View source for Fix IPC for DB2 with Opensuse 15.3

= Fix DB2 crashes due to IPC on Opensuse 15.3 =

== Diagnosis == 

after an OS update recently DB2 stops shortly after starting.
Messages in the diaglog look like this:

 2022-05-05-14.15.13.311305+120 I68340E1888           LEVEL: Severe (OS)
 PID     : 25701                TID : 139866616620800 PROC : db2sysc 0
 INSTANCE: db2mspr              NODE : 000
 HOSTNAME: job4
 EDUID   : 12                   EDUNAME: db2thcln 0
 FUNCTION: DB2 UDB, oper system services, sqloWaitEDUWaitPost, probe:100
 MESSAGE : ZRC=0x8300002B=-2097151957
           
 CALLED  : OS, -, semop                            OSERR: EIDRM (43)
 DATA #1 : timeout value, 4 bytes
 -1

Application errors state DB2 is in an inconsistent state or it cannot handle new requests.

== Cause ==

Opensuse has changed a systemd login parameter.
Change it back and all is good again :)

== Remedy ==

edit /etc/systemd/logind.conf and make sure this option is set:
 [Login]
 ...
 RemoveIPC=no

Restart the login daemon for the change to take effect

 systemctl restart systemd-logind

Restart DB2

 sudo su - db2mspr -c db2start