Controls Diaphragm
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| NICE VACUUBRAND VACUUM PUMP MZ2C DIAPHRAGM VERY NICE DIGITAL CONTROL | |
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$2,500.00 End Date: Saturday Jun-9-2012 4:53:45 PDT Buy It Now for only: $2,500.00 Buy It Now | Add to watch list |
| BUCHI LABORATORY V 800 DIAPHRAGM VACUUM PUMP CONTROLLER 120V 412731030010 | |
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$1,424.99 End Date: Thursday May-24-2012 9:49:01 PDT Buy It Now for only: $1,424.99 Buy It Now | Add to watch list |
| TRERICE 910 SERIES DIAPHRAGM CONTROL VALVE 910 NEW | |
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$450.00 End Date: Thursday May-31-2012 18:32:43 PDT Buy It Now for only: $450.00 Buy It Now | Add to watch list |
| New Fisher Controls Industrial 1 Type 667 EZ Diaphragm Actuator Size 30 | |
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$449.99 End Date: Thursday May-24-2012 11:45:18 PDT Buy It Now for only: $499.99 Buy It Now | Bid now | Add to watch list |
| ITT ADVANTAGE DIAPHRAGM VALVE WESTLOCK CONTROLS 9920 BY Z11 2 TWO INCH PORTS | |
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$448.50 End Date: Saturday Jun-9-2012 11:32:24 PDT Buy It Now for only: $448.50 Buy It Now | Add to watch list |
| Prominent Fluid Controls Gamma 5 Metering Dosing Diaphragm Pump Gamma 5 | |
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$399.95 End Date: Thursday Jun-7-2012 12:19:06 PDT Buy It Now for only: $399.95 Buy It Now | Add to watch list |
| USED FISHER CONTROLS DIAPHRAGM ROTARY ACTUATOR TYPE 2052 SIZE 1 | |
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$390.00 End Date: Wednesday May-23-2012 12:18:21 PDT Buy It Now for only: $390.00 Buy It Now | Add to watch list |
| Johnson Controls Diaphragm Actuator Valve V5462 CV 54 NOS | |
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$350.00 End Date: Thursday Jun-7-2012 15:11:27 PDT Buy It Now for only: $350.00 Buy It Now | Add to watch list |
| HO TRERICE 910 SERIES DIAPHRAGM CONTROL VALVE 3 4 NEW | |
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$265.00 End Date: Friday Jun-15-2012 7:59:20 PDT Buy It Now for only: $265.00 Buy It Now | Add to watch list |
| NEW JOHNSON CONTROLS V 3000 8011 DIAPHRAGM ACTUATOR | |
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$229.99 End Date: Thursday May-24-2012 14:52:43 PDT Buy It Now for only: $229.99 Buy It Now | Add to watch list |
| Fisher Controls Diaphragm Relief Valve 289H 49 | |
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$227.97 End Date: Sunday May-27-2012 11:14:10 PDT Buy It Now for only: $227.97 Buy It Now | Add to watch list |
| Fisher Controls Diaphragm Relief Valve 289H 42 | |
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$227.97 End Date: Tuesday May-29-2012 7:21:44 PDT Buy It Now for only: $227.97 Buy It Now | Add to watch list |
| NEW CONTROL AIR D12LXXUM MOD 217 DIAPHRAGM AIR CYLINDER | |
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$199.99 End Date: Wednesday Jun-6-2012 14:21:53 PDT Buy It Now for only: $199.99 Buy It Now | Add to watch list |
| JOHNSON CONTROLS V 4710 604 VALVE DIAPHRAGM NEW | |
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$175.00 End Date: Saturday Jun-2-2012 14:46:39 PDT Buy It Now for only: $175.00 Buy It Now | Add to watch list |
| MERCOID PQ 3 X26 SERIES PQ PRESSURE SWITCH DIAPHRAGM OPERATED CONTROL 01 60 | |
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$175.50 End Date: Thursday Jun-14-2012 7:21:38 PDT Buy It Now for only: $175.50 Buy It Now | Add to watch list |
| NEW JOHNSON CONTROL V 3000 1 DIAPHRAGM ACTUATOR V 3754 1029 | |
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$165.00 End Date: Friday May-25-2012 10:26:32 PDT Buy It Now for only: $165.00 Buy It Now | Add to watch list |
| SARCO 25P80 5908 DIAPHRAGM SPRING STEAM REGULATOR | |
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$149.99 End Date: Thursday Jun-14-2012 15:30:02 PDT Buy It Now for only: $149.99 Buy It Now | Add to watch list |
| Robertshaw Diaphragm Control Vlave V8100 03108 | |
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$147.97 End Date: Thursday Jun-14-2012 12:30:26 PDT Buy It Now for only: $147.97 Buy It Now | Add to watch list |
| Johnson Control Diaphragm Valve | |
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$155.00 End Date: Tuesday Jun-5-2012 22:21:50 PDT Buy It Now for only: $155.00 Buy It Now | Add to watch list |
| UCV inch 3 Way Micro Flow Control High Purity Diaphragm Sealed Valve 10K 1 4 | |
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$149.99 End Date: Sunday May-27-2012 11:43:40 PDT Buy It Now for only: $149.99 Buy It Now | Add to watch list |
| New Johnson Controls 3 4 V 3000 8011 Diaphragm Actuator with V 9502 Positioner | |
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$149.99 End Date: Friday Jun-8-2012 14:48:45 PDT Buy It Now for only: $149.99 Buy It Now | Add to watch list |
| NEW JOHNSON CONTROL V 3000 1 DIAPHRAGM ACTUATOR V 3974 1004 | |
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$100.00 End Date: Friday May-25-2012 9:03:06 PDT Buy It Now for only: $100.00 Buy It Now | Add to watch list |
| Johnson Controls V 3000 1 V30001 Diaphragm Actuator USED | |
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$109.95 End Date: Monday Jun-11-2012 7:14:37 PDT Buy It Now for only: $109.95 Buy It Now | Add to watch list |
| JOHNSON CONTROLS V 3000 1 DIAPHRAGM ACTUATOR V 3974 1004 3 4 NEW | |
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$92.00 End Date: Friday Jun-1-2012 12:57:46 PDT Buy It Now for only: $92.00 Buy It Now | Add to watch list |
| JOHNSON CONTROL V 3000 1 DIAPHRAGM ACTUATOR V 3974 1004 3 4 NEW | |
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$90.00 End Date: Wednesday May-30-2012 12:22:01 PDT Buy It Now for only: $90.00 Buy It Now | Add to watch list |
| NIKON AF S VR 70 200MM F 28 G DIAPHRAGM CONTROL LEVER UNIT NEW REPAIR PART OEM | |
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$95.00 End Date: Monday May-28-2012 12:45:29 PDT Buy It Now for only: $95.00 Buy It Now | Add to watch list |
| Matheson Gas Co Manual Diaphragm Control Valve NIB | |
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$93.00 End Date: Tuesday Jun-12-2012 9:42:54 PDT Buy It Now for only: $93.00 Buy It Now | Add to watch list |
| Robertshaw VC 210B Diaphragm Control Valve 3 4 NO 81795 NIB FS | |
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$98.80 End Date: Saturday May-26-2012 14:58:54 PDT Buy It Now for only: $98.80 Buy It Now | Add to watch list |
| Fisher Controls Industrial Type 657 Diaphragm Actuator Size 30 | |
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$97.49 End Date: Saturday Jun-9-2012 13:36:48 PDT Buy It Now for only: $97.49 Buy It Now | Add to watch list |
| Fisher Controls 2E670002202 Diaphragm NEW NO BOX | |
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$95.77 End Date: Saturday May-26-2012 13:25:15 PDT Buy It Now for only: $95.77 Buy It Now | Add to watch list |
| Fairchild EB 02110 Control Diaphragm Assy Model M2000 | |
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$86.86 End Date: Sunday May-20-2012 6:02:15 PDT Buy It Now for only: $86.86 Buy It Now | Add to watch list |
| JOHNSON CONTROLS V 4710 603 VALVE DIAPHRAGM NEW | |
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$85.00 End Date: Saturday Jun-2-2012 14:54:53 PDT Buy It Now for only: $85.00 Buy It Now | Add to watch list |
| New Robertshaw 1 3 Way Diaphragm Control Valve Model VC 210 BN | |
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$89.99 End Date: Tuesday Jun-12-2012 9:18:34 PDT Buy It Now for only: $89.99 Buy It Now | Add to watch list |
| Johnson Controls VG7241CS Diaphragm Actuator 3801B0 | |
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$79.00 End Date: Thursday May-24-2012 22:31:52 PDT Buy It Now for only: $79.00 Buy It Now | Add to watch list |
| Robertshaw VC 210B Diaphragm Control Valve 3 4 NO 81795 NIB | |
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$88.80 End Date: Friday May-25-2012 10:10:20 PDT Buy It Now for only: $88.80 Buy It Now | Add to watch list |
| Mercoid Control Diaphragm Pressure Switch APF 153 37 | |
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$85.00 End Date: Saturday Jun-2-2012 12:48:15 PDT Buy It Now for only: $85.00 Buy It Now | Add to watch list |
| Fairchild EB 09679 1 Control Diaphragm Assy Model M21 | |
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$76.55 End Date: Sunday May-20-2012 6:02:25 PDT Buy It Now for only: $76.55 Buy It Now | Add to watch list |
| JOHNSON CONTROLS V 3000 1 DIAPHRAGM ACTUATOR NEW | |
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$75.00 End Date: Friday Jun-15-2012 21:31:16 PDT Buy It Now for only: $75.00 Buy It Now | Add to watch list |
| ITT General Control B50DF151A112 Diaphragm Gas Valve NEW NO BOX | |
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$82.98 End Date: Thursday May-31-2012 6:25:03 PDT Buy It Now for only: $82.98 Buy It Now | Add to watch list |
| JOHNSON CONTROLS V3802 1 25 PSIG OVAL DIAPHRAGM ACTUATOR ASSEMBLY | |
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$75.00 End Date: Saturday Jun-9-2012 13:12:55 PDT Buy It Now for only: $75.00 Buy It Now | Add to watch list |
| Pneumatic Diaphragm Actuator Steam or Water Valve JOHNSON CONTROLS | |
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$69.95 End Date: Thursday May-24-2012 7:50:19 PDT Buy It Now for only: $69.95 Buy It Now | Add to watch list |
| Johnson Controls V 3000 8003 Diaphragm Actuator | |
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$69.00 End Date: Wednesday Jun-13-2012 22:02:06 PDT Buy It Now for only: $69.00 Buy It Now | Add to watch list |
| JOHNSON CONTROLS V3854 7 8505 VALVE V 3800 DIAPHRAGM ACTUATOR NEW | |
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$65.00 End Date: Wednesday May-23-2012 12:15:47 PDT Buy It Now for only: $65.00 Buy It Now | Add to watch list |
| JOHNSON CONTROLS V3854 7 8404 VALVE V 3800 DIAPHRAGM ACTUATOR NEW | |
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$65.00 End Date: Tuesday Jun-5-2012 9:55:05 PDT Buy It Now for only: $65.00 Buy It Now | Add to watch list |
| JAGUAR XJ6 X300 CRUISE CONTROL AIR VACUUM DIAPHRAGM ACTUATOR | |
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$69.99 End Date: Sunday May-20-2012 19:51:04 PDT Buy It Now for only: $69.99 Buy It Now | Add to watch list |
| FISHER CONTROLS 2E806325062 DIAPHRAGM CASING LOWER | |
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$59.99 End Date: Friday May-25-2012 12:55:22 PDT Buy It Now for only: $59.99 Buy It Now | Add to watch list |
| NEW JOHNSON CONTROLS V 3000 1 DIAPHRAGM ACTUATOR VALVE ASSEMBLY | |
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$59.49 End Date: Saturday Jun-16-2012 15:49:53 PDT Buy It Now for only: $59.49 Buy It Now | Add to watch list |
| Mercoid Diaphragm Seal Control MSAH 06112 | |
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$59.00 End Date: Thursday May-31-2012 11:25:02 PDT Buy It Now for only: $59.00 Buy It Now | Add to watch list |
| Johnson Controls V 3000 1 Diaphragm Actuator | |
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$59.00 End Date: Wednesday Jun-13-2012 22:09:34 PDT Buy It Now for only: $59.00 Buy It Now | Add to watch list |
| NEW JOHNSON CONTROLS V3854 7 VALVE V 3800 DIAPHRAGM ACTUATOR | |
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$60.00 End Date: Saturday Jun-2-2012 10:37:20 PDT Buy It Now for only: $60.00 Buy It Now | Add to watch list |
| NEW JOHNSON CONTROLS V3854 9 VALVE V 3800 DIAPHRAGM ACTUATOR | |
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$60.00 End Date: Saturday Jun-2-2012 10:38:57 PDT Buy It Now for only: $60.00 Buy It Now | Add to watch list |
| JOHNSON CONTROLS DIAPHRAGM ACTUATOR V 3000 1 | |
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$54.00 End Date: Saturday May-19-2012 19:30:45 PDT Buy It Now for only: $54.00 Buy It Now | Add to watch list |
| Johnson Controls 4R Diaphragm V 4710 602 ++ NEW ++ | |
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$59.95 End Date: Saturday Jun-9-2012 1:36:15 PDT Buy It Now for only: $59.95 Buy It Now | Add to watch list |
| Johnson Controls V3854 4 8516 Diaphragm Actuator V3854 4 8516 | |
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$55.00 End Date: Saturday May-19-2012 14:21:09 PDT Buy It Now for only: $55.00 Buy It Now | Add to watch list |
| 1941 2 CHRYSLER DESOTO MOPAR VACUMATIC SHIFT CONTROL DIAPHRAGM NOS | |
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$59.99 End Date: Sunday May-20-2012 9:27:45 PDT Buy It Now for only: $59.99 Buy It Now | Add to watch list |
| Johnson Controls V 3802 V3802 Diaphragm Actuator Top NEW NO BOX | |
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$61.98 End Date: Monday Jun-4-2012 16:23:16 PDT Buy It Now for only: $61.98 Buy It Now | Add to watch list |
| NEW JOHNSON CONTROLS V3854 4 VALVE V 3800 DIAPHRAGM ACTUATOR | |
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$55.00 End Date: Saturday Jun-2-2012 10:40:53 PDT Buy It Now for only: $55.00 Buy It Now | Add to watch list |
| NEW JOHNSON CONTROLS V3854 3 VALVE V 3800 DIAPHRAGM ACTUATOR | |
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$55.00 End Date: Saturday Jun-2-2012 10:51:39 PDT Buy It Now for only: $55.00 Buy It Now | Add to watch list |
| Honeywell V88J 1022 1 1 4 Diaphragm Gas Valve 24v NIB | |
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$50.00 End Date: Sunday Jun-10-2012 7:57:59 PDT Buy It Now for only: $50.00 Buy It Now | Add to watch list |
| New Robertshaw VC 210B 3 4 Diaphragm Control Valve | |
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$59.99 End Date: Thursday Jun-14-2012 13:43:40 PDT Buy It Now for only: $59.99 Buy It Now | Add to watch list |
| NEW JOHNSON CONTROLS D 3244 615 DIAPHRAGM NO 5 PKG 2 | |
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$45.00 End Date: Thursday May-31-2012 23:43:04 PDT Buy It Now for only: $45.00 Buy It Now | Add to watch list |
| Johnson Controls V 4710 601 Comm Water Reg Diaphragm | |
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$42.99 End Date: Sunday Jun-17-2012 11:37:27 PDT Buy It Now for only: $42.99 Buy It Now | Add to watch list |
| D7OZ7A377A Ford Diaphragm Throttle Valve Control | |
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$48.91 End Date: Thursday Jun-7-2012 16:27:07 PDT Buy It Now for only: $48.91 Buy It Now | Add to watch list |
| JOHNSON CONTROLS RUBBER DIAPHRAGM 13444 | |
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$44.85 End Date: Tuesday May-29-2012 5:38:29 PDT Buy It Now for only: $44.85 Buy It Now | Add to watch list |
| NOS GM CRUISE CONTROL ACTUATOR VACUUM DIAPHRAGM SERVO | |
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$49.99 End Date: Monday May-21-2012 9:50:29 PDT Bid now | Add to watch list |
| NEW GOYEN CONTROLS MODEL 2503 DIAPHRAGM VALVE | |
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$44.99 End Date: Friday Jun-15-2012 9:27:52 PDT Buy It Now for only: $44.99 Buy It Now | Add to watch list |
| V 3000 1 Diaphragm Actuator Johnson Controls | |
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$50.00 End Date: Thursday May-31-2012 11:04:40 PDT Buy It Now for only: $50.00 Buy It Now | Add to watch list |
| E5TZ7A377C Ford Diaphragm Throttle Valve Control | |
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$46.18 End Date: Sunday May-20-2012 18:15:54 PDT Buy It Now for only: $46.18 Buy It Now | Add to watch list |
| Johnson Controls V 3100 611 Diaphragm | |
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$48.00 End Date: Thursday Jun-7-2012 6:18:10 PDT Buy It Now for only: $48.00 Buy It Now | Add to watch list |
| JOHNSON CONTROLS V 4710 602 VALVE DIAPHRAGM NEW | |
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$45.00 End Date: Saturday Jun-2-2012 14:57:16 PDT Buy It Now for only: $45.00 Buy It Now | Add to watch list |
| NEW IN BOX ROBERTSHAW 2580 010 DIAPHRAGM CONTROL VALVE V8000 16111 M86 | |
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$38.00 End Date: Wednesday May-23-2012 10:27:05 PDT Buy It Now for only: $38.00 Buy It Now | Add to watch list |
| Carten Control Valve Diaphragm 316L SPDt 250 0007 SS | |
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$45.00 End Date: Friday Jun-1-2012 14:11:49 PDT Buy It Now for only: $45.00 Buy It Now | Add to watch list |
| Johnson Controls V 3000 8003 Diaphragm Actuator MR | |
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$40.00 End Date: Sunday May-20-2012 20:55:41 PDT Buy It Now for only: $40.00 Buy It Now | Add to watch list |
| NEW Johnson Controls Diaphragm For Valve V 4710 602 | |
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$44.00 End Date: Monday May-21-2012 6:37:17 PDT Buy It Now for only: $44.00 Buy It Now | Add to watch list |
| Johnson Controls Damper Actuator Diaphragm D 251 6042 | |
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$44.00 End Date: Monday May-21-2012 6:46:53 PDT Buy It Now for only: $44.00 Buy It Now | Add to watch list |
| NEW JOHNSON CONTROLS V 3000 1 DIAPHRAGM ACTUATOR 3 4 | |
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$50.00 End Date: Sunday Jun-3-2012 6:32:04 PDT Buy It Now for only: $50.00 Buy It Now | Add to watch list |
| ELECTRICAL ROBERTSHAW 2580 005 DIAPHRAGM CONTROL VALVE V8000 04108 NEW IN BOX | |
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$49.99 End Date: Saturday May-26-2012 20:09:50 PDT Buy It Now for only: $49.99 Buy It Now | Add to watch list |
| ELECTRICAL ROBERTSHAW 2580 010 DIAPHRAGM CONTROL VALVE V8000 16111 NEW IN BOX | |
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$49.99 End Date: Saturday May-26-2012 20:09:53 PDT Buy It Now for only: $49.99 Buy It Now | Add to watch list |
| New Fisher Controls Type 82 Diaphragm Valve Repair Parts Kit No R82X0000022 | |
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$49.99 End Date: Wednesday Jun-13-2012 13:15:37 PDT Buy It Now for only: $49.99 Buy It Now | Add to watch list |
| Parker Veriflo 42600726 SS Dual Control Diaphragm Valve 944A0PLPNCSTS | |
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$39.99 End Date: Sunday May-20-2012 11:58:35 PDT Buy It Now for only: $39.99 Buy It Now | Add to watch list |
| New Johnson Controls V 3000 1 Diaphragm Actuator Valve NIB | |
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$39.99 End Date: Wednesday May-23-2012 5:40:04 PDT Buy It Now for only: $69.99 Buy It Now | Bid now | Add to watch list |
| NEW JOHNSON CONTROLS V 3000 8011 DIAPHRAGM ACTUATOR | |
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$39.99 End Date: Wednesday May-23-2012 11:29:46 PDT Buy It Now for only: $59.99 Buy It Now | Bid now | Add to watch list |
| JOHNSON CONTROLS DIAPHRAGM ACTUATOR V 3000 1 4332 1007 NEW | |
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$49.95 End Date: Wednesday May-23-2012 17:12:24 PDT Buy It Now for only: $49.95 Buy It Now | Add to watch list |
| Leslie Controls 12 OD Diaphragm N3781094 | |
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$49.95 End Date: Friday May-25-2012 13:34:21 PDT Buy It Now for only: $49.95 Buy It Now | Add to watch list |
| Robertshaw Diaphragm Control Valve V6800 25302 D37 | |
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$34.99 End Date: Friday Jun-8-2012 10:54:14 PDT Buy It Now for only: $34.99 Buy It Now | Add to watch list |
| D5AZ7A377A Ford Diaphragm Throttle Valve Control | |
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$40.75 End Date: Friday Jun-15-2012 21:04:44 PDT Buy It Now for only: $40.75 Buy It Now | Add to watch list |
| JOHNSON CONTROL DIAPHRAGM ACTUATOR VG741CS+3801BO | |
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$35.00 End Date: Saturday Jun-2-2012 22:06:47 PDT Buy It Now for only: $35.00 Buy It Now | Add to watch list |
| JOHNSON CONTROL DIAPHRAGM ACTUATOR VG7251SC+3801B0 | |
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$35.00 End Date: Saturday Jun-2-2012 22:13:34 PDT Buy It Now for only: $35.00 Buy It Now | Add to watch list |
| Johnson Controls 4R Diaphragm V 4710 602 NEW | |
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$42.49 End Date: Wednesday Jun-6-2012 2:26:52 PDT Buy It Now for only: $42.49 Buy It Now | Add to watch list |
| NEW IN BOX ROBERTSHAW 2568 014 DIAPHRAGM CONTROL VALVE V6800 06308 | |
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$32.80 End Date: Sunday May-20-2012 12:57:41 PDT Buy It Now for only: $32.80 Buy It Now | Add to watch list |
| JOHNSON CONTROLS DIAPHRAGM ACTUATOR V 3000 1 SIZE 3 4 | |
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$32.00 End Date: Saturday May-26-2012 12:45:22 PDT Buy It Now for only: $32.00 Buy It Now | Add to watch list |
| JOHNSON CONTROLS D 251 DIAPHRAGM OF RUBBER FOR NO 6 DAMPER ACTUATOR | |
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$45.88 End Date: Friday Jun-1-2012 11:07:12 PDT Buy It Now for only: $45.88 Buy It Now | Add to watch list |
| JOHNSON CONTROLS V 4710 604 VALVE DIAPHRAGM NEW | |
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$30.00 End Date: Wednesday Jun-6-2012 9:44:05 PDT Buy It Now for only: $30.00 Buy It Now | Add to watch list |
| Johnson Controls D 3153 600 D3153600 Diaphragm NEW | |
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$45.00 End Date: Monday Jun-11-2012 8:42:47 PDT Buy It Now for only: $45.00 Buy It Now | Add to watch list |
| Leslie Controls Diaphragm Valve Gain Control Adjuster | |
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$38.50 End Date: Sunday May-20-2012 17:06:20 PDT Bid now | Add to watch list |
| NIKON N50 DIAPHRAGM CONTROL UNIT NEW REPAIR PART OEM | |
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$39.00 End Date: Wednesday May-30-2012 13:13:50 PDT Buy It Now for only: $39.00 Buy It Now | Add to watch list |
| NEW JOHNSON CONTROLS V 3000 1 DIAPHRAGM ACTUATOR VALVES32D 1 | |
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$35.00 End Date: Friday May-25-2012 19:04:40 PDT Buy It Now for only: $35.00 Buy It Now | Add to watch list |
| ITT PILOTED DIAPHRAGM CONTROL VALVE S221 SERIES 2 WAY | |
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$41.99 End Date: Saturday Jun-2-2012 18:23:39 PDT Buy It Now for only: $41.99 Buy It Now | Add to watch list |
| GOYEN CONTROLS PNEUMATIC 3 DIAPHRAGM VALVE RCA45DD000 | |
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$40.00 End Date: Sunday May-20-2012 15:55:58 PDT Buy It Now for only: $40.00 Buy It Now | Add to watch list |
| Johnson Controls VG7241GT+3008B0 Diaphragm Actuator NEW | |
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$40.00 End Date: Friday Jun-1-2012 8:12:28 PDT Buy It Now for only: $40.00 Buy It Now | Add to watch list |
Database Performance Monitoring - Risks, Controls And Best Practices
Oracle and IBM DB2 relational databases are generally installed behind the scenes to support the key functions of data storage and retrieval. Database performance can be considered an area of potentially high risk that requires corresponding robust controls.
Specific risks related to database performance revolve around availability and business continuity. Poor database performance can affect an organization's reputation, delivery of services and compliance with service level agreements.
As IT auditors, we have seen a full range of database environments in terms of management and control in the course of our audits in some of the world's largest processing environments.
In the universe of risks and controls, preventive controls are preferable to detective or corrective controls. It is always better to prevent problems before they materialize into adverse conditions.
One area of preventive controls is performance monitoring which enables database administrators (DBAs) to proactively take action to ensure acceptable performance before issues materialize.
The degrading of database performance can usually be identified early through effective monitoring and reporting. Corrective measures may include increasing the use of indexes, redesigning or re-normalizing data, partitioning tables, expanding buffer pools, adding CPU processing power or changing system configuration. Still another corrective measure is to collect different or more accurate statistics. 2
IBM's approach to database performance monitoring is very methodical and is considered 'best practice.' First, objectives for database performance are established. Next, there is planning and implementation of specific monitoring. Performance reports must be analyzed on a regular schedule. Where performance is found to be unsatisfactory, database administrators must identify the constraints and tune the systems to balance resources. 2
A similar approach is found in the COBIT framework which includes an IT 'process' to 'monitor and evaluate IT performance.' COBIT's specific control objective of 'performance assessment' is to periodically review performance against targets, analyze the cause of any deviations and initiate remedial action to address the underlying causes.'
The setting of performance objectives involves defining what good performance is. The objectives should be realistic, understandable and measurable. The objectives for database performance generally consist of values for: For more information visit Database administration
-Response time which is measured by acceptable response time for end users, total transit time, accounting elapsed time (first SQL statement to thread termination).
-Throughput: average throughput (the total number of transactions or queries that complete within a given time)
-System availability which can be measured by duration of down times and mean time to failure. For more information visit Database outsourcin
These kinds of objectives can be used to define requirements for resources such as processor speed, amount of storage, I/O and disk speed and capacity and additional hardware and software.
To achieve these objectives, there are four levels of actual performance monitoring and analysis as follows:
-Continuous performance monitoring of statistics and deviations from past experience such as during peak periods.
-Periodic performance monitoring of 'snapshots' during peak loads and during normal conditions. Trends can be identified.
-Detailed performance monitoring to research specific issues that have been identified.
-Exception performance monitoring which looks for specific exceptional values or events, such as very high response times or deadlocks.
To sum up, database performance monitoring should be taken seriously in light of the risks associated with performance degradation. IBM's framework can be used to develop a robust performance monitoring program. Performance objectives should include database response time, throughput and system availability. Degraded performance that has been identified should be remediated through targeted changes to database objects, system hardware and software configurations.
Article done by Sarah Abelow Article Source: http://EzineArticles.com/?expert=Sarah_Abelow