查看alert.log日志： 原来是磁盘空间不足

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Errors in file f:\app\administrator\diag\rdbms\brorcl\brorcl\trace\brorcl_arc3_19032.trc:
ORA-19504: failed to create file "F:\APP\ADMINISTRATOR\FLASH_RECOVERY_AREA\BRORCL\ARCHIVELOG\2015_04_15\O1_MF_1_962_%U_.ARC"
ORA-27044: unable to write the header block of file
OSD-04008: WriteFile() failure, unable to write to file
O/S-Error: (OS 112) 磁盘空间不足。
ARC3: Error 19504 Creating archive log file to 'F:\APP\ADMINISTRATOR\FLASH_RECOVERY_AREA\BRORCL\ARCHIVELOG\2015_04_15\O1_MF_1_962_%U_.ARC'
ARCH: Archival stopped, error occurred. Will continue retrying
Errors in file f:\app\administrator\diag\rdbms\brorcl\brorcl\trace\brorcl_arc3_19032.trc:
ORA-16038: log 4 sequence# 962 cannot be archived
ORA-19504: failed to create file ""
ORA-00312: online log 4 thread 1: 'F:\APP\ADMINISTRATOR\ORADATA\BRORCL\REDO004_1'
ORA-00312: online log 4 thread 1: 'F:\APP\ADMINISTRATOR\ORADATA\BRORCL\REDO004_2'
Wed Apr 15 14:51:13 2015
Thread 1 advanced to log sequence 964 (LGWR switch)
  Current log# 2 seq# 964 mem# 0: F:\APP\ADMINISTRATOR\ORADATA\BRORCL\REDO002_1
  Current log# 2 seq# 964 mem# 1: F:\APP\ADMINISTRATOR\ORADATA\BRORCL\REDO002_2
Wed Apr 15 14:51:18 2015
Errors in file f:\app\administrator\diag\rdbms\brorcl\brorcl\trace\brorcl_arc0_8412.trc:
ORA-19816: WARNING: Files may exist in db_recovery_file_dest that are not known to database.
ORA-27044: unable to write the header block of file
OSD-04008: WriteFile() failure, unable to write to file
O/S-Error: (OS 112) 磁盘空间不足。

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【报错原因】