单选题During regular database operation, which background process will take smaller blocks of free space in a dictionary-managed tablespace and move things around to make bigger pieces of free space?（）ADBW0 BLGWR CARCH DSMON EPMON
单选题
During regular database operation, which background process will take smaller blocks of free space in a dictionary-managed tablespace and move things around to make bigger pieces of free space?（）
A
DBW0
B
LGWR
C
ARCH
D
SMON
E
PMON
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单选题Note the following functionalities of various background processes： 1. Record the checkpoint information in data file headers. 2. Perform recovery at instance startup. 3. Cleanup unused temporary segments. 4. Free the resources used by a user process when it fails. 5. Dynamically register database services with listeners. 6. Monitor sessions for idle session timeout. Which option has the correct functionalities listed for a background process（）AArchiver Process （ARCn）： 1， 2， 5BSystem Monitor Process （SMON）： 1， 4， 5CProcess Monitor Process （PMON）： 4， 5， 6DDatabase Writer Process （DBWn）： 1， 3， 4
单选题During regular database operation, which background process will take smaller blocks of free space in a dictionary-managed tablespace and move things around to make bigger pieces of free space?（）ADBW0 BLGWR CARCH DSMON EPMON
多选题Evaluate the following command and its output： SQLSELECT * FROM dba_temp_free_space； TABLESPACE_NAME TABLESPACE_SIZE ALLOCATED_SPACE FREE_SPACE LMTEMP 250609664 101048576 149561088 Which two statements correctly interpret the output？（）AFREE_SPACE indicates only the space that is currently unallocated.BALLOCATED_SPACE indicates only the space currently allocated and in use.CFREE_SPACE indicates only the space that is currently allocated and available for reuse.DALLOCATED_SPACE indicates both the space currently allocated and used，and the space that is available for reuse.EFREE_SPACE indicates both the space that is currently allocated and available for reuse，and the space that is currently unallocated.
单选题Note the following functionalities of various background processes： 1：Record the checkpoint information in data file headers. CKPT 2：Perform recovery at instance startup. SMON 3：Cleanup unused temporary segments. SMON 4：Free the resources used by a user process when it fails. 5：Dynamically register database services with listeners. 6：Monitor sessions for idle session timeout. Which option has the correct functionalities listed for a background process（）AArchiver Process （ARCn）：1， 2，5BSystem Monitor Process （SMON）：1，4，5CProcess Monitor Process （PMON）：4，5，6DDatabase Writer Process （DBWn）：1，3，4
单选题You have set Tablespace Full Metrics Threshold values for the USERS tablespace as follows： Warning （%）： 90 Critical （%）： 95 Which background process is responsible for issuing alerts when the threshold is crossed（）ASystem monitor （SMON）BProcess monitor （PMON）CMemory manager process （MMAN）DManageability Monitor process （MMON）