Go back to 1Z0-031 - Oracle9i Database: Fundamentals I

Question :-

Question 139 Which two actions does the Checkpoint (CKPT) process initiate when a checkpoint occurs? (Choose two.)
updates the control file with the checkpoint information
updates the headers of data files if the checkpoint is caused by a log switch
signals log writer (LGWR) to write redo entries from the log buffer to the redo log files
removes all the blocks from the database buffer cache

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