Duplicate Active Database 遇到 ORA-01017 invalid username/password

      Oracle 11g 的新特性Duplicate Active Database可以在不备份target database的情况下构建 duplicate database，特别适合于为VLDB构建standby的场景。今天特意试一下，但是却让我遇上了 ORA-01017 invalid username/password，过程如下：

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oracle@dev18:abank /home/oracle>rman target / auxiliary sys/__password__@abank_123   Recovery Manager: Release 11.2.0.1.0 - Production on Sun May 29 14:16:08 2011   Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.   connected to target database: abank (DBID=433589790) connected to auxiliary database: abank (not mounted)   RMAN> duplicate target database for standby from active database ;    Starting Duplicate Db at 2011-05-29 14:16:17 using target database control file instead of recovery catalog allocated channel: ORA_AUX_DISK_1 channel ORA_AUX_DISK_1: SID=1149 device type=DISK   contents of Memory Script: {    backup as copy reuse    targetfile  '/opt/app/oracle/product/11.2.0/db/dbs/orapwabank' auxiliary format  '/opt/app/oracle/product/11.2.0/db/dbs/orapwabank'   ; } executing Memory Script   Starting backup at 2011-05-29 14:16:18 allocated channel: ORA_DISK_1 channel ORA_DISK_1: SID=594 device type=DISK RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-03002: failure of Duplicate Db command at 05/29/2011 14:16:19 RMAN-03015: error occurred in stored script Memory Script RMAN-03009: failure of backup command on ORA_DISK_1 channel at 05/29/2011 14:16:19 ORA-17629: Cannot connect to the remote database server ORA-17627: ORA-01017: invalid username/password; logon denied ORA-17629: Cannot connect to the remote database server

      打开rman的时候已经进行了验证，理论上不应在有验证的问题，google得知使用Duplicate Active Database要这样登入rman：

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1	rman target sys/__password__ auxiliary sys/__password__@abank_123