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单选题
Which of the following statements is true when the database is in ARCHIVELOG mode and tablespaces are in hot backup mode？（）
A
Archive log generation is suspended until the tablespaces are taken out of hot backup mode.
B
Datafiles are not written to during hot backups.
C
Changes to the database are cached during the backup and not written to the datafiles to ensure that the datafiles are consistent when recovered.
D
The datafile headers are not updated during the backup.
E
The way data is written to the online redo logs is unchanged during the backup.
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更多 “单选题Which of the following statements is true when the database is in ARCHIVELOG mode and tablespaces are in hot backup mode？（）A Archive log generation is suspended until the tablespaces are taken out of hot backup mode. B Datafiles are not written to during hot backups.C Changes to the database are cached during the backup and not written to the datafiles to ensure that the datafiles are consistent when recovered.D The datafile headers are not updated during the backup.E The way data is written to the online redo logs is unchanged during the backup.” 相关考题
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Which two statements are true regarding the starting of the database instance using the following command?()SQLSTARTUP UPGRADE
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Which two statements are true about the Automatic Diagnostic Repository (ADR)?() (Choose two.)
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You Execute the Following command to create a password file in the database server:$ orapwd file = ‘+DATA/PROD/orapwprod entries = 5 ignorecase = N format = 12’Which two statements are true about the password file?（）A. It records the usernames and passwords of users when granted the DBA role.B. It contains the usernames and passwords of users for whom auditing is enabled.C. Is used by Oracle to authenticate users for remote database administration.D. It records the usernames and passwords of all users when they are added to the OSDBA or OSOPER operating system groups.E. It supports the SYSBACKUP, SYSDG, and SYSKM system privileges.
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Which two statements are true regarding the starting of the database instance using the following command?（） SQLSTARTUP UPGRADEA、It enables all system triggers.B、It allows only SYSDBA connections.C、It ensures that all job queues remain active during the upgrade process.D、It sets system initialization parameters to specific values that are required to enable database upgrade scripts to be run.
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考题
Which of the following statements is true when the database is in ARCHIVELOG mode and tablespaces are in hot backup mode？（）A、 Archive log generation is suspended until the tablespaces are taken out of hot backup mode. B、 Datafiles are not written to during hot backups.C、 Changes to the database are cached during the backup and not written to the datafiles to ensure that the datafiles are consistent when recovered.D、 The datafile headers are not updated during the backup.E、 The way data is written to the online redo logs is unchanged during the backup.
考题
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考题
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考题
单选题Which of the following statements is true when the database is in ARCHIVELOG mode and tablespaces are in hot backup mode？（）A
Archive log generation is suspended until the tablespaces are taken out of hot backup mode. B
Datafiles are not written to during hot backups.C
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The datafile headers are not updated during the backup.E
The way data is written to the online redo logs is unchanged during the backup.
考题
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考题
多选题Which three statements are true about database recovery operations？（）ADamaged or lost data files are restored from backups.BRedo log file entries are used to roll forward the database.CUndo segments are used to roll back any uncommitted transactions.DTransactions that were active when the failure occurred are restarted.ETransactions that were active when the failure occurred are automatically committed during the recover procedure.
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考题
单选题Which of the following commands cannot be executed when the database open？（）A
RECOVER DATABASEB
RECOVER TABLESPACEC
RECOVER DATAFILED
ALTER DATABASE RECOVER DATAFILE
考题
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考题
单选题Which of the following statements is true concerning carbon dioxide when used as a fire extinguishing agent?（）A
Carbon dioxide is corrosive when exposed to fireB
Carbon dioxide should be applied slowly to a large engine room fireC
Its total cooling effect is far greater than waterD
Its smothering effect is excellent for class B fires
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