In a database-based History List, the column SUB_ID = 256 of the DSSCSCONTENT table means that a Report Services Document was sent to the History List. Therefore, a stream file (a file read or written sequentially) is created.
In a flat file based History List, a stream file gets created into the Inbox folder when a Report Service Document is sent to the History List. In the case of a database-based History List, when a Report Services Document is sent to the History List, the data corresponding to the Report Services Document History List gets saved in the DSSCSCONTENT table and the column SUB_ID value is defined as 256.
The DSSCSCONTENT table records which the column SUB_ID value is 256 should not be manually deleted because these records will be automatically deleted when the corresponding document History List message is deleted.
A list of the existing SUB_ID types in a DSSCSCONTENT table may be retrieved by running the following SQL statement using the Strategy DB Query Tool:
SELECT SUB_ID FROM DSSCSCONTENT GROUP BY SUB_ID;
The current SUB_ID types and its meanings are:
NOTES:
For further information about History List database tables, please, refer to the following Technical Notes:
