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Every time you log into Sierra, the desktop client that you are running refers to a file on the Sierra server to confirm that your client is up to date and running the correct configuration. This information comes over in the jarfiles that get stored locally on your computer. During this check the Sierra client needs to have very stable communication back to the Sierra server, otherwise, it can have trouble downloading the correct jars and may end up with duplicates of some files, and missing other files.

Whenever the client and the server are not in sync you can see weird issues like loan rules not applying correctly or fields in records displaying in the incorrect order. However, it can be anything anywhere in Sierra. Sometimes, you can get lucky and have extra jarfiles and not notice issues. Marmot staff computers have a direct connection to the server instead of going over the internet, so we get exactly what the server has for files. This means that Marmot can verify how many files should be in the jarcache.

Sierra 6.0 should have 79 files in the jarcache. However, it is possible to have 79 files and still have a problem, but if you have more or fewer, you should refresh.

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Note: Expresslane self-checks are the same as regular Sierra desktop stations, and need to have their jarcache checked periodically.

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How to clear Sierra Jarcache on a PC

Make sure you are completely out of the Sierra program
Click on your file folder to get to your Local Disk C:
Note: For older computers, you may need to go to MyComputer or Computer to see your C: Drive
Double click on the folder Sierra Desktop App
Double click on the folder jarcache
Use Ctrl-A to highlight all the files
Right-click to bring up the option to delete
Click delete
1. This should clear all the files
Open Sierra
1. It may take a few minutes longer for the jars to load
Login to Sierra
Contact Marmot if you have questions marmothelp@marmot.org