Hostaname changed after restart of the application servers

[Former Member]

Hi all,

We have an issue in our production systems and the system got

restarted , we have observed there was a change in Hostnames where

previously it was in "LOWER CASE" and after the restart all the apps

servers showing as in "UPPER CASE".

We have checked the profile parameters, hostfile in the windows all are

in lower case only.

Please suggest from where the SAP picks the hostname entry ?

We are on 4.6c any DNS issue caused the hostname entry to be changed?

We have restarted the servers lot of times and the issue occured this time only.

Thanks,

Subhash.G

[Former Member]

Where exactly are you seeing this change in the host name. Could you kindly let us know. Also, SAP picks up the host name definitley from the profile files only. Check the default profile. If it is wondows open it in note pad and check what is the name of the host name given there. You can change it there. anyways the suggested thing is to change it from SAP level in the Tcode Rz10 ( select the Default profile). Then save it and then re-start all the instances for this change to take effect.

Regards,

Srini

[Former Member]

Hi,

Only the apps servers having this issue, i have checked the profiles and SAPLOCALHOST defined in "lowe case" only.

We have outage last weekend and failover to another cluster node 2 , all the names of the apps servers are showing as lower case in SM51 again.

Not sure why the hostnames are changing ..

Thanks,

Subhash.G

[Former Member]

Hi Subhash,

It must be profile parameters issue. If you have backup profiles taken before failover, please compare current profiles with backup ones.

Thanks,

Siva Kumar

[Former Member]

Hi,

Please check instance, default and start profile under /sapmnt/<SID>/profile for hostname parameter values.

Thanks,

Siva Kumar

[former_member185031]

Sap reads the hostname from the hostfile of the server itself.

Regards,

Subhash