EXPDP导出时报错ORA-12154

一、问题描述
    做数据迁移时报错ORA-12154

 [oracle@qianzhi ~]$ expdp zrd/zrd@qianz directory=DATA_PUMP_DIR dumpfile=20180314TJJbak.dmp logfile=20180314TJJbak.log schemas=TJJ

 Export: Release 11.2.0.4.0 - Production on Wed Mar 14 10:28:55 2018

 Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.

 UDE-12154: operation generated ORACLE error 12154
 ORA-12154: TNS:could not resolve the connect identifier specified
 --字符串没错，tns文件也没问题

二、检查语句后发现是没写IP地址
三、解决方案
    将数据泵导出语句写完整

 [oracle@qianzhi admin]$ expdp zrd/zrd@172.16.69.30/qianz directory=DATA_PUMP_DIR dumpfile=20180314TJJbak.dmp logfile=20180314TJJbak.log schemas=TJJ;

 Export: Release 11.2.0.4.0 - Production on Wed Mar 14 10:32:39 2018

 Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.

 Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
 With the Partitioning, OLAP, Data Mining and Real Application Testing options
 FLASHBACK automatically enabled to preserve database integrity.
 Starting "ZRD"."SYS_EXPORT_SCHEMA_01": zrd

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