feat(ingest/db2): add source for IBM Db2

docs/how/updating-datahub.md

@@ -54,6 +54,7 @@ This file documents any backwards-incompatible changes in DataHub and assists pe
 - #14717: The Tableau ingestion source now enables `extract_lineage_from_unsupported_custom_sql_queries` by default. This improves the quality of lineage extracted by using DataHub's SQL parser in cases where the Tableau Catalog API fails to return lineage for Custom SQL queries.
 - #14824: DataHub now supports CDC (Change Data Capture) mode for generating MetadataChangeLogs with guaranteed ordering based on database transaction commits. CDC mode is optional and disabled by default. When enabled via `CDC_MCL_PROCESSING_ENABLED=true`, MCLs are generated from Debezium-captured database changes rather than directly from GMS. This provides stronger ordering guarantees and decoupled processing. Requires MySQL 5.7+ or PostgreSQL 10+ with replication enabled. See [CDC Configuration Guide](configure-cdc.md) for setup instructions.
 - Added multi-client search engine shim for Elasticsearch and OpenSearch support. This enables DataHub to work with ES 7.17 (with API compatibility mode for ES 8.x servers), ES 8.x, and OpenSearch 2.x through a unified interface. The shim includes auto-detection of search engine types and backward compatibility with existing RestHighLevelClient usage. See [elasticsearch-search-client-shim.md](./elasticsearch-search-client-shim.md) for configuration details.
+- Added an ingestion source for IBM Db2 databases.
 
 ## 1.2.0
 

metadata-ingestion/docs/sources/db2/db2_recipe.yml

@@ -0,0 +1,13 @@
+source:
+  type: db2
+  config:
+    # Coordinates
+    host_port: localhost:50000
+    database: dbname
+
+    # Credentials
+    username: db2inst1
+    password: password
+
+sink:
+  # sink configs

metadata-ingestion/setup.py

@@ -462,6 +462,7 @@
     "datahub-lineage-file": set(),
     "datahub-business-glossary": set(),
     "delta-lake": {*data_lake_profiling, *delta_lake},
+    "db2": {"ibm_db_sa"} | sql_common,
     "dbt": {"requests"} | dbt_common | aws_common,
     "dbt-cloud": {"requests"} | dbt_common,
     "dremio": {"requests"} | sql_common,
@@ -772,6 +773,7 @@
             "athena",
             "circuit-breaker",
             "clickhouse",
+            "db2",
             "delta-lake",
             "druid",
             "excel",
@@ -814,6 +816,7 @@
         "cockroachdb = datahub.ingestion.source.sql.cockroachdb:CockroachDBSource",
         "delta-lake = datahub.ingestion.source.delta_lake:DeltaLakeSource",
         "s3 = datahub.ingestion.source.s3:S3Source",
+        "db2 = datahub.ingestion.source.sql.db2:Db2Source",
         "dbt = datahub.ingestion.source.dbt.dbt_core:DBTCoreSource",
         "dbt-cloud = datahub.ingestion.source.dbt.dbt_cloud:DBTCloudSource",
         "dremio = datahub.ingestion.source.dremio.dremio_source:DremioSource",

metadata-ingestion/src/datahub/ingestion/autogenerated/capability_summary.json

@@ -1,5 +1,5 @@
 {
-  "generated_at": "2025-08-28T07:13:19.226648+00:00",
+  "generated_at": "2025-10-08T19:45:31.582840+00:00",
   "generated_by": "metadata-ingestion/scripts/capability_summary.py",
   "plugin_details": {
     "abs": {
@@ -542,6 +542,87 @@
       "platform_name": "File Based Lineage",
       "support_status": "CERTIFIED"
     },
+    "db2": {
+      "capabilities": [
+        {
+          "capability": "CONTAINERS",
+          "description": "Enabled by default",
+          "subtype_modifier": [
+            "Database",
+            "Schema"
+          ],
+          "supported": true
+        },
+        {
+          "capability": "CLASSIFICATION",
+          "description": "Optionally enabled via `classification.enabled`",
+          "subtype_modifier": null,
+          "supported": true
+        },
+        {
+          "capability": "LINEAGE_FINE",
+          "description": "Enabled by default to get lineage for views via `include_view_column_lineage`",
+          "subtype_modifier": [
+            "View"
+          ],
+          "supported": true
+        },
+        {
+          "capability": "DATA_PROFILING",
+          "description": "Optionally enabled via configuration",
+          "subtype_modifier": null,
+          "supported": true
+        },
+        {
+          "capability": "DESCRIPTIONS",
+          "description": "Enabled by default",
+          "subtype_modifier": null,
+          "supported": true
+        },
+        {
+          "capability": "DELETION_DETECTION",
+          "description": "Enabled by default via stateful ingestion",
+          "subtype_modifier": null,
+          "supported": true
+        },
+        {
+          "capability": "DOMAINS",
+          "description": "Supported via the `domain` config field",
+          "subtype_modifier": null,
+          "supported": true
+        },
+        {
+          "capability": "PLATFORM_INSTANCE",
+          "description": "Enabled by default",
+          "subtype_modifier": null,
+          "supported": true
+        },
+        {
+          "capability": "SCHEMA_METADATA",
+          "description": "Enabled by default",
+          "subtype_modifier": null,
+          "supported": true
+        },
+        {
+          "capability": "LINEAGE_COARSE",
+          "description": "Enabled by default to get lineage for views via `include_view_lineage`",
+          "subtype_modifier": [
+            "View"
+          ],
+          "supported": true
+        },
+        {
+          "capability": "TEST_CONNECTION",
+          "description": "Enabled by default",
+          "subtype_modifier": null,
+          "supported": true
+        }
+      ],
+      "classname": "datahub.ingestion.source.sql.db2.Db2Source",
+      "platform_id": "db2",
+      "platform_name": "IBM Db2",
+      "support_status": "TESTING"
+    },
     "dbt": {
       "capabilities": [
         {