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  • Oracle内部视图:x$targetrba

    SQL> desc x$targetrba
     Name
     -----------------------------------------
     ADDR                               N/A
    
     INDX                               N/A
    
     INST_ID                            N/A
    
     TOTALLOGSZ                         select sum(bytes)/redo_standard_size from v$log
    
     LGLOGSZ                            select bytes/512 from v$Log where status='CURRENT'
    
     CUR_EST_RCV_READS                  Number of dirty buffers in the buffer cache.
                                        In the Standard Edition, this column is always null.       
    
     ACTUAL_REDO_BLKS                   Current actual number of redo blocks required for recovery           
    
     TARGET_RBA_SEQ                     target redo block address log sequence    
    
     TARGET_RBA_BNO                     target redo block address block number
    
     TARGET_RBA_BOF                     target redo block address offset
    
     MIN_LAG                            Current target number of redo blocks that must be processed for recovery.
                                        This value is the minimum value of the following 3 columns,
                                        and identifies which of the 3 user-defined limits determines checkpointing.               
    
     LOGFILESZ                          Maximum number of redo blocks required to guarantee that a
                                        log switch does not occur before the checkpoint completes.  
    
     CT_LAG                             Number of redo blocks that need to be processed during
                                        recovery to satisfy the LOG_CHECKPOINT_TIMEOUT parameter.
                                        The value displayed is not meaningful unless that parameter has been set.
    
     CI_LAG                             Number of redo blocks that need to be processed during recovery to
                                        satisfy the LOG_CHECKPOINT_INTERVAL parameter.
                                        The value displayed is not meaningful unless that parameter has been set.
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  • 原文地址:https://www.cnblogs.com/macleanoracle/p/2967804.html
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