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.jcp file extension

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.jcp
ESE Checkpoint file.

A .jcp file is a checkpoint file used by the Extensible Storage Engine (ESE). The Extensible Storage Engine is a database format used by a number of Microsoft applications.

Microsoft says of these checkpoint files:

The checkpoint file stores the checkpoint for a particular transaction log file sequence. ... Database operations are first written to the log files and then cached in memory. At some later point the operations get written to the database file ... the checkpoint refers to the point in time in the transaction log stream where all operations prior to the checkpoint have been written to the database file.

Checkpoint files might sometimes be given the file extension of .chk instead of .jcp.

For more information see:

Can you add to this? Do you know of any applications not already listed which will work with .jcp files, view .jcp files or open .jcp files? Are you able to contribute any additional reference information or file format information about .jcp files or have you spotted any errors or omissions? If so please let us know by emailing us at feedback@cryer.co.uk - Thank you.