Anyone has facing sudden disconnection from database with the follwing error?

WARNING : If you intend to use J/Foundation or GLS for Unicode feature(GLU) with
this Server instance, please make sure that your SHMBASE value specifies in onc
onfig is 0x40000000L or above. Otherwise you will have problems while attaching
or dynamically adding virtual shared memory segments. Please refer to Server mac
hine notes for more information.
Allocating and attaching to shared memory...FAILED
oninit: Fatal error in shared memory creation

Have you checked the value of SHMBASE in your onconfig file ?

Cheers
Neal

What is the portingset you are running on?