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Anton Topurov IT Department – DB Group

Database Performance Tuning with EM12c. Anton Topurov IT Department – DB Group. Agenda. Database Performance Tuning Enterprise Manager 11 Enterprise Manager 12 Conclusions. Database DB Time.

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Anton Topurov IT Department – DB Group

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  1. Database Performance Tuning with EM12c Anton Topurov IT Department – DB Group

  2. Agenda • Database Performance Tuning • Enterprise Manager 11 • Enterprise Manager 12 • Conclusions

  3. Database DB Time Database Time is total time spent by user processes either actively working or actively waiting in a database call. Source: Oracle

  4. Active Sessions Source: Oracle

  5. Average Active Sessions Source: Oracle

  6. Performance Tuning in EM 11 6

  7. Performance Page 7

  8. Drill down to root cause 8

  9. Performance Tuning in EM 12 9

  10. New features EM12c • ASH Analytics • Active Session History Based • Fine Grained filtering • Active Reports • Interactive reports without connection to EM • Save or send • Emergency Monitoring • When database is hanged • Get data directly from the host 10

  11. Case Study # 1: Slow response time due to high I/O ASH Analytics Wait Class Add Filter Wait Event • Sliced the data on RMAN I/O • Drilling down to corresponding wait event and histograms • Slow network speed due to MTU 1500 on OVM Histogram

  12. 12

  13. 13

  14. Emergency Monitoring • Uses host credentials • Gets info directly from the host 14

  15. Conclusions • More performance features • Visualization on focus • Greater level of flexibility • More filtering dimensions • Flexible duration timelines • Emergency tools • Can be used when nothing else helps • All user friendly 15

  16. Questions? 16

  17. Thankyou! 17

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