单项选择题
Which of the following is a prerequisite for running DBMS_TDB.CHECK_DB to a successful completion？（）
A. The database must be in read-write mode.
B. The database must have no external files.
C. The database must open in read-only mode.
D. The database must be mounted but not opened.
多项选择题 Whichofthefollowingareprerequisitestepstotransportadatabase？（）
单项选择题 Whenexportingmetadataforthetransportabletablespaces，whatisthecorrectnextstepafterconfirmingendianformat？（）
多项选择题 The following query will provide what information about transportable tablespaces for the current database？（） select d.platform_name "Source"， t.platform_name "Compatible Targets"， endian_format from v$transportable_platform t， v$database d where t.endian_format = （select endian_format from v$transportable_platform t， v$database d where d.platform_name = platform_name）；