conn username/password@servicename

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conn username/password 方式连接的时候，会碰到这样的错误问题

ERROR:
ORA-00942: table or view does not exist

Error accessing PRODUCT_USER_PROFILE
Warning: Product user profile information not loaded!
You may need to run PUPBLD.SQL as SYSTEM


解决方法：
需要使用system用户登陆并执行pupbld.sql脚本，不能用SYSDBA。
每个人安装目录不同，可能pupbld.sql位置不确定，你可以locate pupbld.sql 查找一下。

oracle@prd:/home/oracle/impdir$sqlplus /nolog
SQL*Plus: Release 11.2.0.4.0 Production on Mon Mar 21 00:14:52 2022
Copyright (c) 1982, 2013, Oracle.  All rights reserved.
SQL> conn system/abc123456
Connected.

SQL>@/u01/oracle/product/11.2.0/sqlplus/admin/pupbld.sql
.....
.....

1、conn username/password@servicename   //连接某实例

oracle@prd:/home/oracle/impdir$sqlplus /nolog
SQL*Plus: Release 11.2.0.4.0 Production on Mon Mar 21 00:14:52 2022
Copyright (c) 1982, 2013, Oracle.  All rights reserved.
SQL> conn sh3/ab123@fp
Connected.
//这里fp是servicename 

  SQL> conn sh3/abc123@fp3  //我故意把fp写错，注意fp就是在tnsnames.ora里面设置的
  ERROR:
  ORA-12154: TNS:could not resolve the connect identifier specified

  Warning: You are no longer connected to ORACLE.

2、conn system/Shfpbi    //连接某账户

oracle@prd:/home/oracle/impdir$sqlplus /nolog
SQL*Plus: Release 11.2.0.4.0 Production on Mon Mar 21 00:14:52 2022
Copyright (c) 1982, 2013, Oracle.  All rights reserved.
SQL> conn shfpfpmai/Shfpbi12@fpmai
Connected.
SQL> conn sh3/abc123@fpmai2
ERROR:
ORA-12154: TNS:could not resolve the connect identifier specified
Warning: You are no longer connected to ORACLE.

3、导入导出

 expdp sh3/abc123  dumpfile=SH3.dmp directory=EXPDIR logfile=sh3export.log
 impdp sh3/abc123  dumpfile=SH3.dmp directory=IMPDIR logfile=sh3import.log

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