 ©2006 BMC Software 150 Paste PF3
- 151. EXPLAIN 12/10/2022 ©2006 BMC Software 151 Enter
- 152. EXPLAIN 12/10/2022 ©2006 BMC Software 152
- 153. MainView for DB2 12/10/2022 ©2006 BMC Software 153 Q&A