dg备库mount报ORA-07217
在一次搭建dg过程中,备库无法mount,报ORA-07217: sltln: environment variable cannot be evaluated.错误

[oracle@localhost orcl]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.4.0 Production on Wed Feb 13 22:27:31 2019
Copyright (c) 1982, 2013, Oracle.  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
SQL> alter database mount;
alter database mount
*
ERROR at line 1:
ORA-07217: sltln: environment variable cannot be evaluated.

alert日志报错

Set as converted control file due to db_unique_name mismatch
Changing di2dbun from ORCL to ORCLDG
ORA-7217 signalled during: alter database mount...
Wed Feb 13 20:33:41 2019
alter database mount
ORA-7217 signalled during: alter database mount...
Wed Feb 13 20:36:11 2019
alter database mount
ORA-7217 signalled during: alter database mount...

根据mos排查
根据mos ORA-07217: sltln: environment variable cannot be evaluated (Doc ID 2487898.1)描述排查,确认不是该问题

SQL> show parameter diag;
NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
diagnostic_dest                      string      /u01/app/oracle
[oracle@dg:/opt/app/oracle/arch]$env|grep ORA
ORACLE_SID=orcl
ORACLE_BASE=/opt/app/oracle
ORACLE_TERM=xterm
ORACLE_HOME=/opt/app/oracle/product/11.2.0/db_1

检查发现数据文件异常

SQL> select name from v$datafile where name like '%$%';
NAME
------------------------------------------------------
+DATA/orcl/datafile/ts_his$emr01
+DATA/orcl/datafile/ts_his$emr02

通过分析,注释掉db_file_name_convert=’+DATA/orcl/datafile/’,’/u01/app/oradata/orcl/’即可正常mount成功,数据文件命令一定要规范(不要有特殊符号),不然给后人和自己留下巨坑