Unloading and Reloading a DEDB
This section provides information on the capabilities, setup, and use of the unload and reload functions that are provided by Fast Path Reorg/EP. These functions let you unload a DEDB into any of several file formats, and reload from any of the file formats to a DEDB.
This section contains the following topics:
- Unload and reload function overview
- Preparing for an unload and reload
- Unload and reload function restrictions
- Unload function inputs and outputs
- DBRC considerations for Unloading and Reloading a DEDB
- UNLOAD command keywords and subcommands
- Specifying input and output for Unloading and Reloading a DEDB
- Allocating input area data sets for Unloading and Reloading a DEDB
- Allocating output unload data sets
- Unloading a DEDB by using a generalized randomizer
- Controlling segment expansion
- Controlling segment compression for Unloading and Reloading a DEDB
- Selecting SDEP processing method for Unloading and Reloading a DEDB
- Controlling subset pointer retention for unloading and reloading a DEDB
- Controlling the unload file format
- Selecting database segments for input
- Changing segment contents for Unloading and Reloading a DEDB
- Processing considerations for randomization of root segments to unprocessed areas - Unloading and Reloading a DEDB
- Samples of INCLUDE EXCLUDE and OUTPUT subcommands
- Controlling error tolerance
- Making an image copy during an unload
- Enhancing unload function performance
- Reload function inputs and outputs
- Reload DBRC considerations
- RELOAD command keywords and subcommands
- Specifying input and output areas for Unloading and Reloading a DEDB
- Allocating input area data set for Unloading and Reloading a DEDB
- Allocating output area data sets for Unloading and Reloading a DEDB
- Reloading an area from multiple input files
- Controlling free space in IOVF for Unloading and Reloading a DEDB
- Placing segments with load control for Unloading and Reloading a DEDB
- Controlling segment expansion for Unloading and Reloading a DEDB
- Controlling the segment compression
- Selecting the SDEP processing method
- Selecting the database segments for input
- Changing the segment contents
- Processing considerations for randomization of the root segments to unprocessed areas
- Handling exceptions
- Rebuilding indexes during reload
- Analyzing the DEDB during reload
- Making an image copy during reload
- Enhancing performance of the RELOAD function
- UNLOAD and RELOAD program extensions
- Sample UNLOAD and RELOAD command scenarios
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