【DG】搭建DG时，报错：ORA-01017: invalid username/password; logon denied
今天网友也碰到了adg中搭建，ORA-01017: invalid username/password; logon denied的报错，小麦苗远程处理了一下，总结：
- listener.ora 监听配置
- tnsnames.ora 配置问题
- 参数service_names的配置问题
- 密码问题
- 必须显式地指定密码
若有类似的问题，可以从这几个方面去排查。
主库为rac，备库为rac，主备端版本为11.2.0.4.0：
[ZFLHRDBDB1:oracle]:/oracle/app/oracle/product/11.2.0/db/dbs> rman target sys/lhr@TNS_DGPRI auxiliary sys/lhr@TNS_DGPHY
Recovery Manager: Release 11.2.0.1.0 - Production on Thu Feb 18 11:30:10 2016
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
connected to target database: TESTDG (DBID=2836886746)
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00554: initialization of internal recovery manager package failed
RMAN-04006: error from auxiliary database: ORA-01017: invalid username/password; logon denied
C:\Users\hdzyat>rman target sys/lhr@22.188.194.31/TESTDG auxiliary sys/lhr@22.188.194.64/TESTDG
Recovery Manager: Release 11.2.0.1.0 - Production on Thu Feb 18 11:30:10 2016
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
connected to target database: TESTDG (DBID=2836886746)
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00554: initialization of internal recovery manager package failed
RMAN-04006: error from auxiliary database: ORA-01017: invalid username/password; logon denied
C:\Users\hdzyat>sqlplus sys/lhr@22.188.194.64/TESTDG as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on Thu Feb 18 11:30:37 2016
Copyright (c) 1982, 2010, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters, OLAP, Data Mining
and Real Application Testing options
C:\Users\hdzyat>rman target sys/lhr@22.188.194.64/TESTDG
Recovery Manager: Release 11.2.0.1.0 - Production on Thu Feb 18 12:47:27 2016
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00554: initialization of internal recovery manager package failed
RMAN-04005: error from target database:
ORA-01017: invalid username/password; logon denied
【RMAN】使用RMAN的Duplicate功能创建物理DataGuard报错（ORA-17627、ORA-17629）处理
这是一个“貌似简单，实则不然”的报错排查处理过程。不要被表面现象所蒙蔽。
在使用RMAN的Active Database Duplicate创建物理DataGuard是抛出ORA-17627和ORA-17629错误，RMAN环境下的详细报错信息如下：
ORA-17627: ORA-01017: invalid username/password; logon denied
ORA-17629: Cannot connect to the remote database server
千万不要以为是由于输入了错误的用户名和密码导致的，而是因为“没有输入用户名和密码”。且看我的分解。
1.数据库版本信息
SYS@PROD> select * from v$version;
BANNER
----------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
PL/SQL Release 11.2.0.1.0 - Production
CORE 11.2.0.1.0 Production
TNS for Linux: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production
2.再现问题现象
1）创建物理备库的RMAN脚本如下
注意此脚本本身不存在任何问题。
duplicate target database
for standby
from active database
DORECOVER
spfile
set db_unique_name='SBDB'
set log_archive_dest_1='location=/u01/app/oracle/arch/SBDB'
set log_archive_dest_2='service=PROD async lgwr register valid_for=(online_logfile,primary_role) db_unique_name=PROD'
set standby_file_management='AUTO'
set fal_server='PROD'
set fal_client='SBDB'
set control_files='/u01/app/oracle/oradata/SBDB/control1.ctl','/u01/app/oracle/oradata/SBDB/control2.ctl'
set db_file_name_convert='PROD','SBDB'
set log_file_name_convert='PROD','SBDB'
set memory_target='0'
set sga_target='400M';
2）确认当前ORACLE_SID内容
PROD@secdb /home/oracle$ echo $ORACLE_SID
PROD
3）连接到AUXILIARY辅助实例创建物理备库
PROD@secdb /home/oracle$ rman target / auxiliary sys/oracle@sbdb
Recovery Manager: Release 11.2.0.1.0 - Production on Wed Apr 25 20:36:53 2012
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
connected to target database: PROD (DBID=193323522)
connected to auxiliary database: PROD (not mounted)
RMAN>
RMAN> duplicate target database
2> for standby
from active database
3> 4> DORECOVER
5> spfile
6> set db_unique_name='SBDB'
7> set log_archive_dest_1='location=/u01/app/oracle/arch/SBDB'
8> set log_archive_dest_2='service=PROD async lgwr register valid_for=(online_logfile ,primary_role) db_unique_name=PROD'
set standby_file_management='AUTO'
9> 10> set fal_server='PROD'
11> set fal_client='SBDB'
set control_files='/u01/app/oracle/oradata/SBDB/control1.ctl','/u01/app/oracle/oradat a/SBDB/control2.ctl'
12> 13> set db_file_name_convert='PROD','SBDB'
14> set log_file_name_convert='PROD','SBDB'
set memory_target='0'
15> 16> set sga_target='400M';
Starting Duplicate Db at 20120425 20:37:26
using target database control file instead of recovery catalog
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=135 device type=DISK
contents of Memory Script.:
{
backup as copy reuse
targetfile '/u01/app/oracle/product/11.2.0/db_1/dbs/orapwPROD' auxiliary format
'/u01/app/oracle/product/11.2.0/db_1/dbs/orapwSBDB' targetfile
'/u01/app/oracle/product/11.2.0/db_1/dbs/spfilePROD.ora' auxiliary format
'/u01/app/oracle/product/11.2.0/db_1/dbs/spfileSBDB.ora' ;
sql clone "alter system set spfile= ''/u01/app/oracle/product/11.2.0/db_1/dbs/spfi leSBDB.ora''";
}
executing Memory Script
Starting backup at 20120425 20:37:27
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=196 device type=DISK
RMAN-03009: failure of backup command on ORA_DISK_1 channel at 04/25/2012 20:37:28
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
continuing other job steps, job failed will not be re-run
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of Duplicate Db command at 04/25/2012 20:37:29
RMAN-03015: error occurred in stored script. Memory Script
RMAN-03009: failure of backup command on ORA_DISK_1 channel at 04/25/2012 20:37:29
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
RMAN> exit
Recovery Manager complete.
4）RMAN运行过程中报错信息内容
RMAN-03009: failure of backup command on ORA_DISK_1 channel at 04/25/2012 20:37:28
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
continuing other job steps, job failed will not be re-run
3.问题原因
报错信息的确够直白：“无效的用户名/密码，禁止登陆”。
这种报错，直接定格到登陆的那一瞬间，命令如下：
PROD@secdb /home/oracle$ rman target / auxiliary sys/oracle@sbdb
正常理解的，这里貌似没有问题，前一部分“target /”表明使用操作系统认证的方式登录PROD数据库实例，后一半部分“auxiliary sys/oracle@sbdb”表明使用密码文件方式进行验证。并且，命令行提示信息上显示也已经成功登陆。因此这个报错信息很是诡异。
如果继续对比这两部分的登录方式，问题最有可能出现在前一部分，因为使用的是默认行为方式；另外后半部分是天衣无缝的。最终的原因的确出在这里，在使用Oracle的Active Database Duplicate功能创建物理DataGuard的过程中，连接target数据库必须“显式地指定密码”，即使是使用操作系统认证方式登录。
4.问题处理
原因找到后，处理本身就是水到渠成的事情。
正确的连接方式如下：
$ rman target sys/oracle@prod auxiliary sys/oracle@sbdb
OK，到此问题便完美的处理完毕了，直接执行后续的RMAN命令即可。
5.小结
这个问题处理过程告诉我们DBA一个道理，不要被表面现象所蒙蔽，有些提示信息是直白可信的，但是有些提示信息需要我们冷静的思考多种可能的原因，然后再一一尝试排查，必将有柳暗花明之日。
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