Oracle数据库中,( )命令用于建立文本式的备份控制文件。
AALTER DATABASE BACKUP CONTROLFILE TO TRACE
BALTER DATABASE BACKUP CONTROLFILE TO BACKUP
CALTER DATABASE BACKUP CONTROLFILE TO ‘filename’
DALTER DATABASE BACKUP CONTROLFILE TO TEXT ‘filename’
AALTER DATABASE BACKUP CONTROLFILE TO TRACE
BALTER DATABASE BACKUP CONTROLFILE TO BACKUP
CALTER DATABASE BACKUP CONTROLFILE TO ‘filename’
DALTER DATABASE BACKUP CONTROLFILE TO TEXT ‘filename’