问题描述：Oracle异机恢复，恢复完控制文件，将数据库mount时报错，ORA-00201: control file version 11.2.0.4.0 incompatible with ORACLE version 11.2.0.0.0，如下：
RMAN>
run{
RESTORE CONTROLFILE from '/orcl_cntrol_37432_1_173132134';
alter database mount;
}

using target database control file instead of recovery catalog
...

Starting restore at 2018-03-20:09:40:33

channel ch00: restoring control file
channel ch00: restore complete,elapsed time: 00:01:36
output file name=/oracledata/orcl/control01.ctl
output file name=/oracledata/orcl/control02.ctl
output file name=/oracledata/orcl/control03.ctl
Finished restore at 2018-03-20:09:42:09

released channel: ch00
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of alter db command at 03/20/2018 09:42:09
ORA-00201: control file version 11.2.0.4.0 incompatible with ORACLE version 11.2.0.0.0
ORA-00202: control file: '/oracledata/orcl/control01.ctl'

Recovery Manager complete.

======
原因：这是因为源数据库的oracle版本和目标机不同

解决方法：由于使用的是spfile，需要先生成一个pfile，修改pfile的compatible部分，然后再由这个pfile生成新的spfile:
sql> show parameter spfile;

NAME TYPE VALUE
-------- ----------- ------------------------------
spfile string /oracle/product/11.2.0/dbs/spfileorcl.ora

sql> create pfile='/tmp/mqs20180320/orcl/initpfile.ora' from spfile;

File created.

修改 /tmp/mqs20180320/orcl/initpfile.ora 文件，将
*.compatible='11.2.0'
改为

*.compatible='11.2.0.4'

sql> shutdown immediate
sql> create spfile from pfile='/tmp/mqs20180320/orcl/initpfile.ora';
sql> startup nomount
sql> alter database mount;