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Use

The Kernel user menu contains a display of the log files that are backed up when the database crashes, as well as the kernel message history.

Normally, at least the kernel log knldiag, the database trace log knltrace, and the memory dump rtedump are backed up if the database crashes. These files are in a subdirectory of the directory diaghistory, where they can be used for diagnoses.

Procedure

Open the Database Assistant (transaction DB50) or the liveCache Assistant (transaction LC10). Choose Start of the navigation path Problem Analysis Next navigation step Messages Next navigation step  Kernel Next navigation step History End of the navigation path.

The messages display is part of the DBA Cockpit and can therefore also be called as follows:

  1. Open DBA Cockpit (transaction DBACOCKPIT).

  2. The display options in DBA Cockpit vary depending on which SAP NetWeaver release you are using.

    • Choose Start of the navigation path Diagnosis Next navigation step Messages Next navigation step Kernel Messages: Historie End of the navigation path.

    • SAP NetWeaver 7.1: Choose Start of the navigation path Diagnosis Next navigation step Kernel Messages Next navigation step History End of the navigation path.

Result

The existing subdirectories of the diaghistory directory are displayed, sorted according to the time your backup was performed.

The available kernel message history (KnlMsg_<time_stamp> files) is displayed. You can open and analyze any of the log files.

More Information

DBA Cockpit:SAP MaxDB, Kernel Messages History

Database Administration, Log Files