Limitation of Oracle Timesten Database

Question

Hi,
We want to deploy the Oracle Timesten11.2 on 64bit RHEL Platform.
Total Physical RAM Size in Server is 32 GB.
There are 40 Millions rows in single subscriber table(45 Columns) in Oracle Database
We want to configure the READ-ONLY-LOCAL CACHE in Oracle Timesten for this subscriber table.
What should be the size of Oracle Timesten Database for support the above configuration.
Regards
Hitgon

Answer 1

Hi hitgon,
You can use the ttSize utility (http://docs.oracle.com/cd/E21901_01/doc/timesten.1122/e21643/util.htm#CHDEHFIE) for prediction the size.
Example: ttSize -tbl tableName -rows 40000000 your_DSN
Additionally, you can use ttComputeTabSizes function and tablesize clause for getting the actual table size
Command> call ttComputeTabSizes('emp');
Command> tablesize emp;
Sizes of GENA.EMP:
  INLINE_ALLOC_BYTES:   0
  NUM_USED_ROWS:        0
  NUM_FREE_ROWS:        0
  AVG_ROW_LEN:          Not computed
  OUT_OF_LINE_BYTES:    0
  METADATA_BYTES:       784
  TOTAL_BYTES:          784
  LAST_UPDATED:         2012-01-19 19:37:07.000000
1 table found.
Command>
Command> insert into emp values (1,sysdate,'gena', 'gena', 'gena', 1);
1 row inserted.
Command> call ttComputeTabSizes('emp');
Command> tablesize emp;
Sizes of GENA.EMP:
  INLINE_ALLOC_BYTES:   52080
  NUM_USED_ROWS:        1
  NUM_FREE_ROWS:        255
  AVG_ROW_LEN:          206
  OUT_OF_LINE_BYTES:    0
  METADATA_BYTES:       784
  TOTAL_BYTES:          52864
  LAST_UPDATED:         2012-01-19 19:37:54.000000
1 table found.
Command>Regards,
Gennady