When Metric's attribute CONFIG="TRUE", what does it mean exactly?

Question

I am confused with the explanation in document <Oracle Enterprise Manager Extensibility 10g Release 4 (10.2.0.4) B40007-01> , it said 'CONFIG: This is a special designation for CONFIG metrics that are uploaded
differently by the EM framework.'. I mean what is the purpose when set CONFIG="TRUE"? For example, how could I understand the code below.
<Metric NAME="MYSQL_MYSQL_DB_VAR" TYPE="RAW" CONFIG="TRUE">
<Display>
<Label NLSID="mmd_MYSQL_MYSQL_DB_VAR">MYSQL_MYSQL_DB_VAR</Label>
</Display>
<TableDescriptor TABLE_NAME="MGMT_EMX_MYSQL_DBVAR">
<ColumnDescriptor NAME="Variable_name" COLUMN_NAME="VARIABLE_NAME" TYPE="STRING" IS_KEY="TRUE" />
<ColumnDescriptor NAME="Value" COLUMN_NAME="VALUE" TYPE="STRING" IS_KEY="FALSE" />
</TableDescriptor>
<ExecutionDescriptor>
<GetTable NAME="MysqlVariables"/>
<GetView NAME="v_result" FROM_TABLE="MysqlVariables">
<Column NAME="Variable_name" COLUMN_NAME="Variable_name" TABLE_NAME="MysqlVariables" />
<Column NAME="Value" COLUMN_NAME="Value" TABLE_NAME="MysqlVariables" />
</GetView>
</ExecutionDescriptor>
</Metric>
Thanks,
Satine

Answer 1

Caroy,
Thank you for your reply!
I am a little confused right now. With your first reply, you said, CONFIG=TRUE used for configuration metrics in conjunction with the ECM framework and ECM is not supported with Management Plug-ins. I mean since EMC is not supported, then why there is an option to set CONFIG=TRUE? And besiede the way to collect data, what are the differences between configuration metrics and instance properties(both dynamic and state)?
The reason why I was wondering the metric with CONFIG=TRUE will not be displayed in EM console is becase I have a developed plug-in and metric "MYSQL_MYSQL_DB_VAR" is not appeared in EM console. The file is as below. Would you please tell me why the metric doesn't appear in EM?
target metdata file:
<Metric NAME="MYSQL_MYSQL_DB_VAR" TYPE="RAW" CONFIG="TRUE">
<Display>
<Label NLSID="mmd_MYSQL_MYSQL_DB_VAR">MYSQL_MYSQL_DB_VAR</Label>
</Display>
<TableDescriptor TABLE_NAME="MGMT_EMX_MYSQL_DBVAR">
<ColumnDescriptor NAME="Variable_name" COLUMN_NAME="VARIABLE_NAME" TYPE="STRING" IS_KEY="TRUE" />
<ColumnDescriptor NAME="Value" COLUMN_NAME="VALUE" TYPE="STRING" IS_KEY="FALSE" />
</TableDescriptor>
<ExecutionDescriptor>
<GetTable NAME="MysqlVariables"/>
<GetView NAME="v_result" FROM_TABLE="MysqlVariables">
<Column NAME="Variable_name" COLUMN_NAME="Variable_name" TABLE_NAME="MysqlVariables" />
<Column NAME="Value" COLUMN_NAME="Value" TABLE_NAME="MysqlVariables" />
</GetView>
</ExecutionDescriptor>
</Metric>
collection file,
<CollectionItem NAME="MYSQL_MYSQL_DB" UPLOAD_ON_FETCH="TRUE" CONFIG="TRUE">
<Schedule OFFSET_TYPE="INCREMENTAL">
<IntervalSchedule INTERVAL="24" TIME_UNIT="Hr" />
</Schedule>
<MetricColl NAME="MYSQL_MYSQL_DB_VAR" />
</CollectionItem>
<CollectionItem NAME="ConnectionLimit">
<Schedule>
<IntervalSchedule INTERVAL="5" TIME_UNIT="Min" />
</Schedule>
<MetricColl NAME="ConnectionLimit">
<Condition COLUMN_NAME="Connection_Limit" WARNING="90" CRITICAL="95" OPERATOR="GE" OCCURRENCES="1" />
</MetricColl>
</CollectionItem>
Thanks,
Satine