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Candle-lite DB2 manual Evaluating and Modifying Thresholds, Displaying all exceptions

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Evaluating and Modifying Thresholds

Evaluating and Modifying Thresholds

When you investigate a yellow or red status light from the System Status panel, you may determine that the threshold values that caused the exception to trip did not really indicate a problem in your DB2 subsystem. In this case, you need to change the current threshold values for the exception to values that are appropriate for your site.

Displaying all exceptions

To display a list of exceptions and their threshold values for a monitored object on the System Status panel:

■Select a monitored object with the L (Control) action code, and press Enter.

Result: A pop-up window appears, which contains the exceptions and the threshold values associated with the object. In this example, the Active Threads Thresholds panel is shown.

	Active Thread Thresholds
R=Rules
Threshold description	Code Warning Critical	Units	Monitor

-------------------------------------------------------------------------

_ Archive log mount need			ARCM	OFF +	ON + (On/Off)		Yes +
_ CPU utilization %			TCPU	16	20	%	Yes
_ Getpage/read ratio			GETP	18	15	getpages	Yes
_ In-DB2 CPU time			IDBC	56	70	100th	Yes
_ In-DB2 time			IDBT	4	5	seconds	Yes
_ Page locks owned %			LKUS	64	80	%	Yes
_ Page update rate			PGUP	8	10	seconds	Yes
_ Resource limit percent			RELM	64	80	%	Yes
_ Sequential prefetch rate			PREF	8	10	/sec	Yes
_ Synch read I/O rate			RIO	8	10	/sec	Yes
_ Thread elapsed time			ETIM	480	600	seconds	Yes
_ Thread terminated indoubt			INDB	OFF +	ON + (On/Off)		Yes
_ Update commit			COMT	80	100	pag/comm	Yes
_ Wait for Archive Log Mode			WLGQ	48	60	seconds	Yes
_ Wait for DB2 Service			WSRV	24	30	seconds	Yes
_ Wait for thread-create			CTHD	OFF +	ON + (On/Off)		Yes
F1=Help	F4=Prompt	**=Bkwd	**=Fwd	F12=Cancel

Modifying thresholds

To modify any threshold or status setting on a thresholds panel:

■Move the cursor to the field you want to change and type in the new value.

Result: The Save Profile Confirmation pop-up appears. You can choose to save the new setting for this session only or you can save them to a profile.

78 OMEGAMON II for DB2 User’s Guide: CUA Interface, Version 540

Image 78

Candle-lite DB2 manual Evaluating and Modifying Thresholds, Displaying all exceptions, Modifying thresholds

Contents

User’s Guide CUA Interface Omegamon II for DB2 User’s Guide CUA Interface, Version Contents Index 129 List of Figures Omegamon II for DB2 User’s Guide CUA Interface, Version Preface Who should read this book Where to look for informationAbout This Book Documentation set informationPrinting problems? Adobe Portable Document FormatIntroduction Documentation Conventions REPORT=SUMMARY Histogram Candle Customer Service and Satisfaction Candle Customer Service and Satisfaction contactsBackground Page Omegamon II for DB2 User’s Guide CUA Interface, Version Historical Reporter redesign New IFCID-based reportsUnicode support Bit addressing supportLong name support Enclave supportNew Dsnzparm fields Distributed Thread display improvementsOmegamon II for DB2 User’s Guide CUA Interface, Version Chapter Contents IntroductionLogging on to the application Where applid is the application nameSigning On Sign On panelFields of the Sign On Panel are defined in the table below Accessing Omegamon from OmegaviewSign On panel fields Field DescriptionSetting Logon Options Logon Options panel fieldsLogical rows Number of logical rows Signing Off Returning to Omegaview from OmegamonPanel Features Panel featuresPart Feature Description Part Feature Description Highlighted data fields Data PanelsDescription ScrollingPushbuttons Action Bar Selecting from the action barFast pathing from the action bar Actions pull-down GoTo pull-down View pull-downOptions pull-down Tools pull-downHelp pull-down Available action codes Using an action codeAction Codes You can use these action codes in OmegamonFunction key assignments Default function key assignments are listed belowFunction Keys Function Name Assignment KeyOmegaview CUA/TSOPA1 PA2 OmegaviewHelp from the action bar Getting HelpHelp from a panel Help menu provides the following selectionsUsing the Glossary Searching the glossaryIf you are Help function keys Customizing Omegamon Introduction To access the Preferences pop-up window Accessing the Preferences windowUsing the Preferences window Specifying Panel PreferencesAction to occur Accessing the Terminal Options window Using the Terminal Options windowSpecifying Terminal Options Auto Values for SQL Description Process LevelManual SaveSaving Terminal Options Saving for current sessionSaving to a profile Using the thresholds windows Setting ThresholdsAccessing the Thresholds window Follow these steps to change threshold valuesSaving threshold values Adding a user Accessing user authoritiesAssigning User Authorities Deleting a userProfile types Accessing profile maintenanceMaintaining Profiles Omegamon II uses three different profilesD61A$DEFAULT Copying a profileDeleting a profile Importing a ProfileExporting a Profile Modifying a profile descriptionSwitching profiles Using the Dynamic Profile Update FacilityMVS Modify command for exporting a profile is as follows Example command for exporting a profileExample command for importing a profile MVS Modify command for importing a profile is as followsUsing the Filter Options window Setting Filtering Options for Near-Term Thread HistoryAccessing the Filter Options window To access the Filter Options pop-up windowTime Accessing the Save SQL Text Parameters window Using the Save SQL Text Parameters windowSpecifying Save Options for SQL Text Using the Callable Interface Set up the CUA options Set up the !DB/EXPLAIN optionsSQLID.PLANTABLE Setting Up !DB/EXPLAINSetting Up the CUA Options Step Action Log onto CUASetting Up the D2/EXPLAIN Options Use the following procedure to set up the D2/EXPLAIN optionsText and invokes the Explain function Use the following procedure to Explain SQL EXPLAINing SQL CodeAppend CPU % Press the Process SQL key Page Using Omegamon This chapter describes how to use OmegamonMonitoring from the System Status Panel DB2 subsystem componentsMonitored objects Investigating an alert Status indicatorsAlert notification Color StatusPerforming actions from the System Status panel System Status Components and Related Exceptions Cics exceptionsDescription Code Explanation Background exceptions IMS exceptionsTSO exceptions Utility exceptionsActive thread exceptions Following exceptions apply to active threadsInactive thread exceptions Buffer pool exceptionsFollowing exceptions apply to buffer pool resources Log manager exceptions EDM pool exceptionsLock statistics exceptions DDF statistics exceptionsFollowing exceptions apply to DB2 activity alerts DB2 activity exceptionsLock exceptions Following exceptions apply to lock alertsVolume activity exceptions Stored procedures exceptionsActive trace exceptions Following exceptions apply to alerts relating to triggers Triggers exceptionsUser-defined functions exceptions Following exceptions apply to user-defined functionsException recommendations Investigating an Active Threads AlertActive threads alert Investigating the exception conditionEvaluating and Modifying Thresholds Displaying all exceptionsModifying thresholds Adding or modifying rules Accessing near-term history data Reviewing Near-Term History DataThread activity for a reporting period Thread activity for a report interval Initiating a background application trace Specifying background application trace optionsViewing the list of background traces Size Size of the dataset in megabytes VolumeIdentifying the dataset to which trace data is written Name of the dataset you want to createActivities you can perform in a background trace request Using the Ifcid Trace Facility OverviewStarting an Ifcid Trace Displaying Ifcid Trace Data Stopping an Ifcid Trace Page Using Omegamon II for DB2 Background about !DB/EXPLAIN for DB2 Functions provided by !DB/EXPLAIN for DB2Using Omegamon II and !DB/EXPLAIN Complementary Functions When to use the complementary functionsAssumptions Using Omegamon II and !DB/EXPLAIN Complementary Functions Using the Omegamon II for DB2 Callable Interface Testc Current Sqlid is determined by the DB2 security exit Fields for Terminal Description Options SQL Text ATF. You can access the SQL Text panel through SAVE/EXPLAIN Required fields for the SAVE/EXPLAIN optionUsing the D2/EXPLAIN Options Panel PDSFrom the other !DB/EXPLAIN report sections that follow Press the Process SQL key Moving Interactively between !DB/EXPLAIN and Omegamon What functions can you use?Modes of operation Prerequisites for real time access Procedure to use the full function of !DB/EXPLAINWhat happens when you cancel the Omegamon II session? Using the Copy-and-Paste Facility in Omegamon Prerequisites to using the copy-and-paste facilityCapturing SQL from a running thread Capturing SQL using the ATF Prerequisites for using the Omegamon II trace information Accessing Omegamon II Trace Information from !DB/EXPLAINDirection of access Procedure to obtain current trace informationSources of information Task You Want to Perform Source of InformationPage Panel Navigation Flowcharts Appendix ContentsFlowchart Conventions System Status panelElement Description System Status DB2Workloads Panels Cics IMSTSO Workloads Panels Near-term history Cics IMS TSOResources Panels Resources Panels Realtime Resources Panels Near-Term History Alerts Panels Alerts Panels Installation Parameters Panels Installation Parameters Panels Application Trace Facility Panels Application Trace Facility Panels Object Analysis Panels Object Analysis Panels Thread Detail GoTo Panels Thread Detail GoTo Panels Realtime Thread History Detail GoTo Panels Near-Term History Index Omegamon II for DB2 User’s Guide CUA Interface, Version 131 Omegamon II for DB2 User’s Guide CUA Interface, Version