JIRA displays white screen

Question

Please some one help us in below issue

When jira end users try to access it then it displayed a white screen . 
This problem suddenly started. Our jira application running on linux machine.

Linux machine memory is 1GB.
We have 15 projects , 150 users and 4K issues.

I enquired with linux admin team regarding this issue . 
Admin Team told  memory exausted on linux machine.
Now memory increased from 1GB to 4GB.

Currently allowcated memory for JIRA in setenv.sh is as follows
JVM_MINIMUM_MEMORY="256m"
JVM_MAXIMUM_MEMORY="768m"

do i need to increase these memory to avoid problem?

Pedro Souza · Answer

Hello,

Please, clarify if the issue is happening when the users tries to access every page of JIRA, even the login Dashboard.

Also, see the documentation below for increasing the JVM memory, you may want to give it a try:

https://confluence.atlassian.com/display/JIRA/Increasing+JIRA+Memory

Tukaram Bhukya · Answer

One more thing , if its a context path problem then why it gives memory exausted error on linux server machine

Tukaram Bhukya · Answer

Thanks for reply. This jira is in use from 2012 , suddenly this problem started.

Could you tell me for existing jira also give this kind of problem