Returns an error message of the form XXX-NNNNN where XXX is where the error comes from
and NNNNN identifies the
error message.
注: Support for connection ids was added in 3.0.4.
On UNIX versions of Oracle, you can find details about
an error message like this:
$ oerr ora
00001 00001, 00000, "unique constraint
(%s.%s) violated" // *Cause: An update or insert statement
attempted to insert a duplicate key // For Trusted ORACLE
configured in DBMS MAC mode, you may see // this message if a
duplicate entry exists at a different level. // *Action:
Either remove the unique restriction or do not insert the
key