Enabling and Disabling SC930
After the trace directory is set, SC930 tracing can be enabled.
SC930 tracing can be enabled on a per-server basis, as follows:
To enable SC930 tracing
SET TRACE POINT SC930 1\p\g
To disable SC930 tracing
SET TRACE POINT SC930 0\p\g
Enable SC930 Tracing
Tracing can be enabled by setting trace point SC930 with parameter 1, 2, 3, 4 or 5, as follows:
SET TRACE POINT SC930 N [n]
where N and n are:
1
Enables query tracing for the current database.
2 [n]
Enables query tracing and provides QEPs for each query. The optional n parameter sets the QEP style where 1= segmented and 2 = full. If tracing is enabled for a single database then this does not change the scope of tracing; it simply turns on QEP output.
3 n
Enables query tracing and sets the number of segments of blob values to output, where 0 is all. This value defaults to 16. If tracing is already set to this level, this command simply changes the style of the output.
4 [n]
Enables query tracing for database n, where n is the ID number (db_id) of the database.
If n is not specified, then tracing is enabled for the current database. If n=0 and tracing is on, it reverts to all databases.
5 [n]
Enables query tracing for all databases except for database n, where n is the ID number (db_id) of the database.
If n is not specified, then tracing is excluded for the current database. If n=0 and tracing is on, it reverts to all databases.
The database ID (db_id) can be found by selecting from the iidatabase table in iidbdb or by viewing the summary information in the infodb output. (The ID is in hexadecimal and must be converted to decimal before using it on the SET TRACE POINT command).
Disable SC930 Tracing
To disable SC930 tracing
Issue either:
SET TRACE POINT SC930 0
or
SET NOTRACE POINT SC930
Recording is stopped for the DBMS Server.