Information on all types of database problems can be found in the trace and ALERT files, where the actions in the database are recorded.
ALERT file:
Trace files of the background processes:
Trace files of the user processes:
<SAPDATA_HOME>/saptrace/usertrace/<process>.trcThe directories where the ALERT and trace files are stored are defined by the init.ora parameters
background_dump_destination and user_dump_destination .The naming conventions for the trace files depend on the operating system. Under UNIX, the name of the trace file contains the operating process number, the Oracle process number and the Oracle system ID.
A trace file can contain the following information: