我们使用SQL * Loader进行批量加载，我们编写了一个shell脚本来执行此操作。
当我执行脚本时，我收到此错误：
SQL*Plus: Release 11.2.0.1.0 Production
Copyright (c) 1982, 2009, Oracle. All rights reserved.
ERROR:
ORA-12514: TNS:listener does not currently know of service requested in connect
descriptor
Enter user-name: SP2-0306: Invalid option.
Usage: CONN[ECT] [{logon|/|proxy} [AS {SYSDBA|SYSOPER|SYSASM}] [edition=value]]
where <logon> ::= <username>[/<password>][@<connect_identifier>]
<proxy> ::= <proxyuser>[<username>][/<password>][@<connect_identifier>]
Enter user-name: ERROR:
ORA-01017: invalid username/password; logon denied
SP2-0157: unable to CONNECT to ORACLE after 3 attempts, exiting SQL*Plus
我可以使用SQL Developer登录数据库。所以用户和密码组合不是问题。
出了什么问题？