eG Monitoring
 

Measures reported by HanaBlockTransTest

When a transaction attempts to access a database object that is already being used by another transaction, a transaction block occurs, whereby the original transaction blocks/prevents the subsequent transaction from executing on the server. If the block is not identified and released in time, then the user experience with the server will suffer! Administrators should hence be able to quickly identify blocked transactions, analyze which transactions are blocking them and why, and endeavor to clear the block quickly, so that users can continue interacting wih the server without any interruptions. This is where the HanaBlockTransTest test helps.

For every transaction type, this test reports the number of transactions of that type that are currently blocked and provides detailed diagnostics related to such transactions, so that administrators can rapidly identify the blocked transactions, accurately analyze its root-cause, and promptly remove the block.

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
blockedTransCount Indicates the number of transactions of this type that are currently blocked. Number Ideally, the value of this measure should be zero. A gradual increase in the value of this measure is a cause of concern, as it indicates a consistent rise in blocked transactions. This calls for immediate action.

The detailed diagnosis capability, if enabled lists all the blocked transactions and the users who have initiated those transactions. Using this detailed diagnosis, you can figure out the root cause of the blocking.