Question
Rabobank
NL
Last activity: 4 Oct 2018 13:54 EDT
Which cache directories can be cleaned?
This help article on Temporary files and temporary files directories states that the temporary file directory should not be deleted: https://pdn.pega.com/sites/pdn.pega.com/files/help_v721/procomhelpmain.htm#concepts/concepts2/temporary-files.htm But it doesn't say if certain directories can be cleaned up or not.
As we faced some disk space issues in our project, we want to clean up certain directories. To do this, I've looked at the directories on the system and their purpose. Not all directories I see on the system are mentioned in the help article. An example of a directory we want to clean is the ...cache/StaticContent/global/ServiceExport as it contains the imported zip-files (which are formally stored in another repository).
My main questions are:
- Is it advisable to remove files in the temp directories at all?
- If so, which directories can be cleaned? I've made an initial assessment in the table attached.
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Pegasystems Inc.
IN
Hi
as far as i know, PegaSearchIndex ; PRGenClasses and PRGenJava should not be deleted.
For ServiceExport, yes, you can delete the contents from there.
@Rajeev Ranjan , any thoughts ?
Rabobank
NL
Thanks for the partial answer. There are quite some directories in my list for which I'm not sure. For now, we'll take the approach to only clean the ServiceExport directory.
Coforge DPA
AU
Hi,
We can delete temp files, whenever we restart temp folder will create automatically.
And to make some space up archieve log files which are old enough.
Thanks,
Manikumar
Virtusa IT Consulting
AE
It depends on the usecase that you have, it is not always required to delete the entire temp directory as there can be consequences some times.
In case if you want to reassemble all class files you can delete Pega Extract marker txt file and restart the server.
For other directories like PRGenClasses, PRGenJava, if you delete these two and restart the server will populate the same directories again. There is one more folder called PRGenBackup is available which takes backup of older versions of generated files in PRGenJava and PRGenClasses directories.
For directories like PassivationData and PegaSearchIndex, deleting them will be risky if you are using File based passivation or have already built the indexes for search.
Pegasystems Inc.
US
In theory, the entire temp directory contents can be deleted if server is stopped. Wiping out the temp directory contents is typically overkill - and is not recommended when you're just cleaning up the file system. The help file you reference stipulates "Do not delete the temporary files directory". This is the directory location itself defined by "explicitTempDir". This should never be deleted.
As you address disk space usage, you should rely on SystemCleaner to maintain this PegaTEMP directory. This will clear old data that is not needed as well as historical data that is outside a "normal" time period (configurable with various settings). SystemCleaner will also take care of the logs stored elsewhere.
Rabobank
NL
Hi PaulGentile,
late response but as I remember the SystemCleaner didn't do his work (and the agent was enabled). One of the things we saw is that the passivation data was not cleaned up (many many old sessions). We now schedule a clean-up of the ServiceExport directory weekly to clean up non-recent product files, this already helped out.