551.Which command will result in a trace file being created with the create controlfile command contained in it?
A. alter database backup controlfile;
B. alter database backup controlfile to trace;
C. alter database controlfile backup;
D. alter database controlfile backup to '/ora01/oracle/ctrl_backup.ctl';
E. alter database begin controlfile backup;
Answer: B
CDE无此语法，A生成的是二进制文件，B生成TRACE文件。来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/81227/viewspace-2122776/ ，如需转载，请注明出处，否则将追究法律责任。
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