Candle-lite DB2 specification

Using OMEGAMON II and !DB/EXPLAIN Complementary Functions

■In a review of an application, !DB/EXPLAIN highlights some potentially poorly-performing access paths and you want more detail about actual execution.

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

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Candle-lite DB2 manual Using Omegamon II and !DB/EXPLAIN Complementary Functions

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 Where to look for information About This BookWho should read this book Documentation set information Introduction Printing problems?Adobe Portable Document Format Documentation Conventions REPORT=SUMMARY Histogram Background Candle Customer Service and SatisfactionCandle Customer Service and Satisfaction contacts Page Omegamon II for DB2 User’s Guide CUA Interface, Version Historical Reporter redesign New IFCID-based reports Bit addressing support Long name supportUnicode support Enclave support New Dsnzparm fields Distributed Thread display improvements Omegamon II for DB2 User’s Guide CUA Interface, Version Chapter Contents Introduction Where applid is the application name Signing OnLogging on to the application Sign On panel Accessing Omegamon from Omegaview Sign On panel fieldsFields of the Sign On Panel are defined in the table below Field Description Setting Logon Options Logon Options panel fields Logical rows Number of logical rows Signing Off Returning to Omegaview from Omegamon Part Feature Description Panel FeaturesPanel features Part Feature Description Data Panels DescriptionHighlighted data fields Scrolling Pushbuttons Fast pathing from the action bar Action BarSelecting from the action bar Actions pull-down GoTo pull-down View pull-down Help pull-down Options pull-downTools pull-down Using an action code Action CodesAvailable action codes You can use these action codes in Omegamon Default function key assignments are listed below Function KeysFunction key assignments Function Name Assignment Key CUA/TSO PA1Omegaview PA2 Omegaview Getting Help Help from a panelHelp from the action bar Help menu provides the following selections If you are Using the GlossarySearching the glossary Help function keys Customizing Omegamon Introduction Accessing the Preferences window Using the Preferences windowTo access the Preferences pop-up window Specifying Panel Preferences Action to occur Specifying Terminal Options Accessing the Terminal Options windowUsing the Terminal Options window Values for SQL Description Process Level ManualAuto Save Saving to a profile Saving Terminal OptionsSaving for current session Setting Thresholds Accessing the Thresholds windowUsing the thresholds windows Follow these steps to change threshold values Saving threshold values Accessing user authorities Assigning User AuthoritiesAdding a user Deleting a user Accessing profile maintenance Maintaining ProfilesProfile types Omegamon II uses three different profiles D61A$DEFAULT Copying a profile Importing a Profile Exporting a ProfileDeleting a profile Modifying a profile description Switching profiles Using the Dynamic Profile Update Facility Example command for exporting a profile Example command for importing a profileMVS Modify command for exporting a profile is as follows MVS Modify command for importing a profile is as follows Setting Filtering Options for Near-Term Thread History Accessing the Filter Options windowUsing the Filter Options window To access the Filter Options pop-up window Time Specifying Save Options for SQL Text Accessing the Save SQL Text Parameters windowUsing the Save SQL Text Parameters window Using the Callable Interface Set up the CUA options Set up the !DB/EXPLAIN options Setting Up !DB/EXPLAIN Setting Up the CUA OptionsSQLID.PLANTABLE Step Action Log onto CUA Setting Up the D2/EXPLAIN Options Use the following procedure to set up the D2/EXPLAIN options Text and invokes the Explain function Append Use the following procedure to Explain SQLEXPLAINing SQL Code CPU % Press the Process SQL key Page Using Omegamon This chapter describes how to use Omegamon Monitored objects Monitoring from the System Status PanelDB2 subsystem components Status indicators Alert notificationInvestigating an alert Color Status Performing actions from the System Status panel Description Code Explanation System Status Components and Related ExceptionsCics exceptions IMS exceptions TSO exceptionsBackground exceptions Utility exceptions Active thread exceptions Following exceptions apply to active threads Following exceptions apply to buffer pool resources Inactive thread exceptionsBuffer pool exceptions EDM pool exceptions Lock statistics exceptionsLog manager exceptions DDF statistics exceptions DB2 activity exceptions Lock exceptionsFollowing exceptions apply to DB2 activity alerts Following exceptions apply to lock alerts Active trace exceptions Volume activity exceptionsStored procedures exceptions Triggers exceptions User-defined functions exceptionsFollowing exceptions apply to alerts relating to triggers Following exceptions apply to user-defined functions Investigating an Active Threads Alert Active threads alertException recommendations Investigating the exception condition Modifying thresholds Evaluating and Modifying ThresholdsDisplaying all exceptions Adding or modifying rules Thread activity for a reporting period Accessing near-term history dataReviewing Near-Term History Data Thread activity for a report interval Initiating a background application trace Specifying background application trace options Size Size of the dataset in megabytes Volume Identifying the dataset to which trace data is writtenViewing the list of background traces Name of the dataset you want to create Activities you can perform in a background trace request Starting an Ifcid Trace Using the Ifcid Trace FacilityOverview 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 DB2 Assumptions Using Omegamon II and !DB/EXPLAIN Complementary FunctionsWhen to use the complementary functions 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 option Using the D2/EXPLAIN Options Panel PDS From the other !DB/EXPLAIN report sections that follow Press the Process SQL key Modes of operation Moving Interactively between !DB/EXPLAIN and OmegamonWhat functions can you use? What happens when you cancel the Omegamon II session? Prerequisites for real time accessProcedure to use the full function of !DB/EXPLAIN Capturing SQL from a running thread Using the Copy-and-Paste Facility in OmegamonPrerequisites to using the copy-and-paste facility Capturing SQL using the ATF Accessing Omegamon II Trace Information from !DB/EXPLAIN Direction of accessPrerequisites for using the Omegamon II trace information Procedure to obtain current trace information Sources of information Task You Want to Perform Source of InformationPage Panel Navigation Flowcharts Appendix Contents Element Description Flowchart ConventionsSystem Status panel System Status DB2 Workloads Panels TSO CicsIMS Workloads Panels Near-term history Cics IMS TSO Resources 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