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- 11:18 (Patrick)
No Format sar -q Linux 2.6.9-55.0.6.ELsmp (caje) 10/05/2007 12:00:01 AM runq-sz plist-sz ldavg-1 ldavg-5 ldavg-15 12:10:01 AM 1 1211 0.72 0.91 0.98 02:10:01 AM 0 1211 0.12 0.18 0.47 02:20:02 AM 0 1215 1.32 1.28 0.89 02:30:01 AM 0 1209 0.09 0.36 0.61 02:40:01 AM 0 1211 0.05 0.14 0.37 02:50:01 AM 0 1215 0.95 0.49 0.38 03:00:09 AM 1 1212 0.05 0.39 0.45 03:10:01 AM 0 1211 0.23 0.20 0.31 03:20:01 AM 0 1214 0.21 0.20 0.24 03:30:01 AM 1 1208 1.15 0.91 0.57 03:40:01 AM 0 1210 0.06 0.45 0.54 03:50:02 AM 0 1217 0.52 0.28 0.37 04:00:01 AM 1 1214 1.21 1.36 0.93 04:10:02 AM 0 1225 1.55 1.86 1.45 04:20:02 AM 0 1226 1.24 1.54 1.42 04:30:02 AM 0 1220 1.36 1.19 1.26 04:40:02 AM 0 1220 1.14 1.45 1.41 04:50:07 AM 0 1224 1.34 1.28 1.28 05:00:06 AM 1 1220 1.32 1.36 1.34 06:00:01 AM 0 1215 0.65 0.33 0.51 06:40:02 AM 0 1212 1.16 0.75 0.66 07:20:01 AM 0 1222 1.57 2.18 1.83 07:40:01 AM 1 1213 0.63 1.14 1.64 08:00:01 AM 5 1216 4.51 3.28 2.21 08:40:04 AM 13 1227 17.44 17.31 12.78 08:50:13 AM 14 1254 20.77 19.95 16.40 09:10:19 AM 9 1235 21.66 23.12 20.19 09:30:01 AM 0 1237 1.48 3.77 10.36 09:40:01 AM 0 1236 0.57 1.29 5.91 10:00:06 AM 2 1235 1.67 1.40 2.42 Average: 2 1220 2.89 3.01 3.01 It's really frustrating that, even at 7:40am, the system is breezing along. Prabhu and I will work to schedule a rebuild of the tables at 7:00 am each morning. That job runs about 20 minutes. We will then switch the synonyms by 7:30am. We are also opening a service request with Oracle.
- 11:17 (Drew)
No Format If execution plan stability is an issue for you after modifying the Oracle default window, you can consider the Plan Stability specified in this Oracle document: http://download.oracle.com/docs/cd/B19306_01/server.102/b14211/outlines.htm#sthref1787
- 09:07 (Patrick)
No Format This query is active for a number of sessions (around 10) today: select sectioncmi0_.EID as EID248_, sectioncmi0_.CATEGORY as CATEGORY248_, sectioncmi0_.TITLE as TITLE248_, sectioncmi0_.DESCRIPTION as DESCRIPT4_248_, sectioncmi0_.CREATEDBY as CREATEDBY248_, sectioncmi0_.CREATEDDATE as CREATEDD6_248_, sectioncmi0_.LASTMODIFIEDBY as LASTMODI7_248_, sectioncmi0_.LASTMODIFIEDDATE as LASTMODI8_248_, sectioncmi0_.COURSEOFFERING_EID as COURSEOF9_248_,sectioncmi0_.ENROLLMENTSET_EID as ENROLLM10_248_, sectioncmi0_.PARENT as PARENT248_, sectioncmi0_.MAXSIZE as MAXSIZE248_ from COURSEMANAGEMENT_SECTION sectioncmi0_, COURSEMANAGEMENT_INSTRUCTORS instructor1_ where instructor1_.SECTION_EID=sectioncmi0_.EID and instructor1_.PERSON_EID=:1 Here is the explain plan: SELECT STATEMENT () TABLE ACCESS (BY INDEX ROWID) COURSEMANAGEMENT_INSTRUCT_TA NESTED LOOPS () TABLE ACCESS (FULL) COURSEMANAGEMENT_SECTION_TA INDEX (RANGE SCAN) CM_INST_TA_PERSON_IDX
- 08:47 (Patrick)
Building a set of new tables after DB performance degraded
Thursday 10-04-2007
- 15:20 (Patrick) Run coursemanagement_merge_procs.sql
- coursemanagement_merge_procs.sql
- Script run fine for:
- coursemanagement_section
- coursemanagement_offering
- coursemanagement_enrollment
- Script hung during the delete records process for:
- coursemanagement_instructors
- coursemanagement_membership
- 11:35 (Patrick) Recreated the 5 CM tables after DB load increased over 20
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