DB2表空间管理详解

create tablespace语法树
 
 
 
>>-CREATE
--+-----------------------+---------------------------->
           +-LARGE-----------------+  
           +-REGULAR---------------+  
           | .-SYSTEM-.            |  
           '-+--------+--TEMPORARY-'  
             '-USER---'               
 
>--TABLESPACE--tablespace-name---------------------------------->
 
>--+-----------------------------------------------------------+-->
   |     .-DATABASE PARTITION GROUP-.                          |  
   '-IN--+--------------------------+--db-partition-group-name-'  
 
>--+--------------------------+--------------------------------->
   '-PAGESIZE--integer--+---+-'  
                       '-K-'    
 
   .-MANAGED BY--AUTOMATIC STORAGE--| size-attributes |---------------------.  
>--+------------------------------------------------------------------------+-->
   '-MANAGED BY--+-SYSTEM--| system-containers |--------------------------+-'  
                 '-DATABASE--| database-containers |--| size-attributes |-'    
 
>--+---------------------------------+-------------------------->
   '-EXTENTSIZE--+-number-of-pages-+-'  
                 '-integer--+-K-+--'    
                            '-M-'       
 
>--+-----------------------------------+------------------------>
   '-PREFETCHSIZE--+-AUTOMATIC-------+-'  
                   +-number-of-pages-+    
                   '-integer--+-K-+--'    
                              +-M-+       
                              '-G-'       
 
>--+-----------------------------+------------------------------>
   '-BUFFERPOOL--bufferpool-name-'  
 
>--+----------------------------------+------------------------->
   '-OVERHEAD--number-of-milliseconds-'  
 
>--+------------------------+----------------------------------->
   +-NO FILE SYSTEM CACHING-+  
   '-FILE SYSTEM CACHING----'  
 
>--+--------------------------------------+--------------------->
   '-TRANSFERRATE--number-of-milliseconds-'  
 
>--+---------------------------------+-------------------------><
   '-DROPPED TABLE RECOVERY--+-ON--+-'  
                             '-OFF-'    
size-attributes
 
|--+---------------------+--+-----------------------------+----->
   '-AUTORESIZE--+-NO--+-'  '-INITIALSIZE--integer--+-K-+-'  
                 '-YES-'                            +-M-+    
                                                    '-G-'    
 
>--+------------------------------------+----------------------->
   '-INCREASESIZE--integer--+-PERCENT-+-'  
                            '-+-K-+---'    
                              +-M-+        
                              '-G-'        
 
>--+-----------------------------+------------------------------|
   '-MAXSIZE--+-integer--+-K-+-+-'  
              |          +-M-+ |    
              |          '-G-' |    
              '-NONE-----------'    
 
system-containers
   .----------------------------------------------------------------------.  
   |           .-,------------------.                                     |  
   V           V                    |                     &n