Add additional physical read/write metrics to oracledb receiver (#37814)

<!--Ex. Fixing a bug - Describe the bug and how this fixes the issue.
Ex. Adding a feature - Explain what this achieves.-->
#### Description
This PR adds the following metrics to the `oracledb` receiver:
- 'physical reads direct' (disabled by default)
- 'physical read io requests' (disabled by default)
- 'physical writes' (enabled by default)
- 'physical writes direct' (disabled by default)
- 'physical write io requests' (disabled by default)

<!-- Issue number (e.g. #1234) or full URL to issue, if applicable. -->
#### Link to tracking issue
N/A

<!--Describe what testing was performed and which tests were added.-->
#### Testing

Manual testing.

<!--Describe the documentation added.-->
#### Documentation

Automatically generated by `mdatagen` for each metric.

---------

Co-authored-by: Antoine Toulme <[email protected]>
Co-authored-by: Curtis Robert <[email protected]>

Author: 3 people

.chloggen/add-new-oracledb-metrics.yaml

@@ -0,0 +1,30 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: oracledbreceiver
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Add support for additional read/write metrics
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [37814]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext: |
+  The following metrics are now available, all disabled by default:
+  'physical reads direct', 'physical writes', 'physical writes direct',
+  'physical read io requests' and 'physical write io requests' metrics'
+
+# If your change doesn't affect end users or the exported elements of any package,
+# you should instead start your pull request title with [chore] or use the "Skip Changelog" label.
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: [user]

receiver/oracledbreceiver/documentation.md

@@ -257,6 +257,46 @@ Number of times a current block was requested from the buffer cache.
 | ---- | ----------- | ---------- | ----------------------- | --------- |
 | {gets} | Sum | Int | Cumulative | true |
 
+### oracledb.physical_read_io_requests
+
+Number of read requests for application activity
+
+| Unit | Metric Type | Value Type | Aggregation Temporality | Monotonic |
+| ---- | ----------- | ---------- | ----------------------- | --------- |
+| {requests} | Sum | Int | Cumulative | true |
+
+### oracledb.physical_reads_direct
+
+Number of reads directly from disk, bypassing the buffer cache
+
+| Unit | Metric Type | Value Type | Aggregation Temporality | Monotonic |
+| ---- | ----------- | ---------- | ----------------------- | --------- |
+| {reads} | Sum | Int | Cumulative | true |
+
+### oracledb.physical_write_io_requests
+
+Number of write requests for application activity
+
+| Unit | Metric Type | Value Type | Aggregation Temporality | Monotonic |
+| ---- | ----------- | ---------- | ----------------------- | --------- |
+| {requests} | Sum | Int | Cumulative | true |
+
+### oracledb.physical_writes
+
+Number of physical writes
+
+| Unit | Metric Type | Value Type | Aggregation Temporality | Monotonic |
+| ---- | ----------- | ---------- | ----------------------- | --------- |
+| {writes} | Sum | Int | Cumulative | true |
+
+### oracledb.physical_writes_direct
+
+Number of writes directly to disk, bypassing the buffer cache
+
+| Unit | Metric Type | Value Type | Aggregation Temporality | Monotonic |
+| ---- | ----------- | ---------- | ----------------------- | --------- |
+| {writes} | Sum | Int | Cumulative | true |
+
 ## Resource Attributes
 
 | Name | Description | Values | Enabled |