Which of the following commands cannot be executed in the bootstrap mode?
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RENAME
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ENCRYPT_PASSWORD
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IMPORT
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REM
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GRANT_USER
In bootstrap mode, RENAME command cannot be executed because it requires the database to be fully operational with proper metadata handling. Bootstrap mode is for initial database setup with limited functionality. Commands like ENCRYPT_PASSWORD, IMPORT, REM, and GRANT_USER are available in bootstrap mode.
Bootstrap mode is a restricted startup mode used mainly for connecting as SYSDBA to issue low-level commands such as STARTUP, RECOVER, and CREATE DATABASE before the full instance and data dictionary are available. RENAME (which operates on data dictionary objects) requires the normal database environment to be up and isn't supported while running in this restricted bootstrap mode.