RAC某节点启动遭遇ORA-01105，ORA-01606

SQL> startup mount;
ORACLE instance started.

Total System Global Area 9.4869E+10 bytes
Fixed Size                  2264056 bytes
Variable Size            5.0197E+10 bytes
Database Buffers         4.4560E+10 bytes
Redo Buffers              109174784 bytes
ORA-01105: mount is incompatible with mounts by other instances
ORA-01606: parameter not identical to that of another mounted instance

$ oerr ora 1105
01105, 00000, "mount is incompatible with mounts by other instances"
// *Cause:  An attempt to mount the database discovered that another instance
//         mounted a database by the same name, but the mount is not
//         compatible. Additional errors are reported explaining why.
// *Action: See accompanying errors.

$ oerr ora 1606
01606, 00000, "parameter not identical to that of another mounted instance"
// *Cause:  A parameter was different on two instances.
// *Action: Modify the initialization parameter and restart.

set linesize 333
col name for a35
col description for a66
col value for a30
SELECT   i.ksppinm name,  
   i.ksppdesc description,  
   CV.ksppstvl VALUE
FROM   sys.x$ksppi i, sys.x$ksppcv CV  
   WHERE   i.inst_id = USERENV ('Instance')  
   AND CV.inst_id = USERENV ('Instance')  
   AND i.indx = CV.indx  
   AND i.ksppinm LIKE '/_gc%' ESCAPE '/'  
ORDER BY   REPLACE (i.ksppinm, '_', '');  

--节点1：
_gc_policy_time                     how often to make object policy decisions in minutes               0
_gc_read_mostly_flush_check         if TRUE, optimize flushes for read mostly objects                  FALSE
_gc_read_mostly_locking             if TRUE, enable read-mostly locking                                FALSE

--节点2：
_gc_policy_time                     how often to make object policy decisions in minutes               10
_gc_read_mostly_flush_check         if TRUE, optimize flushes for read mostly objects                  FALSE
_gc_read_mostly_locking             if TRUE, enable read-mostly locking                                TRUE

alter system set "_gc_read_mostly_locking"=true scope=spfile sid='*';
alter system set "_gc_policy_time"=10 scope=spfile sid='*';
--正常关闭节点1：
shutdown immediate;
--正常启动节点1：
startup

SQL> alter system set "_gc_read_mostly_locking"=true scope=spfile sid='*';

System altered.

SQL> alter system set "_gc_policy_time"=10 scope=spfile sid='*';

System altered.

SQL> shutdown immediate;
ORA-01507: database not mounted


ORACLE instance shut down.
SQL> startup
ORACLE instance started.

Total System Global Area 9.4869E+10 bytes
Fixed Size                  2264056 bytes
Variable Size            5.1271E+10 bytes
Database Buffers         4.3487E+10 bytes
Redo Buffers              109174784 bytes
Database mounted.
Database opened.