By executing the status information collection command (hdestate command), you can output status information to the standard output. This information can be used to check the source Datareplicator's status. You can collect status information only while the source Datareplicator is active.

The status information includes the source Datareplicator's identifier, node information, and extraction information queue file utilization status. For details about how to collect status information, see the hdestate command (collect source Datareplicator's status information) in Chapter 7. Command Syntax.

You can collect an activity trace to obtain Datareplicator's activity status and to determine its performance. You can use an activity trace for the following purposes:

• If extraction/transmission processing seems slow, use the activity trace for guidance in changing system settings to maximize HiRDB performance (for example, for determining whether tuning should involve changing the extraction buffer size, changing the send buffer or transmission interval, or increasing the communication line capacity).
• If a send data UOC routine's performance is not satisfactory, use the activity trace to determine whether the problem is with Datareplicator or with the UOC routine.

To obtain an activity trace with the source Datareplicator, you specify the int_trc_lvl and int_trc_filesz operands in the extraction system definition. To obtain an activity trace for each back-end server, you specify the int_trc_getv operand in the extraction environment definition. To obtain an activity trace for each target system identifier, you specify the int_trc_getv operand in the transmission environment definition. Use the hdstrcedit command to output an obtained activity trace.

For details about activity trace definitions, see 5.2 Extraction system definition, 5.3 Extraction environment definition, and 5.4 Transmission environment definition; for details about the hdstrcedit command, see the hdstrcedit command in Chapter 7. Command Syntax.