new updates to main doc

new updates to main doc

Author: rishabh-ghosh24

manageability-and-operations/observability-and-manageability/database-management/Custom Metrics/create_metric_extension.md

@@ -133,6 +133,7 @@ Confirm Enable again when asked.<br>
 
 <img src="./images/ME11.png" height="100" width="200"><br>
 
+<img src="./images/ME12.png" height="100" width="200"><br>
 
 This will take some time to execute and once you see success, check back after at least 5–6 minutes to see at least 2 metric points on the Metrics Explorer graph as shown below.
 </td>
@@ -144,17 +145,18 @@ Allow sufficient time for the metric collection to start. Initial data points ma
 <tr>
 <td align="left">7</td>
 <td align="left">
-**View Metrics in Monitoring Service**
+<b>View Metrics in Monitoring Service</b><br>
 
-Now that we have already published the metric extension, make sure to select the namespace appmgmt and not the test one as before.
+Now that we have already published the metric extension, make sure to select the namespace appmgmt and not the test one as before.<br>
 
-<img src="../images/MONITORING_PROD.png" height="100" width="200" align="left">
+<img src="./images/ME13.png" height="100" width="200"><br>
 
-&nbsp;
+Click on Update Chart and review the graph.<br>
+<img src="./images/ME14.png" height="100" width="200"><br>
 
-Click on Update Chart and review the graph.
+Click on Show Data Table to see the metric values clearly<br>
+<img src="./images/ME15.png" height="100" width="200"><br>
 
-Click on Show Data Table to see the metric values clearly.
 </td>
 <td align="left">
 After publishing, use the "appmgmt" namespace (not the test namespace) to view production metrics data.
@@ -164,7 +166,7 @@ After publishing, use the "appmgmt" namespace (not the test namespace) to view p
 <tr>
 <td align="left">8</td>
 <td align="left">
-**Example 2: PDB-Level Metric — % Used in SYSTEM Tablespace in PDB**
+<b>Create Metric Extension at the PDB level — % Storage Used in SYSTEM Tablespace in PDB</b><br><br>
 
 ```sql
 SELECT
@@ -180,13 +182,11 @@ FROM
 
 Use this when Target Level is PDB.
 
-Follow the exact same steps as we did for CDB query above. I will only note the changes below.
-
-Select Pluggable DB for PDB level query. Test, Publish and Enable as we did earlier.
+Follow the exact same steps as we did for CDB query above. I will only note the changes below.<br>
+<img src="./images/ME16.png" height="100" width="200"><br>
+Select Pluggable DB for PDB level query. Test, Publish and Enable as we did earlier.<br>
+<img src="./images/ME17.png" height="100" width="200"><br>
 
-<img src="../images/PDB_METRIC.png" height="100" width="200" align="left">
-
-&nbsp;
 </td>
 <td align="left">
 For PDB-level metrics, ensure you select "Pluggable DB" as the target level and that the SQL query is appropriate for PDB context.
@@ -196,15 +196,14 @@ For PDB-level metrics, ensure you select "Pluggable DB" as the target level and
 <tr>
 <td align="left">9</td>
 <td align="left">
-**View PDB Metrics**
+<b>View PDB Metrics</b><br>
 
-Go to Monitoring -> Metrics Explorer and select these options.
+Go to Monitoring -> Metrics Explorer and select these options.<br>
 
-<img src="../images/PDB_MONITORING.png" height="100" width="200" align="left">
+<img src="./images/ME18.png" height="100" width="200"><br>
 
-&nbsp;
-
-Click on Update to view the captured metrics.
+Click on Update to view the captured metrics.<br>
+<img src="./images/ME19.png" height="100" width="200"><br>
 </td>
 <td align="left">
 PDB-level metrics will appear under the same monitoring namespace but will be specific to the pluggable database context.
@@ -224,7 +223,7 @@ PDB-level metrics will appear under the same monitoring namespace but will be sp
   - Output columns or types are incorrect.
 
 Here's an example of what an incorrect SQL query error would look like during Test phase.
-
+<img src="./images/ME20.png" height="100" width="200"><br>
 Hence login to the DB beforehand and test the SQL first to ensure the queries are valid and return the expected data.
 
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