TRACELEVEL

Produces a statistical analysis of application behavior by tracing certain operations in native applications. The report produced by this directive provides better readability and is inherently more useful than a traditional ODBC trace.

The statistical analysis information is written to a logfile named OpenESQLTrace.processID.log, which is created the first time you use TRACELEVEL. With each subsequent use of TRACELEVEL, tracing information is appended to the end of the file. A separator record is written at the end of each trace to help identify different traces.

OpenESQL creates the logfiles under the directory where the application is located. If file/directory permissions prevent file creation in that location, OpenESQL creates the logfiles under the directory referenced in the %TEMP% environment variable.

All trace records contain the elapsed runtime, accurate to one microsecond.

Syntax:

TRACELEVEL={T | 1 | 2 | 3 | 4 | D}

Scope:

Used at compile time:	No
Behavior at run time:	Source file

See Scope - OpenESQL SQL Compiler Directive Options for more information.

Comments:

When TRACELEVEL=T, the following information is written to the trace file:
- BEGIN - traces main SQL directives
- END - indicates end of run
- DIRECTIVES - traces per compilation unit directives the firs ttime acompilation unit is enountered at run time.
When TRACELEVEL=1, the following information is written to the trace file in addition to the information written when you speficy TRACELEVEL=T:
- PREPARE - identifies the original source code when a statement is prepared.
- DISPOSE - provides summary information for overall statement usage when a statement is removed from the prepared statement cache at disconnect time
- FLUSH - provides summary information for overall statement usage when a statement is flushed from the cache usually due to a cache overflow
When TRACELEVEL=2, the following information is written to the trace file in addition to the information written when you specify TRACELEVEL=1:
- OPEN
- EXECUTE - provides the number of rows selected, inserted, or updated
- EXEC_IMMED EXECUTE - provides the number of rows selected, inserted, or updated
- ODBCCLOSE - provides summary information for the current cursor use
- STMT_CHANGED - reports new concurrency and scroll option settings when the ODBC driver uses different settings than those requested by OpenESQL
When TRACELEVEL=3, the following information is written to the trace file in addition to the information written when you specify TRACELEVEL=2:
- ODBCFETCH - provides the number of rows fetched
- COBOLFETCH - provides the number of rows returned to the COBOL application
When TRACELEVEL= 4, the following information is written to the trace file in addition to the information written when you specify TRACELEVEL=3:
- EXEC_SQL_BEGIN
- EXEC_SQL_END
When TRACELEVEL=D, a reduced version of TRACELEVEL=4 is produced for debugging purposes. It contains only the following information:
- BEGIN
- END
- EXEC_SQL_BEGIN
- EXEC_SQL_END
- DIRECTIVES