Managing IMS data stores

Use the Datastores and Datastore Groups tab in Status Monitor to perform management tasks on IMS™ data stores from the IMS Connect Extensions Operations Console. Use this facility to start and stop IMS data stores, suspend and resume routing to a data store, and to dynamically update a data stores capacity weight rating (CWR) in response to periods of changing demand.

Procedure

  1. Open the Datastores or Datastore Groups tab. See Displaying statistics on IMS Connect activity. A list of IMS data stores is displayed.
    Figure 1. The Status Monitor tab in the IMS Connect Extensions Operations Console for z/OS Explorer. Color highlighting has been applied to data stores in Degraded and Unavailable states
    The Status Monitor tab in the IMS Connect Extensions Operations Console for z/OS Explorer showing some IMS data stores are in Normal state, in the Degraded state with a GlobalFloodWarning and one in the Unavailable state.
    Use the following columns to review the status of each IMS data store:
    Status
    The status of the data store. A data store may be in one of the following states:
    Green circle ( Datastore active icon )
    The data store is active.
    Yellow diamond ( Datastore flood icon )
    The data store is experiencing a flood condition.
    Red square ( Datastore inactive icon )
    The data store is inactive.
    IMS Status
    This field shows the availability of an active IMS system for OTMA transactions. If the ICON status value is inactive or disconnected, IMS Status will be blank. If the ICON status value is active, the possible values of IMS Status are:
    Normal
    The IMS system is available for work.
    MemberFloodWarn
    The datastore is in a Member Flood Warning state.
    MemberFloodSevr
    The datastore is in a Member Flood Severe state.
    GlobalFloodWarn
    The datastore is in a Global Flood Warning state.
    GlobalFloodSevr
    The datastore is in a Global Flood Severe state.
    Unknown
    The target IMS system is V9 or earlier.

    See IMS Communications and Connections for more information on the Degraded (Warning) and Unavailable (severe) flood states.

    Routing Status
    The status of the data store as a candidate for OTMA routing in IMS Connect Extensions. A data store may be in one of the following routing states:
    Normal
    The data store is potentially a candidate for routing.
    NormalWLB
    The data store is potentially a candidate for routing, and workload balancing is active.
    Degraded
    The data store might be a candidate for routing but only if there are no other candidates in Normal state. This could be due to a warning-level IMS status.
    Unavailable
    The data store is not a candidate for routing. This could be due to a severe-level IMS status.
    SusCWRZero
    The data store has been suspended as a candidate for routing. Workload balancing is active and the data store has a capacity weight ratio of zero.
    Suspended
    The data store has been suspended as a candidate for routing. The data store has been drained without the autoresume option. The data store might be stopped .
    SusAutoRes
    The data store has been suspended as a candidate for routing. It will automatically resume routing when the data store has been stopped and then becomes active again.
    AutoRes or AutoResume
    The data store is stopped but if it is started it will automatically become a candidate for routing.
    Waiting reply
    A count of pending responses for each data store.
  2. Right-click on a data store to see a list of available actions:
    Option Description
    Start Start the data store.
    Stop Stop the data store.
    Route Drain Suspend routing to the IMS data store. The data store is withdrawn as a candidate for OTMA routing and is "drained" of in-progress transactions (which are allowed to complete normally). Use the Waiting reply column to monitor the number of pending responses. When the IMS data store has a Waiting Reply count of 0, use the Stop action to stop the data store.
    Route Drain with AUTORESUME Suspend routing to the IMS data store until an "IMS data store available" event record (X'10') is received at which point routing is automatically resumed.
    Route Resume Resume routing to the IMS data store (if routing was suspended). The IMS data store is once again a candidate for OTMA routing.
    Update Capacity Weight Change the processing capacity (capacity weight) for the selected IMS data store. Use this feature to redistribute workloads in response to periods of demand. Enter a new capacity weight value, click Next, and then click Finish. To retain the current value, click Back, select No Change, and then click Cancel.
    Figure 2. Suspend routing to an IMS data store (drain) in IMS Connect Extensions Operations Console for z/OS® Explorer
    Draining an IMS data store of transactions
    Note: If Show confirmation on Stop/Start is selected, a confirmation dialog is displayed before the data store is updated.