Orale 12c DataGuard环境中备库出现Resize operation completed for file# 现象
数据库版本

[oracle@ray01 ~]$ opatch lspatches
22291127;Database Patch Set Update : 12.1.0.2.160419 (22291127)

OPatch succeeded.

SQL> select * from v$version;

BANNER                                                                               CON_ID
-------------------------------------------------------------------------------- ----------
Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production              0
PL/SQL Release 12.1.0.2.0 - Production                                                    0
CORE    12.1.0.2.0      Production                                                        0
TNS for Linux: Version 12.1.0.2.0 - Production                                            0
NLSRTL Version 12.1.0.2.0 - Production                                                    0

alert日志提示

Mon Jun 27 20:56:37 2016
Resize operation completed for file# 18, old size 25600000K, new size 30720000K
Mon Jun 27 20:56:56 2016
Archived Log entry 210 added for thread 1 sequence 286 rlc 915405135 ID 0x2316988c dest 2:
Mon Jun 27 20:57:01 2016
Primary database is in MAXIMUM PERFORMANCE mode
RFS[211]: Assigned to RFS process (PID:22867)
RFS[211]: Selected log 11 for thread 1 sequence 287 dbid 588725388 branch 915405135
Mon Jun 27 20:57:14 2016
Resize operation completed for file# 17, old size 25600000K, new size 30720000K
Mon Jun 27 07:57:15 2016
Archived Log entry 211 added for thread 1 sequence 287 ID 0x2316988c dest 1:
Mon Jun 27 20:57:15 2016
Resize operation completed for file# 3, old size 972800K, new size 983040K
Mon Jun 27 20:57:15 2016
Primary database is in MAXIMUM PERFORMANCE mode
RFS[212]: Assigned to RFS process (PID:22873)
RFS[212]: Selected log 11 for thread 1 sequence 288 dbid 588725388 branch 915405135
Mon Jun 27 20:57:15 2016
Resize operation completed for file# 3, old size 983040K, new size 1024000K
Resize operation completed for file# 3, old size 1024000K, new size 1034240K
Mon Jun 27 20:57:54 2016
Resize operation completed for file# 15, old size 25600000K, new size 30720000K
Mon Jun 27 20:58:15 2016
Resize operation completed for file# 18, old size 30720000K, new size 33554416K
Mon Jun 27 20:58:34 2016
Resize operation completed for file# 17, old size 30720000K, new size 33554416K
Mon Jun 27 20:58:54 2016
Resize operation completed for file# 15, old size 30720000K, new size 33554416K

大量Resize operation completed for file# 操作记录,给人感觉比较烦,根据多年使用oracle的经验,这种现象很可能有隐含参数或者event屏蔽,隐含参数可以猜测到,event需要查询官方资料.

查询汗resize的隐含参数

SQL> col name for a52
SQL> col value for a24
SQL> col description for a50
set linesize 150
select a.ksppinm name,b.ksppstvl value,a.ksppdesc description
  from x$ksppi a,x$ksppcv b
 where a.inst_id = USERENV ('Instance')
   and b.inst_id = USERENV ('Instance')
   and a.indx = b.indx
SQL> SQL>   2    3    4    5    6     and upper(a.ksppinm) LIKE upper('%&param%')
  7  order by name
/
  8  Enter value for param: resize
old   6:    and upper(a.ksppinm) LIKE upper('%&param%')
new   6:    and upper(a.ksppinm) LIKE upper('%resize%')

NAME                                                 VALUE                    DESCRIPTION
---------------------------------------------------- ------------------------ --------------------------------------------------
_asm_skip_resize_check                               FALSE                    skip the checking of the clients for s/w compatibi
                                                                              lity for resize

_bct_public_dba_buffer_dynresize                     2                        allow dynamic resizing of public dba buffers, zero
                                                                               to disable

_disable_file_resize_logging                         FALSE                    disable file resize logging to alert log

从这里可以发现_disable_file_resize_logging参数默认值为false,表示显示文件resize的提示,设置为true应该就可以解决该问题.