To specify a data collection timing Mode
From the Operate menu of the Object menu, click Mode and then one of the Modes in the expanded menu.
CA Vantage SRM collects data in several ways. Therefore, data displayed in the object table can come from several sources. Every object has a default Mode, which is usually the one that provides the quickest access. You typically use the Mode option only when you have a specific reason to override the default.
Observe the following processing rules:
The possible Modes are:
The information displayed in the table was collected during the object's last regular scanning cycle on the host. The scanning interval to create each LI object is controlled by either a system parameter in PARMLIB, or by a scheduling command within its creation script.
The information displayed in the table is collected in real-time, on demand, in response to an end-user request for the specific object..
The information displayed in the table is a snapshot copy of a continuously updated object that changes dynamically as individual records within the object are being updated. When a snapshot copy is requested, CA Vantage SRM locks the object for as long as it takes to filter and copy the data. After the data is copied, CA Vantage SRM releases the object for further updates. The snapshot copy is then available for viewing while the original object is being updated.
The information displayed in the table is taken from a checkpoint version written to disk at scheduled intervals. The Disk Checkpoint mode is available to enhance performance in accessing objects in which a vendor's native API to the data is too slow for Real Time (RT) access, or the quantity is too great to keep in memory as a Last Interval (LI) object. Disk checkpoint data sets are created by system scripts that are configured according to instructions in the appropriate configuration chapters of the CA Vantage SRM Configuration Guide. Sample system scripts for this are distributed in the CCTUSAMP library.
Note: Because the purpose of Disk Checkpoint (DC) mode is to enhance response time performance, it is usually the default mode for those objects that support it.
The information displayed in the table is taken from a disk data set that is periodically updated, usually by some utility program from another vendor. The sample date and time displayed with the object table is the date and time when the utility program was run to update the disk data set. The Disk Interval mode is commonly used when another vendor does not provide a good external API to access their data, but they do provide a utility to extract their data to a file or to generate a report. When an object is created from the extracted data file, it is called a Disk Interval object, and it reflects the last data and time of the data extraction.
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