How to trace an error

Question

Dear all,
How to trace a purticular error ?
from metalink
Diagnose the issue by running the following trace
alter system set events '1775 trace name ERRORSTACK level 3';
Redo the import and reproduce the error. The trace file should be in the
USER_DUMP_DEST directory.
alter system set events '1775 trace name errorstack off';
Trace file will show something like the following:
ksedmp: internal or fatal error
ORA-01775: looping chain of synonyms
Current SQL statement for this session:
SELECT COUNT(*) FROM SYS_IMPORT_TABLE_01
I am getting the same ora 01775 error. But when I am tracing, I am not getting any result in my udump. Is there any other setting do I have to make to get the trace file?
Thanks

Answer 1

Your question can not be answered.
Not only you don't include a version (this seems to be too difficult for most posters here), but you also include ambiguous sentences like 'When I am tracing'.
This results in the question 'did you issue the alter system command and was it successful?'
As far as I am aware the syntax is
alter system set events='<errornum> trace name errorstack level 3';
There are no other 'settings'
The only other solution is to set up an afterserver error trigger.
Works like a charm, 8i onwards.
You uncover way too many things you don't even want to know!
Sybrand Bakker
Senior Oracle DBA