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Scenario 4: Sizing the Tracking Database for all Messages

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If you had all three message scenarios present in a Microsoft® BizTalk Server® 2004 implementation, you would need to add together all of the scenario results to determine the size of the BizTalk Tracking database.

From the examples shown above:

Scenario Space required, per year, in GB
Simple messages 4.78
Messages in orchestrations 7.18
Messages in orchestrations sent out to distribution lists 10.8
Total 22.04

In addition, if we turn on message body tracking for all three scenarios, we would get the following results:

Scenario Space required, per year, in GB
Simple messages 50.1
Messages in orchestrations 50.1
Messages in orchestrations sent out to distribution lists 83.45
Total 183.65

This would give you a grand total of 205.69 GB per year growth on the BizTalk Tracking database. This figure does not include any contingency. If you decided to add a contingency of 10 percent to this total, as is recommended, then you should plan on the BizTalk Tracking database growing 227.94 GB per year. On top of this, you should consider the overhead due to SQL indices, storage, etc. You should base your multiplying factor after running the test scenarios in test if possible.

Other factors affecting BizTalk Tracking database size

There are other items, such as the shapes used within an orchestration that also affect the size of the BizTalk Tracking database.

If the orchestration debugger option is turned on, which it is by default, the status of each shape in the orchestration is saved to the BizTalk Tracking database.

The formula to determine the size needed to track shape status is:

[(# of object shapes ] * 76 bytes

For example, in the following figure, you would use the following formula to determine the BizTalk Tracking size:

((4) * 76 bytes = 304 bytes

Orchestration Example

If we assume that this orchestration processes 3.5 million messages, the additional space needed to track this orchestration would be:

304 bytes * 3,500,000/1024/1024 = 1015 MB ~ 0.99 GB.

You will need to account for each orchestration that has the orchestration debugger set to "on" to get an approximate size for the BizTalk Tracking database.

See Also

Using Message Variables to Size the Tracking Database
Sizing the Tracking Database to Track Message Bodies
Scenario 1: Sizing the Tracking Database for Simple BizTalk Messages
Scenario 2: Sizing the Tracking Database for Messages in Orchestrations
Scenario 3: Sizing the Tracking Database for Messages Sent Out to Distribution Lists