The problems summarised on this page have been divided into two categories:
- Numbered Errors - those errors
that have an error number associated with them.
- Symptomatic Problems -
those errors that do not have an error number associated with them.
Everything on these pages represents a problem that I have previously
encountered and the solution at that time. I believe the information to
be complete and correct, but if you find any errors or omissions then please
let me know (firstname.lastname@example.org).
Because every system is different, please review the advice on these
pages carefully. My experience of Oracle is limited to Windows NT - there
may be differences on other platforms. If in doubt, Oracle support should
always be regarded as the final authority for any problem.
Oracle Numbered Errors
Note: Some TNS related errors may be reported as ‘TNS-nnnnn’ rather than
‘ORA-nnnnn’. This seems to vary according to the tool that is reporting
the error. They are listed above according to how I first encountered the
I also have a small collection of errors that I've either not had time
to write up or have not been able to investigate thoroughly. My notes for
these are available here: "Other errors"
Oracle Symptomatic Problems
This page represents one page of many pages of notes I made whilst working
with Oracle 7 through to 10i. I now no longer work with Oracle databases,
but hope that these notes will continue to be of benefit to others.
About the author: Brian Cryer
is a dedicated software developer and webmaster. For his day job he develops websites and desktop applications as well as providing IT services. He moonlights as a technical author and consultant.