server crash - db connection broken

[former_member233435]

Hello,

We had cold system reset after which sap won't start. In startdb.log or when I try to start db manually with dbmcli error message is:

Error! Connection failed to node mynode for database SID:

connection broken

How can debug what's wrong with the db, where to start?

Best Regards,

Sasha

[yashwanthkumar_kethineed]

Hello Sasha,

Check if the xserver is started and running on the Database server.

Starting X Server - SAP Documentation

Regards,

Yashwanth

[former_member188883]

Hi Sasa,

Firstly check whether all the filesystems are available and mounted.

Refer SAP note 803452 - MaxDB directories in UNIX clusters for failover

Regards,

Deepak Kori

[former_member233435]

All checks with sapdb tools run fine. But still db cannot be started, error code 5.

[former_member188883]

Hi Sasa,

Please attach knlmsg.log file

Regards,

Deepak Kori