Oracle Materialized View Log Editor - Physical Props Tab
Use the Physical Props tab to select physical properties for the materialized view log such as tablespace, extents, space usage, and free lists. The following describes the options available for this tab:
- TABLESPACE
-
Select a tablespace from the drop-down list. Click the
button to open the Tablespace Editor to edit any properties for the selected tablespace.
- Extents
-
Enter a value in the following options for Extents:
- INITIAL
-
Specifies in bytes the size of the object's first extent. Also select a value from the drop-down.
- NEXT
-
Specify in bytes the size of the next extent to allocate to the object. Also select a value from the drop-down.
- PCTINCREASE
-
Specify the percent by which the third and subsequent extents grow over the preceding extent.
- MINEXTENTS
-
Specify the total number of extents to allocate when the object is created.
- Maxextents
-
Specify the total number of extents, including the first, that Oracle can allocate for the object. If you select this check box for Maxextents, then select one of the following options:
- UNLIMITED
- VALUE If you select this option, enter a value in the text box.
- Space Usage
-
Enter a value in the following options for Space Usage:
- PCTFREE
-
Specify the limit Oracle should use to determine when additional rows can be added. The value of this parameter is expressed as a whole number and interpreted as a percentage.
- PCTUSED
-
Specify the space to be reserved for each data block for future expansion. The value of this parameter is expressed as a whole number and interpreted as a percentage.
- Buffer pool
-
Select this check box if you want to specify a default buffer pool. If you select this check box, then select one of the following options:
- KEEP
-
Puts blocks from the segment into the KEEP buffer pool.
- RECYCLE
-
Puts blocks from the segment into the RECYCLE buffer pool.
- DEFAULT
-
Specify DEFAULT to indicate the default buffer pool.
- Number Transactions
-
Enter a value for the following option:
- INITRANS
-
Specifies the initial number of concurrent update transactions allocated for data blocks.
- Freelists
-
Enter a value for the following options:
- FREELISTS
-
For objects other than tablespaces, specify the number of free lists for each of the free list groups for the table, partition, cluster, or index.
- FREE GROUPS
-
Specify the number of groups of free lists for the database object you are creating.
- Redo log
-
If you select this check box, then select one of the following options:
- LOGGING
- NO LOGGING
Note: For more information on these parameters, see your vendor's SQL documentation.
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