同事备份遇到了一个报错，提示用户密码拒绝。经过确认用户和密码都没有问题，那可能是什么问题呢！

1、现象

@H_502_4@<roidb01:orcl:/u01/app/oracle/product/11.2.0/dbhome_1/network/admin>$ <roidb01:orcl:/u01/app/oracle/product/11.2.0/dbhome_1/network/admin>$sh rman.sh Recovery Manager: Release 11.2.0.4.0 - Production on Tue Feb 13 22:12:56 2018 Copyright (c) 1982,2011,Oracle and/or its affiliates. All rights reserved. connected to target database: ORCL (DBID=1483481154) RMAN> 2> 3> using target database control file instead of recovery catalog RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-12001: could not open channel t1 RMAN-10008: could not create channel context RMAN-10003: unable to connect to target database ORA-01017: invalid username/password; logon denied RMAN>

2、部分脚本内容

@H_502_4@<roidb01:orcl:/u01/app/oracle/product/11.2.0/dbhome_1/network/admin>$vi rman.sh $ORACLE_HOME/bin/rman target / <<EOF run{ allocate channel t1 device type disk connect 'sys/xxxx$2017_sys@orcl'; #发现这个密码里有特殊符号$ } exit EOF

3、解决方法

@H_502_4@<roidb01:orcl:/u01/app/oracle/product/11.2.0/dbhome_1/network/admin>$ <roidb01:orcl:/u01/app/oracle/product/11.2.0/dbhome_1/network/admin>$cat rman.sh $ORACLE_HOME/bin/rman target / <<EOF run{ allocate channel t1 device type disk connect 'sys/xxxx\$2017_sys@orcl'; } exit EOF

shell 脚本中特殊符号需要使用\转义处理一下。

再次执行

@H_502_4@<roidb01:orcl:/u01/app/oracle/product/11.2.0/dbhome_1/network/admin>$sh rman.sh Recovery Manager: Release 11.2.0.4.0 - Production on Tue Feb 13 22:13:20 2018 Copyright (c) 1982,Oracle and/or its affiliates. All rights reserved. connected to target database: ORCL (DBID=1483481154) RMAN> 2> 3> using target database control file instead of recovery catalog allocated channel: t1 channel t1: SID=46 device type=DISK released channel: t1 RMAN>

小结：当我们在shell脚本里执行相关命令，一定要关注特殊符号的转义问题。