Persistent data store V1 (PDS V1)
The persistent data store (PDS) is a set of files used for storing and retrieving near-term historical data. The content in this section applies to PDS V1.
If you intend to collect historical data, you must make provisions to manage the collected data. Without additional action, on distributed computers, the history data files grow unchecked, using up valuable disk space. On z/OS®, the data sets allocated to store historical data are maintained by the persistent data store, which empties and reuses the data set with the oldest data. As you collect and use the historical data, you might want to adjust the size of the data sets allocated.
The topics in this section explain how the persistent data store works, document the maintenance procedure and options, and provide instructions for setting up tracing for troubleshooting problems with the persistent data store.
- Decision 8: Whether to collect historical data and how to manage it
- Allocate data sets and configure maintenance for historical data
- How to: Change PDS file count and file size
- How to: Reallocate PDS files
- (Optional) Enable maintenance of the historical data store
- (Optional) Configure historical data collection