A SID (almost) uniquely identifies an instance. Actually, $ORACLE_HOME, ORACLE_SID and $HOSTNAME identify an instance uniquely.
The SID is 64 characters, or less; at least on Oracle 9i.
The system identifier is included in the CONNECT_DATA parts of the connect descriptors in a tnsnames.ora file.
The SID defaults to the database name.
[@more@]
来自 “ ITPUB博客 ” ,链接:https://blog.itpub.net/10599713/viewspace-1001723/
,如需转载,请注明出处,否则将追究法律责任。