000569: Failed to generate cache. All server contexts failed to cache map.
Description
This error message may occur for a variety of reasons when cache generation has been terminated or was not successful. The following are some of the most common scenarios:
Out of memory
One or more instances terminated for an unknown reason
One or more SOC machines went down or not accessible
ArcSDE connections or other references to data (disk drives or shared network drives) went down
Solution
Rerun the tool with appropriate options to begin the cache generation where it terminated. For example, consider the option to generate only empty tiles to avoid deleting all tiles and re-creating the cache from scratch. Also, consider caching map services using feature class extents with the status reporting option such that the tool can be rerun by skipping the features in the feature class that completed cache generation without any errors.
It is also a good practice to examine server log files for any errors. The log files are located at <ArcGIS Server Installation directory>\server\user\log on the SOM machine.