db_recovery_file_dest_size满导致数据库启动失败

SYS@orcl11g>startup
ORACLE instance started.
Total System Global Area  417546240 bytes
Fixed Size                  2213936 bytes
Variable Size             327157712 bytes
Database Buffers           83886080 bytes
Redo Buffers                4288512 bytes
Database mounted.
ORA-03113: end-of-file on communication channel
Process ID: 1935
Session ID: 1 Serial number: 5

SYS@orcl11g>startup mount
ORACLE instance started.
Total System Global Area  417546240 bytes
Fixed Size                  2213936 bytes
Variable Size             327157712 bytes
Database Buffers           83886080 bytes
Redo Buffers                4288512 bytes
Database mounted.
SYS@orcl11g>oradebug setmypid
Statement processed.
SYS@orcl11g>
SYS@orcl11g>
SYS@orcl11g>oradebug event 10046 trace name context forever,level 12;
Statement processed.
SYS@orcl11g>
SYS@orcl11g>
SYS@orcl11g>oradebug tracefile_name
/opt/oracle/diag/rdbms/orcl11g/orcl11g/trace/orcl11g_ora_1727.trc
SYS@orcl11g>alter database open;
alter database open
*
ERROR at line 1:
ORA-03113: end-of-file on communication channel
Process ID: 1727
Session ID: 1 Serial number: 5

ORA-19815: WARNING: db_recovery_file_dest_size of 4070572032 bytes is 100.00% used, and has 0 remaining bytes available.
************************************************************************
You have following choices to free up space from recovery area:
1. Consider changing RMAN RETENTION POLICY. If you are using Data Guard,
   then consider changing RMAN ARCHIVELOG DELETION POLICY.
2. Back up files to tertiary device such as tape using RMAN
   BACKUP RECOVERY AREA command.
3. Add disk space and increase db_recovery_file_dest_size parameter to
   reflect the new space.
4. Delete unnecessary files using RMAN DELETE command. If an operating
   system command was used to delete files, then use RMAN CROSSCHECK and
   DELETE EXPIRED commands.
************************************************************************
ORA-19809: limit exceeded for recovery files
ORA-19804: cannot reclaim 43927552 bytes disk space from 4070572032 limit
*** 2014-11-15 21:20:56.648 4132 krsh.c
ARCH: Error 19809 Creating archive log file to '/opt/oracle/flash_recovery_area/ORCL11G/archivelog/2014_11_15/o1_mf_1_52_%u_.arc'
*** 2014-11-15 21:20:56.648 2747 krsi.c
krsi_dst_fail: dest:1 err:19809 force:0 blast:1
WAIT #1: nam='log file sequential read' ela= 5 log#=0 block#=0 blocks=0 obj#=-1 tim=1416104456648722
WAIT #1: nam='Disk file operations I/O' ela= 15 FileOperation=5 fileno=0 filetype=3 obj#=-1 tim=1416104456648774
WAIT #1: nam='control file sequential read' ela= 14 file#=0 block#=1 blocks=1 obj#=-1 tim=1416104456648863
WAIT #1: nam='control file sequential read' ela= 11 file#=0 block#=15 blocks=1 obj#=-1 tim=1416104456648969
WAIT #1: nam='control file sequential read' ela= 10 file#=0 block#=17 blocks=1 obj#=-1 tim=1416104456649013
WAIT #1: nam='control file sequential read' ela= 10 file#=0 block#=22 blocks=1 obj#=-1 tim=1416104456649075
WAIT #1: nam='control file parallel write' ela= 4671 files=1 block#=21 requests=1 obj#=-1 tim=1416104456653795
WAIT #1: nam='control file parallel write' ela= 956 files=1 block#=18 requests=1 obj#=-1 tim=1416104456654862
WAIT #1: nam='control file parallel write' ela= 1817 files=1 block#=16 requests=1 obj#=-1 tim=1416104456656679
WAIT #1: nam='control file parallel write' ela= 1295 files=1 block#=1 requests=1 obj#=-1 tim=1416104456658021
WAIT #1: nam='control file sequential read' ela= 14 file#=0 block#=1 blocks=1 obj#=-1 tim=1416104456658082
WAIT #1: nam='control file sequential read' ela= 12 file#=0 block#=32 blocks=1 obj#=-1 tim=1416104456658162
DDE: Problem Key 'ORA 312' was flood controlled (0x1) (no incident)
ORA-00312: online log 1 thread 1: '/opt/oracle/oradata/orcl11g/redo01.log'
ORA-16038: log 1 sequence# 52 cannot be archived
ORA-19809: limit exceeded for recovery files
ORA-00312: online log 1 thread 1: '/opt/oracle/oradata/orcl11g/redo01.log'
www.zbdba.com
*** 2014-11-15 21:20:56.660
USER (ospid: 2247): terminating the instance due to error 16038

SYS@orcl11g>alter system set db_recovery_file_dest_size=8G scope=spfile;

System altered.
SYS@orcl11g>startup
ORACLE instance started.
Total System Global Area  417546240 bytes
Fixed Size                  2213936 bytes
Variable Size             327157712 bytes
Database Buffers           83886080 bytes
Redo Buffers                4288512 bytes
Database mounted.
Database opened.
SYS@orcl11g>show parameter recover
NAME                                 TYPE                   VALUE
------------------------------------ ---------------------- ------------------------------
db_recovery_file_dest                string                 /opt/oracle/flash_recovery_are
                                                            a
db_recovery_file_dest_size           big integer            8G
recovery_parallelism                 integer                0