Oracle: Handle error codes with sqlplus

Tom Kyte explains it here:
http://tkyte.blogspot.fr/2010/04/new-thing-about-sqlplus.html

1. Start with

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   set errorlogging on identifier toto delete from sperrorlog where identifier = 'toto' /

2. Then use some sqlplus commands
3. And terminate with

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   col nb_errors new_value nb_errors select count(*) as nb_errors from sperrorlog where identifier = 'toto' / exit nb_errors

This allows for testings the return code of sqlplus in a bash / perl script.

NB: See http://ss64.com/ora/syntax-sqlplus.html for the sqlplus syntax