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Background documentation Log Files Locate the document in its SAP Library structure

SAP DB has different classes of log files. The table below shows which log files are generated by the database instance. The files are stored in the run directory and its subdirectories.

File name

Log class

File Content

knldiag
( KNLDIAG)

protocol

Current kernel log; this log is created when the database instance is started with the size specified in the special database parameter KERNELDIAGSIZE.

Messages about starts in the operational state ADMIN are not overwritten cyclically.
Messages from the normal operation are overwritten cyclically.

knldiag.old
( KNLDIAGOLD)

protocol

Last kernel log.

Each time the database instance is started, the file knldiag is renamed to knldiag.old.

knldiag.err
( KNLDIAGERR)

protocol

Kernel error messages

This file is not overwritten. New error messages are added to the end of the file.

knldiag.evt
(KNLEVT)

protocol

Log of database events

knltrace
(
KNLTRC)

dump

Log file of the database trace

This file can also contain information about the causes of crashes. This file is initialized each time the database instance is started.

<database_name>.prt
(KNLTRCPRT)

protocol

Test version of database trace

knldump
( KNLDUMP)

dump

Backup of the main memory information after a database crash

rtedump
( RTEDUMP)

dump

Memory dump from runtime environment of database instance

<database_name>.pah
( DBMPAHI)

protocol

History of database parameters

 

The following log files also exist:

dbm.*
dbahist.prt

Database Manager Log Files

loader.prt

SAP DB Loader Log File

xserver.prt

X-Server log file

SAPDB<profile>_install-
<date>-<time>.log

Log of the Standard Installation or the Update of the database software

 

These files belong to the liveCache database instance type (only in SAP systems):

lcinit.log

Start or initialization of liveCache with CCMS functions from the SAP system

lcinit.his

History of all liveCache actions
Information from the log
lcinit.log is added to this file.

lc<token>

Log of liveCache activities

 

 

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