How to fix the Oracle error PGA-20999: SIGDANGER received from system – all conversations deallocated?

In this post, you’ll learn more about the Oracle ErrorPGA-20999: SIGDANGER received from system – all conversations deallocated with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

PGA-20999: SIGDANGER received from system – all conversations deallocated

Reason for the Error PGA-20999: SIGDANGER received from system – all conversations deallocated

Cause: The system sent a SIGDANGER signal to the server, indicating that there is a shortage of paging space. All currently active conversations are deallocated abnormally.

How to fix the Error PGA-20999: SIGDANGER received from system – all conversations deallocated ?

You can fix this error in Oracle by following the below steps

Action: Contact your system administrator.