Clarity PPM: How to flush or clear the cache?

Document ID : KB000023812
Last Modified Date : 08/03/2019
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Introduction:

A browser temporarily stores files that make up a webpage locally, because it is faster to retrieve and display information from the local hard disk, rather than making a full request from the server.

For example, every time the client browser makes a request for an image, the browser can retrieve this image from the local disk, which is faster than downloading it from the server.
During this process, the caches (locally stored temporary files) can become corrupted from events such as bad or incomplete page loads. If the webpage rendering is intermittently or 
inconsistently loading, take the following steps to rule out a caching issue.

The following errors can occur when trying to perform an action in Clarity:

Error 500 - Internal Server Error. The server could not retrieve the document due to server-configuration or other technical problems. Contact your site administrator.

Try to undo the action to see if the issue still persists. If the issue still persists, it is best to use the following steps to perform a complete cache flush to resolve the issue.

Instructions:

STEP 1: Clear the browser cache.

For Microsoft Internet Explorer® browsers:
Go to IE > Tools > Internet Options > General tab
In the 'Browsing history' section > click Settings button
a. Select radio button(Every visit to the page);
   for performance issues, select radio button(automatic);
b. Click view objects; delete what is listed in the window
c. Click view files; delete what is listed in the window 
d. Close out of all IE windows. 
e. Check if the problem persists


For Google Chrome™ browsers, use:
https://support.google.com/chrome/answer/95582?hl=en
Delete your cache, history, and other browser data

Go to Chrome > click Menu Icon (top right-hand corner)
a. Select More tools > Clear browsing data
b. Select the checkboxes for the type and amount of information that needs to be removed.
Select beginning of time to delete everything.
c. Click Clear browsing data.
d. Close out of all browsers.
e. Check if the problem persists

For Mozilla Firefox® browsers, use:
https://support.mozilla.org/en-US/kb/how-clear-firefox-cache
How to clear the Firefox cache

The issue should be resolved, after performing the above.

If the issue is not resolved at this point, please open a case before proceeding to the following steps:

STEP 2: Clear the CA PPM Server cache.
a. Login to CA PPM application as an admin user 
b. Modify the URL field to: http://<svr>/niku/nu#action:security.caches
c. Click Caches tab, click FLUSH ALL button
d. Click Groups tab, click FLUSH ALL button 
e. Logout
f. Login and check if problem persists.

If the problem is still not resolved, continue to Step 3...

STEP 3: Restart CA PPM app services.
If the problem persists when both steps above are taken, perform a rolling restart of all APP services.

Additional Information:

If having caching issues in the Advanced Reporting UI please run this step first.

On a Windows machine, the INET caches can be cleared.

Corruption in the TEMP folder can also cause performance issues such as Jaspersoft ad-hoc reporting slowness.
Use the following steps to further clear out possible corrupted temporary data.
1. Open command and type: %temp%
2. Delete the contents of the TEMP folder.
3. Check if issue persists.