Internal Rollbacks

 
Snapshot Level
Database
Application

 
Logical Data Grouping
dbase
appl

 
Monitor Switch
Basic
Basic

Resettable 

Yes

Event Type
Database
Connection

Logical Data Grouping
db_event
conn_event

Element Name
Element Type

int_rollbacks
counter

Description:  The total number of rollbacks initiated internally by the database manager.

Usage:  An internal rollback occurs when any of the following cannot complete successfully:

• A reorganization
• An import
• A bind or pre-compile
• An application ends as a result of a deadlock situation or lock timeout situation
• An application ends without executing an explicit commit or rollback statement (on Windows).

This value represents the number of these internal rollbacks since the later of:

• The connection to the database (for database-level information, this is the time of the first connection)
• The last reset of the database monitor counters.

While this value does not include explicit SQL ROLLBACK statements, the count from "Internal Rollbacks Due To Deadlock" is included.

You can use this element to calculate the total number of units of work by calculating the sum of the following:

 
   commit statements attempted
 + internal commits
 + rollback statements attempted
 + internal rollbacks

This calculation can be done at the application or the database level.