Defining loop check profiles to reset the IMS region after a stop is in progress

Use the following procedure to define a loop check profile to reset the IMS region when a stop is in progress.

This profile creates an alarm that detects an IMS looping region where a STOP REGION ABDUMP is in progress, but has not completed. This alarm provides the ability to quiesce a region that has been looping for about 90 seconds or more. If desired, you can specify that the alarm:

• Write a WTO to the system console when a job matches all the criteria
• Trigger a reset to the slowest WLM service class

To define a loop check profile to reset the IMS region after a stop is in progress

1. From the MainView for IMS easy menu (EZIMS), select IMS Easy Admin Menu.
2. From the IMS Easy Admin Menu (EZIALPRF), select Solution Profiles.
3. From the list of profiles for looping dependent regions, select Issue MSG and/or RESET Service Class.
   The ILPCKPLQ view is displayed as shown in the following figure:
   

4. On the COMMAND line, type ADD and press Enter.

   The Loop Check Criteria Profile displays as shown in the following figure:

   -------------------- Loop Check Criteria Profile - Add -------------------
   COMMAND ===>                                             SCROLL ===> CSR
                                                                      MORE:+
    WTO and/or RESET                          
    Profile Identity                                                            
    Profile Name:                                                               
    Profile Desc:                                                               
                                                                               
    Loop Criteria                                                               
    Elapsed Transaction CPU Trigger..:          (hh:mm:ss)                      
    Current CPU Usage Percent Trigger: 95       (0-100) percent                 
    I/O Rate per sec....:      (0-9999) operand    (= or >=)                    
    DL/I Rate per sec...:      (0-9999) operand    (= or >=)                    
    SQL Rate per sec....:      (0-9999) operand    (= or >=)                    
                                                                               
    IMS Jobname:          (Specific or generic)                                 
    IMS Application Region Job Names                                            
    Include:                                                                    
    Exclude:                                                                    
    Region Types (see help for types)                                           
    Include:                                                                    
    Exclude:                                                                    
    Transaction Names                                                           
    Include:                                                                    
    Exclude:                                                                    
    LTERM Names                                                                 
    Include:                                                                    
    Exclude:                                                                    
    Program Names                                                               
    Include:                                                                    
    Exclude:                                                                    
    Action(s)                                                                   
    WTO....:   (Y -Yes)                                                         
    RESET WLM service class:          (Specify lowest WLM service class)             
    Show Alarm Parameters:            (Y -for debugging purposes)    
                                                                         
    END to exit and save changes                                                
    CANcel to exit without saving changes                                       
    HELP to view related help 
5. Specify the profile's name, description (optional), and criteria:
   1. At Profile Name, enter a unique alphanumeric name for the profile, up to 12 characters, starting with an alphabetic or national character.
   2. (optional) At Profile Desc, enter a short description of the profile.

   3. At Loop Criteria, define the criteria that must be met to trigger the alarm:

      Loop Criteria	Description
      Elapsed Transaction CPU Trigger	Identifies the minimum amount of transaction CPU usage time that a region must accumulate to be considered as a looping candidate The value you specify must be in hh:mm:ss format. The time you specify applies to the currently active transactions, not total transaction CPU usage time for the region.
      Current CPU Usage Percent Trigger	Identifies the minimum CPU percentage that a region must be consuming to be considered a looping candidate Valid values are integer values from 0 through 100.
      I/O Rate per sec	Identifies the minimum DL/I I/O rate per second that a region must achieve to be considered a looping candidate Valid values are integer values from 0 through 9999.
      DL/I Rate per sec	Identifies the minimum DL/I call rate per second that a region must be doing to be considered a looping candidate Valid values are integer values from 0 through 9999.
      SQL Rate per sec	Identifies the minimum SQL call rate per second that a region must be doing to be considered a looping candidate Valid values are integer values from 0 through 9999.

      Note

      The alarm criteria must be met by two consecutive samples taken once every 45 seconds for the alarm to trigger. Additionally, if you want any of the loop criteria ignored, leave the field empty.

6. At IMS Jobname, specify the IMS job name for this profile.
7. Under IMS Application Region Job Names, specify jobs to which this profile should or should not apply:
   1. At Include, enter up to five IMS application region job  names to which this profile applies.

   2. At Exclude, enter up to five IMS application region job names to which this profile does not apply.

      Note

      Specify full or generic names. For generic names, you can use a single trailing asterisk (*), but you cannot use the plus sign (+) wildcard.

      If you leave the Include field blank, the profile applies to all jobs except those that you list in the corresponding Exclude field.

      Example

      Assume that you want to apply a profile to all jobs that start with PROD except for those that start with PROD123. Enter PROD* in the Include field and PROD123* in the Exclude field.

8. Under Region Types, specify the region types to which this profile should or should not apply:
   1. At Include, enter up to four region types to which this profile applies.

   2. At Exclude, enter up to four region types to which this profile does not apply.

      Note

      Valid types are BMP, JBP, MPP, JMP, DBT, ODB, MDP, CON, TPI, NDP, FPU. 

9. Under Transaction Names, specify up to five IMS transaction names that identify jobs to which this profile should or should not apply:
   1. At Include, enter up to five transaction names to which this profile applies.

   2. At Exclude, enter up to five transaction names to which this profile does not apply.

      Note

      For generic names, you can use a single trailing asterisk (*), but you cannot use the plus sign (+) wildcard.

10. Under LTERM Names, specify up to four IMS LTERM names that identify jobs to which this profile should or should not apply:
    1. At Include, enter up to four IMS LTERM names to which this profile applies.

    2. At Exclude, enter up to four IMS LTERM names to which this profile does not apply.

       Note

       For generic names, you can use a single trailing asterisk (*), but you cannot use the plus sign (+) wildcard.

11. Under Program Names, specify up to five IMS program names that identify jobs to which this profile should or should not apply:
    1. At Include, enter up to four IMS LTERM names to which this profile applies.

    2. At Exclude, enter up to four IMS LTERM names to which this profile does not apply.

       Note

       For generic names, you can use a single trailing asterisk (*), but you cannot use the plus sign (+) wildcard.

12. At Action(s), perform any of the following specifications:

    1. (optional) At WTO, specify Y if you want the alarm to write a WTO to the system console when a job matches all of the criteria in this profile. 

       The WTO can be used by operations to take action or can be used by an automation product such as MainView AutoOPERATOR to take automated action on the job. 

       Note

       Security resource 'BBM.COMMON.OPERCMD.PA' must be defined to your ESM (IBM RACF product or CA Technologies CA ACF2 or CA Top Secret product) with proper authority to use the STOP REGION ABDUMP command. 

    2. (optional) At RESET WLM service class, specify a WLM service class name that provides the lowest possible level of service.

       This action quiesces the looping region. Additionally, the region's status is set to ABDUMP in progress until you stop IMS or otherwise cancel the region.

       Note

       Security resource 'BBM.COMMON.OPERCMD.PA' must be defined to your ESM (IBM RACF product or CA Technologies CA ACF2 or CA Top Secret product) with proper authority to use the STOP REGION CANCEL command. 

       Warning

       This command is prefixed by the IMS ID or CRC of the IMS the job you specified in step 6. If you have multiple IMS systems on the same LPAR with the same IMS ID or CRC, you should not use this option because it could cause the wrong IMS regions to be stopped.

13. At the COMMAND line, type END to save the profile.

    Saving the profile automatically enables it. You do not need to manually enable the profile. MainView for DBCTL creates an alarm based on the profile and based on a default alarm definition. Now, whenever a job meets all of the profile's criteria, MainView for DBCTL will take any actions defined in the profile and will generate an alert.