SAP HANA Services and runlevels

[Former Member]

Hello,

I would like to stop HANA services and prevent them temporarily from being restarted for testing purposes.

In daemon.ini I came across the runlevels of the services in daemon.ini and I suppose it has to do with that. The several services show numbers between 1 and 5; e.g. compileserver (hdbcompileserver) is on runlevel 2.

1.st could anyone please explain these runlevels ? Are they resposible for restart of services ?

2nd which value do I have to choose in order to prevent a restart

3rd: Are these parameters dynamic or static (do I have to reboot before it is valid?)

Any correct solution to this?

OS:      SLES11.1

HANA: 1.00.70.x

Many thanks in advance,

Marco

[nicholas_chang]

Hi Marco,

If for testing purpose and you would like to restart specific services, you and do it via hdbstudio -> Landscape -> Services -> Right on the service you want to stop -> Stop

Hope it helps,

[Former Member]

Hi Nicholas,

the problem is that HANA services will be restarted right away when you do it via hdbstudio -> Landscape -> Services -> Right on the service you want to stop -> Stop.

I want NOT to have it restarted immediately but I want to control the status of the service.

Regards,

Marco

[nicholas_chang]

Hi Marco,

else, you can try to manually start each service you want.

as SIDadm, execute HDB stop.

then as SIDadm, you can manually start each service by:

hdbindexserver

hdbnameserver

hdbstatisticsserver

etc

Hope it helps,

Nicholas Chang

[Former Member]

Hi Nicholas,

unfortunately I have to completely start all services first.

Then we have to test with subsequently stopping services (first stop of compileserver, second stop of statisticsserver and so on). So I can not stop the whole HDB server and start one service after the other.

Regards

[nicholas_chang]

perhaps the last method i can think of is try to play around with HDB admin.

[nicholas_chang]

Hi Marco,

Found out a way to stop specific service only.

you just need to remove the hana services in daemon.ini.

eg below: i removed the preprocessor services and saved:

In administration tab, you'll see preprocessor service is stopped:

preprocessor is start once you reset the parameter. just you've backup global and local *.ini file before any changes.

Hope it helps.

Cheers,

Nicholas Chang