Various boundary conditions for query logging.
Specifying any of the limit options can have a performance impact on your system.
For complete descriptions of these options and their option modifiers. See “Tracking Query Behavior with Database Query Logging” in Teradata Vantage™ - Database Administration, B035-1093.
- SQLTEXT= n
- Number of SQL characters to capture, where n is the number of characters from 0 through 10,000. The default is 200.
- SUMMARY =n1,n2,n3
- Requests are grouped by duration intervals or number of I/Os, each group is counted, and the count results are stored.
- You can specify up to 3 intervals and a fourth interval is created by default as anything longer than n3:
SUMMARY cannot be used with LIMIT THRESHOLD or logging options.
- 0 through n1
- n1 through n2
- n2 through n3
- greater than n3
- THRESHOLD =n
- requests that complete in n or less are counted and queries that exceed n are logged.
- n as AMP CPU time, where n represents hundredths of a second.
- n as normalized AMP CPU time, where n represents hundredths of a second.
- n as elapsed time in seconds.
- n as elapsed time, in hundredths of a second. This is the default.
- n as a count of total I/Os, where n is specified in the number of I/Os.