ALTER SNAPSHOT LOG
ALTER SNAPSHOT LOG ON [schema
.]table_name
[PCTFREEinteger
] [PCTUSEDinteger
] [INITRANSinteger
] [MAXTRANSinteger
] [STORAGE ( [NEXTinteger
[K | M] ] [MAXEXTENTS {integer
| UNLIMITED} ] [PCTINCREASEinteger
] [FREELISTSinteger
] [FREELIST GROUPSinteger
] ] ) ]
Changes the storage characteristics of a snapshot log (table_name).
Specifies the percentage of space to be reserved in each data block for future updates to rows contained in that block. Valid values are - 99, and the default value is 10.
Specifies the minimum percentage of space that will be maintained as used in each data block. Valid values are 1- 99, and the default value is 40.
Specifies the initial number of transaction entries allocated to each block.
Specifies the maximum number of transaction entries allocated to each block.
Specifies the physical characteristics of the snapshot log as follows:
Specifies the size of the next extent in bytes, kilobytes, or megabytes. If the value is not a multiple of the database blocksize, it will be rounded up to a multiple of the database blocksize.
Specifies the maximum number of extents that may be allocated for this snapshot log. The default will vary according to the database blocksize. Specify UNLIMITED for unlimited expansion.
Specifies the percentage by which each extent will grow over the previous extent. The default is 50, which means that each extent will be one-and-one-half times larger than the previous extent.
Specifies the number of free lists contained in each freelist group in this snapshot log. The default is 1, and the maximum depends on the database blocksize.
Specifies the number of groups of free lists for this snapshot log. The default is 1. This parameter should be used only with the Parallel Server option running in parallel mode.