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HAWQ-1480 - Added documentation for packcore utility (closes #123)
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outofmem0ry authored and dyozie committed Oct 12, 2017
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<a href="/docs/userguide/">HAWQ Administrative Log Files</a>
<a href="/docs/userguide/">HAWQ Packcore Utility</a>
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title: HAWQ packcore utility

Licensed to the Apache Software Foundation (ASF) under one
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to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
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Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
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## <a id="core_file_definition"></a>Core file

A core file is a disk file that records the memory image of a running process in the event the process crashes or terminates abruptly. The information in this image is useful for debugging the state of a process at the time when it was terminated.

## <a id="packcore_definition"></a>Packcore

The packcore utility helps pack a core file with its context, including the executable, application, and shared system libraries from the current environment. This information can be unpacked for later debugging on a different system. Packcore extracts the name of the binary that generated the core from the core file, then executes ldd (List Dynamic Dependencies) to create a single tar archive containing the core file information.

### <a id="using_packcore"></a>Using packcore

The packcore utility is located under `${GPHOME}/sbin`. Run one of the following commands to pack a core file:

$ $GPHOME/sbin/packcore <core_file>


$ $GPHOME/sbin/packcore -b|--binary $GPHOME/bin/postgres <core_file>

Alternatively, you can navigate to `$GPHOME/sbin` and run the following:

$ ./packcore <core_file>


$ ./packcore -b|--binary $GPHOME/bin/postgres <core_file>
When processing is completed, the utility creates a tar file in the format: packcore-<core_file>.tgz. Unpack this file on another system to use it for debugging.

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