| Summary: | consider adding index to RHQ_MEASUREMENT_SCHED.RESOURCE_ID column as recommended by Oracle EM to improve performance of call-time data purge delete queries | ||||||
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| Product: | [Other] RHQ Project | Reporter: | Ian Springer <ian.springer> | ||||
| Component: | Core Server | Assignee: | Robert Buck <rbuck> | ||||
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Mike Foley <mfoley> | ||||
| Severity: | high | Docs Contact: | |||||
| Priority: | high | ||||||
| Version: | 4.0.1 | CC: | ccrouch, hrupp | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | Unspecified | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2012-02-07 19:29:33 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Bug Depends On: | |||||||
| Bug Blocks: | 678340, 717358, 725459 | ||||||
| Attachments: |
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Diffs Here: http://git.fedorahosted.org/git/?p=rhq/rhq.git;a=commitdiff_plain;h=5697849505fb1a792f3a45935b82aeb6ea3f0234 Branch: feature/performance Commit: commit 5697849505fb1a792f3a45935b82aeb6ea3f0234 Author: Robert Buck <buck.robert.j> Date: 2011-07-28 18:06:59 -0400 [BZ 722600] Add index to RHQ_MEASUREMENT_SCHED.RESOURCE_ID column as recommended by Oracle EM to improve performance. Committed this to master in: d7e9e35c5326c1c36f1d323fc5448d703f225bca d678847b36a71932f8c7d7cd1c7fd4296378b44f attaching image documenting that this index does indeed exist in RHQ 4.1 Beta. Created attachment 517679 [details]
new Oracle index does indeed exist -- verification
verified as follows: 1) index exists in oracle 2) basic functional use-case works (monitoring of traits, metrics, call times 3) no SQL or hibernate errors in RHQ log file 4) out-of-scope: did not verify the performance improvement of the addition of this index. changing status of VERIFIED BZs for JON 2.4.2 and JON 3.0 to CLOSED/CURRENTRELEASE marking VERIFIED BZs to CLOSED/CURRENTRELEASE |
This was recommended by Oracle EM in our perf environment: SQL Text -------- delete from RHQ_CALLTIME_DATA_KEY where SCHEDULE_ID in (select id from RHQ_MEASUREMENT_SCHED measuremen1_ where measuremen1_.RESOURCE_ID in (:1 )) Select Recommendation --------------------- New Explain Plan ---------------- Index The execution plan of this statement can be improved by creating one or more indices. Consider running the Access Advisor to improve the physical schema design or creating the recommended index. JON.RHQ_MEASUREMENT_SCHED("RESOURCE_ID") Creating the recommended indices significantly improves the execution plan of this statement. However, it might be preferable to run "Access Advisor" using a representative SQL workload as opposed to a single statement. This will allow to get comprehensive index recommendations which takes into account index maintenance overhead and additional space consumption. We should try adding this index and see if EM stops reporting the call-time purge queries as problematic.