What PeopleSoft Product and what PeopleTools version? Are you running Unicode? regards _________________________ David Kurtz Go-Faster Consultancy Ltd. tel: +44 (0)7771 760660 fax: +44 (0)7092 348865 mailto:david.kurtz@xxxxxxxxxxxxxxx web: www.go-faster.co.uk Book: PeopleSoft for the Oracle DBA: http://www.psftdba.com <http://www.psftdba.com/> DBA Blogs: PeopleSoft: http://blog.psftdba.com <http://blog.psftdba.com/> , Oracle: http://blog.go-faster.co.uk <http://blog.go-faster.co.uk/> PeopleSoft DBA Forum: http://groups.yahoo.com/group/psftdba _____ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Zanen van, J (Jacob) Sent: Tuesday, October 30, 2007 11:01 PM To: oracle-l@xxxxxxxxxxxxx Subject: Performance Problem. Need some help on this. We have a peoplesoft environment here that seems to have performance issues every so often. When this happens performance comes to s standstill for everyone and a SQL*Plus query that takes about 6-7 seconds normally takes about 13 minutes. During this time it will pretty much wait for sequential reads only. I have not yet had the chance to install statspack yet and we are not licensed for AWR. We are on oracle 10.2.0.3 on solaris 64bit When I check the database quickly (needs to be done quickly as business dictates a reboot at the moment) I do not see any obvious reasons why this would be happening. On unix the admins see quite a large increase in use of semaphores. After the reboot the problems seem to disappear for several weeks/months Has anyone seen something similar before and found out why this is happening. Brgds Jack 00:00:00 msg/s sema/s 00:05:00 15.19 17.37 00:05:00 16.03 19.85 00:10:00 15.30 16.88 00:15:00 15.20 16.74 00:20:00 15.28 16.33 00:25:00 15.18 16.69 00:30:00 15.29 16.64 00:35:00 15.20 16.77 00:40:00 15.29 16.50 00:45:00 15.20 16.38 00:50:00 15.29 16.85 00:55:00 15.20 16.10 01:00:00 15.29 16.38 01:05:00 15.98 18.36 01:10:00 15.27 17.00 01:15:00 15.20 16.11 01:20:00 15.30 16.87 01:25:00 15.21 16.78 01:30:00 15.28 16.39 01:35:00 15.21 16.62 01:40:00 15.24 16.37 01:45:00 15.25 16.69 01:50:00 15.22 16.46 01:55:00 15.25 16.48 02:00:00 15.26 16.77 02:05:00 15.24 24.18 02:10:00 15.23 17.22 02:15:00 15.25 16.10 02:20:01 15.21 16.84 02:25:00 18.13 38.54 02:30:00 15.41 5314.39 02:35:00 14.98 8429.98 02:40:00 15.65 3357.07 02:45:00 15.31 2490.93 02:50:00 15.65 3482.85 02:55:00 15.73 148.26 03:00:00 15.08 171.86 03:05:00 15.21 183.91 03:10:00 14.92 294.01 03:15:00 15.00 468.95 03:20:00 14.93 520.64 03:25:00 15.01 412.20 03:30:00 14.92 447.94 03:35:00 15.00 424.45 03:40:00 14.94 431.55 03:45:00 15.01 456.17 03:50:01 14.93 411.22 03:55:00 15.00 391.96 04:00:00 14.92 394.48 04:05:00 15.00 498.71 04:10:00 14.94 570.89 04:15:00 15.00 522.34 04:20:00 15.74 400.65 04:25:00 15.34 428.68 04:30:00 14.96 430.52 04:35:00 14.97 472.91 04:40:00 16.23 254.53 04:45:00 15.47 198.73 04:50:00 15.53 198.35 04:55:00 15.99 190.24 05:00:00 16.42 209.91 05:05:00 16.22 174.31 05:10:00 15.94 140.37 05:15:00 15.52 106.79 05:20:00 15.51 329.76 05:25:00 15.90 303.13 05:30:00 15.40 534.14 05:35:00 16.42 577.82 05:40:00 17.19 584.08 05:45:00 15.01 48.89 05:50:00 15.71 69.60 05:55:00 14.93 68.07 06:00:00 15.15 68.18 06:05:00 14.94 70.65 06:05:00 14.17 20.47 06:10:00 15.01 16.73 06:15:00 14.92 16.64 06:20:00 15.00 18.19 06:25:00 15.07 17.92 06:30:00 15.02 47.48 06:35:00 14.92 77.07 06:40:01 15.75 86.36 06:45:00 15.81 42.92 06:50:00 15.44 61.03 06:55:00 16.15 35.05 07:00:00 16.73 98.17 07:05:00 15.13 36.37 07:10:00 15.27 34.78 07:15:00 15.10 221.79 07:20:00 14.99 134.22 07:25:00 15.18 5043.76 07:30:00 15.41 61.87 07:35:01 16.78 68.32 07:40:00 15.76 77.19 07:45:00 15.25 35.46 07:50:00 15.21 27.88 07:55:01 15.26 21.13 08:00:00 15.27 16.33 08:05:00 15.24 16.91 08:10:01 15.99 17.44 08:15:00 15.55 16.72 08:20:00 15.51 16.90 08:25:00 15.53 17.25 08:30:00 15.46 16.53 08:35:00 15.99 17.27 08:40:00 15.35 17.08 08:45:00 17.14 17.50 08:50:01 15.98 19.26 08:55:00 15.50 22.11 09:00:00 16.13 23.00 09:05:00 17.20 26.45 09:10:00 15.00 162.57 09:15:00 16.40 152.22 09:20:00 15.85 637.20 09:25:00 13.10 25387.19 09:30:00 15.77 5485.02 09:35:00 16.88 4685.59 09:40:00 18.28 4743.99 09:45:00 15.72 470.47 09:50:01 16.72 493.55 09:55:00 15.61 646.27 10:00:00 16.61 590.49 10:05:00 16.63 1078.74 10:10:00 16.98 2303.44 -----> stop/start Psoft/Ost and oracle from 10:15 - 10:27am <---- semaphore back to normal rates. 10:15:00 15.82 17.97 10:20:00 9.27 16.40 10:25:01 3.43 8.64 10:30:00 17.49 17.85 10:35:00 17.52 17.81 10:40:00 16.38 18.27 10:45:01 15.21 17.25 10:50:00 16.32 17.78 10:55:00 15.42 17.84 11:00:00 16.84 18.47 11:05:00 17.00 18.27 _____ This email, including any attachments, may be confidential or privileged, and is sent for the personal attention of the intended recipient. 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