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 Pager 

Pagers (data writers) are tasks in the user kernel thread. They are responsible for writing data from the data cache to the data volumes. Pagers become active at every savepoint.

Writing a savepoint can take a long time for a large data cache. In this case, the pagers also become active between the end of a savepoint and the start of the next one, to write the changed data asynchronously.

When the database system is restarted, the pagers import the converter pages from the data volumes into the converter (a component of the I/O buffer cache).

The system calculates the number of pagers required. It depends primarily on the data cache size and the number of data volumes.

 

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