SAP: Can’t open shared memory administration (rc=3)

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JControl Monitor Program - Main Menue
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0 : exit
10 : Cluster Administration Menue
20 : Local Administration Menue
command => 20
Can't open shared memory administration (rc=3)

Solution

1. Check the JAVA or any related processes are running. Make sure the jcontrol, dispatcher, message server is up and running. If no processes are running, please proceed to the SAP startup.

# ps -ef | grep jc

# ps -ef | grep SIDadm

2. If the processes are up and running, but the shared memory error is still occured. Please proceed with the below procedure.
• Shutdown the SAP
• clean ipc

# cleanipc <instance-number> remove

# ipcrm -s <sephamore#>

# ipcrm -m <sephamore#>

• Start the SAP

Note

To check the sephamore, execute below command

# ipcs | grep -i SIDadm