SAP Note 94556 - mt_shm_init: can't create resident segment

Component : Informix -

Solution : https://service.sap.com/sap/support/notes/94556 (SAP Service marketplace login required)

Summary :
This SAP Note addresses an error in shared memory creation indicated by symptoms like shmget operating system errors and fatal errors during initialization. The root causes involve issues with SNMP service or Informix server agents (ONSRVAPD.EXE) not being stopped, and misconfigured SHMBASE, SHMVIRTSIZE, and SHMADD parameters. The solution recommends validating SHMBASE settings, deactivating SNMP services and server agents, and rebooting the system. Post-reboot, the database should be started and then reconfigured for shared memory according to the settings advised in Note 38307. This configuration is critical for optimal Informix and SNMP service integration.

Key words :
registry key hklm\system\currentcontrolset\services\snmp\parameters\extensionagents, software\informix\onsnmpsubagent\currentversion          software\informix\cdrsnmpsubagent\currentversion, shared memory creation additional key words snmp onsnmp, settings -> control panel -> services, software\informix\onsnmpsubagentyou, operating system errormt_shm_init, informix-specific subagents, shared memory, prerequisites snmp service, create resident segmentoninit

Related Notes :

208107NT: R/3 server with Informix DB crashes regularly
136151INFORMIX: Shared memory under NT
38307Reducing shared memory consumption