Log files record information and messages about the actions of the database system and the database tools.
The following table lists the most important log files that are created by the database system and its tools.
General log files
File name (File ID) |
Directory |
Contents |
knldiag (KNLDIAG) |
Run directory on the database instance |
Current kernel log; contains all kernel messages (error messages, warnings and information) Is created each time the database instance is started with the specified size in the special database parameter KERNELDIAGSIZE. All messages from operation are overwritten cyclically; messages for starting in the ADMIN operational state are an exception to this. |
knldiag.old (KNLDIAGOLD) |
Run directory of the database instance |
Last kernel log; when the database instance is started, the knldiag file is renamed knldiag.old. |
knldiag.err (KNLDIAGERR) |
Run directory of the database instance |
Kernel error messages; this file is not overwritten. New error messages are appended to the end of the file. |
knldiag.evt |
Run directory of the database instance |
Log of the database events |
knltrace (KNLTRC) |
Run directory of the database instance |
Log file of the database trace; can also contain information about the cause of the crash. The file is initialized each time the database instance starts. |
<database_name>.prt (KNLTRCPRT) |
Run directory of the database instance |
Text version of the database trace |
knldump (KNLDUMP) |
Run directory of the database instance |
Backup of the main memory information after a database crash |
rtedump (RTEDUMP) |
Run directory of the database instance |
Memory dump of the runtime environment of the database instance |
<database_name>.pah (DBMPAHI) |
Configuration directory of the database instance |
History of the database parameters |
liveCache-specific log files
File name |
Directory |
Contents |
lcinit.log |
Run directory of the database instance |
Information for starting, stopping and initializing the SAP liveCache with the CCMS function of the SAP system |
lcinit.his |
Run directory of the database instance |
History of all start, stop and initialization actions in the liveCache. The information from the lcinit.log log is attached. |
Database Manager log files
File name (File ID) |
Directory |
Contents |
dbm.prt (DBMPRT) |
Run directory of the database instance |
Log of the DBM Server |
dbm.utl (UTLPRT) |
Run directory of the database instance |
Log of the utility commands |
dbm.ins (INSTPRT) |
Run directory of the database instance |
Log of loading/updating the system tables |
dbahist.prt (DBAHIST) |
<independent_data_path>\wrk\dbahist |
Log of the database administration activities |
dbm.knl (BACKHIST) |
Run directory of the database instance |
Backup history if no external backup tools are used |
dbm.mdf (BACKMDF) |
Run directory of the database instance |
History of the backup media used for the backups |
dbm.ebf (BACKEBF) |
Run directory of the database instance |
Backup history if external backup tools are used The dbm.ebf log file identifies the backup ID and the external backup ID for each backup. |
dbm.ebp (BACKEBP) |
Run directory of the database instance |
Log of the last backup using an external backup tool |
Loader log files
Name |
Directory |
Contents |
loader.prt |
<user_home>\sdb\loader |
Loader log file; instance-independent |
transport.log |
<user_home>\sdb\loader\data |
History file of the transports, exports and imports performed by the Loader |
X Server log files
Name |
Directory |
Contents |
xserver_<server_name>.prt |
<independent_data_path>\wrk |
X Server log file; instance-independent |
Database Analyzer log files
Name |
Directory |
Contents |
(See Database Analyzer, List of Log Files) |
<independent_data_path>\wrk\analyzer |
Log files of the Database Analyzer |