2635791 - Shortage on VMC sessions (java.lang.Exception: No session)

Transaction SM52 shows error:
  Last Error Text Error occurred during program execution
  Time    <date>, <time>
  User    <user_name>
  WP      <wp_nr>
  Virtual Machine <vm_nr>
  VM Error Text   Found no session key in kernel session table.
  Program           <VMC EVENTS DELETE_STATE>

Checking involved work process trace file (dev_w<wp_nr>), you find:

M *** ERROR => DpSesCreateEntry2: session table full [dpxxses.c 697]
M *** ERROR => createSessionEntry: ThSesCreateEntry failed (TH_SES_TABLE_FULL) [thxxvmemu.c 5308]
J <VMC Vnr> Error com.sap.vmc.remserver.RFCDispatcher VMnr [RFC Server (in-process)] Execution of function module <FM_name> \#
J > java.lang.Exception: No session
J #at com.sap.vmc.remserver.HandlerBuilder.getSharedHandler…
J #at com.sap.vmc.remserver.HandlerBuilder….
[...]

You may also get RFC_VMC_COMMUNICATION_ERROR dump on ST22:

   Short Text
     Error during VM Container communication between ABAP and JAVA.

     Message = TH_VMC_SERV_SESSION_DELETED
     Return code = -1008

SAP NetWeaver system running VMC

java.lang.Exception: No session, No session, DpSesCreateEntry2: session table full, DpSesCreateEntry2, session table full,
TH_SES_TABLE_FULL, createSessionEntry: ThSesCreateEntry failed, createSessionEntry, ThSesCreateEntry failed , KBA , BC-VMC , Virtual Machine Container , BC-VMC-CON , Container , Problem