diff --git a/fluent-plugin-oceanbase-logs/README.md b/fluent-plugin-oceanbase-logs/README.md
index e8fe261e..c637bead 100644
--- a/fluent-plugin-oceanbase-logs/README.md
+++ b/fluent-plugin-oceanbase-logs/README.md
@@ -13,7 +13,7 @@ Every record includes **`ob_log_type`** (`slow_sql` or `top_sql`). With `include
 
 | Gem | Fluentd | Ruby |
 | --- | --- | --- |
-| >= 0.1.2 | >= 1.8.0 | >= 2.4 |
+| >= 0.1.5 | >= 1.8.0 | >= 2.4 |
 
 For **Grafana Loki** output you additionally need [fluent-plugin-grafana-loki](https://github.com/grafana/fluent-plugin-grafana-loki).
 
@@ -44,6 +44,42 @@ tenant_id         "#{ENV['OCEANBASE_TENANT_ID']}"
 
 Optional: `OCEANBASE_ENDPOINT`, `OCEANBASE_FETCH_INTERVAL`, `OCEANBASE_LOOKBACK_SECONDS`, `OCEANBASE_DB_NAME`, `OCEANBASE_SEARCH_KEYWORD`, `OCEANBASE_PROJECT_ID` — see `.env.example` and the Docker table below.
 
+### Multiple instances, tenants, and databases
+
+Use one or more `<target>` blocks. Each block sets **`instance_id`** and **`tenant_id`** (required). Optional **`db_name`** applies the same `dbName` filter as the top-level parameter, for that scope only.
+
+When any `<target>` is present, the plugin **only** uses those scopes; top-level `instance_id` / `tenant_id` / `db_name` are ignored (you may leave them empty). Global options such as `access_key_id`, `log_type`, `search_keyword`, `endpoint`, and `fetch_interval` still apply to every target.
+
+Example: two clusters, one tenant each, and a second scope that filters one database on another tenant:
+
+```conf
+<source>
+  @type oceanbase_logs
+  tag  oceanbase.slow_sql
+  log_type slow_sql
+  access_key_id     "#{ENV['OCEANBASE_ACCESS_KEY_ID']}"
+  access_key_secret "#{ENV['OCEANBASE_ACCESS_KEY_SECRET']}"
+  endpoint     "#{ENV['OCEANBASE_ACCESS_KEY_SECRET']}"
+  fetch_interval   60
+  lookback_seconds 600
+  deduplicate      true
+  include_metadata true
+  <target>
+    instance_id "OCEANBASE_INSTANCE_1"
+    tenant_id   "OCEANBASE_TENANT_A"
+  </target>
+  <target>
+    instance_id "OCEANBASE_INSTANCE_2"
+    tenant_id   "OCEANBASE_TENANT_B"
+  </target>
+  <storage>
+    @type local
+    persistent true
+    path /var/log/fluentd/slow_sql_seen
+  </storage>
+</source>
+```
+
 ### Example: Slow SQL → JSON file
 
 Full sample: [`example/fluentd.conf`](example/fluentd.conf).
diff --git a/fluent-plugin-oceanbase-logs/example/oceanbase2loki-docker/docker-compose.yml b/fluent-plugin-oceanbase-logs/example/oceanbase2loki-docker/docker-compose.yml
index c75e9e2e..594ee5ba 100644
--- a/fluent-plugin-oceanbase-logs/example/oceanbase2loki-docker/docker-compose.yml
+++ b/fluent-plugin-oceanbase-logs/example/oceanbase2loki-docker/docker-compose.yml
@@ -26,6 +26,7 @@ services:
 
   fluentd-oceanbase-demo:
     image: fluent/fluentd:v1.16-1
+    platform: linux/amd64
     container_name: fluentd-oceanbase-demo
     user: root
     command:
@@ -46,7 +47,7 @@ services:
       OCEANBASE_ENDPOINT: "${OCEANBASE_ENDPOINT:-api-cloud-cn.oceanbase.com}"
       OCEANBASE_FETCH_INTERVAL: "${OCEANBASE_FETCH_INTERVAL:-60}"
       OCEANBASE_LOOKBACK_SECONDS: "${OCEANBASE_LOOKBACK_SECONDS:-600}"
-      OCEANBASE_DB_NAME: "${OCEANBASE_DB_NAME:-test}"
+      OCEANBASE_DB_NAME: "${OCEANBASE_DB_NAME:-}"
       OCEANBASE_SEARCH_KEYWORD: "${OCEANBASE_SEARCH_KEYWORD:-}"
       OCEANBASE_PROJECT_ID: "${OCEANBASE_PROJECT_ID:-}"
     networks:
diff --git a/fluent-plugin-oceanbase-logs/fluent-plugin-oceanbase-logs.gemspec b/fluent-plugin-oceanbase-logs/fluent-plugin-oceanbase-logs.gemspec
index e65aace0..33519148 100644
--- a/fluent-plugin-oceanbase-logs/fluent-plugin-oceanbase-logs.gemspec
+++ b/fluent-plugin-oceanbase-logs/fluent-plugin-oceanbase-logs.gemspec
@@ -10,7 +10,7 @@ Gem::Specification.new do |spec|
   spec.summary       = "Fluentd input plugin for OceanBase Cloud Logs"
   spec.description   = "Fetches Slow SQL and Top SQL per-execution samples from OceanBase Cloud " \
                         "and emits them as Fluentd events (one record per trace, dedup by traceId)."
-  spec.homepage      = "https://github.com/sc-source/fluent-plugin-oceanbase-logs"
+  spec.homepage      = "https://github.com/oceanbase/ecology-plugins/tree/main/fluent-plugin-oceanbase-logs"
   spec.license       = "Apache-2.0"
 
   spec.files         = Dir['lib/**/*', 'README.md', 'LICENSE']
diff --git a/fluent-plugin-oceanbase-logs/test/plugin/test_in_oceanbase_logs.rb b/fluent-plugin-oceanbase-logs/test/plugin/test_in_oceanbase_logs.rb
index c50e85de..6dda3d64 100644
--- a/fluent-plugin-oceanbase-logs/test/plugin/test_in_oceanbase_logs.rb
+++ b/fluent-plugin-oceanbase-logs/test/plugin/test_in_oceanbase_logs.rb
@@ -174,6 +174,50 @@ def stub_samples_auth(samples_response, times: 2)
       assert_raise(Fluent::ConfigError) { create_driver(conf) }
     end
 
+    test 'multiple targets: top-level instance_id and tenant_id may be empty' do
+      conf = %(
+    tag oceanbase.logs
+    access_key_id     test_access_key_id
+    access_key_secret test_access_key_secret
+    fetch_interval    60
+    lookback_seconds  300
+    deduplicate       false
+    <target>
+      instance_id ob_a
+      tenant_id t_a
+    </target>
+    <target>
+      instance_id ob_b
+      tenant_id t_b
+      db_name analytics_db
+    </target>
+  )
+      d = create_driver(conf)
+      assert_equal 2, d.instance.instance_variable_get(:@fetch_scopes).size
+      scopes = d.instance.instance_variable_get(:@fetch_scopes)
+      assert_equal 'ob_a', scopes[0].instance_id
+      assert_equal 't_a',  scopes[0].tenant_id
+      assert_nil scopes[0].db_name
+      assert_equal 'ob_b', scopes[1].instance_id
+      assert_equal 'analytics_db', scopes[1].db_name
+    end
+
+    test 'target section missing tenant_id raises error' do
+      conf = %(
+    tag oceanbase.logs
+    access_key_id     test_access_key_id
+    access_key_secret test_access_key_secret
+    fetch_interval    60
+    lookback_seconds  300
+    deduplicate       false
+    <target>
+      instance_id ob_a
+      tenant_id ""
+    </target>
+  )
+      assert_raise(Fluent::ConfigError) { create_driver(conf) }
+    end
+
   end
 
   # ----------------------------------------------------------- fetching
@@ -267,6 +311,50 @@ def stub_samples_auth(samples_response, times: 2)
       d.run(timeout: 3)
       assert_equal 0, d.events.length
     end
+
+    test 'slow_sql with two targets calls both APIs and emits scoped metadata' do
+      list_one = {
+        'success' => true,
+        'data' => { 'dataList' => [{ 'sqlId' => 'SQL_MULTI_A' }], 'total' => 1 },
+      }
+      list_two = {
+        'success' => true,
+        'data' => { 'dataList' => [{ 'sqlId' => 'SQL_MULTI_B' }], 'total' => 1 },
+      }
+      stub_digest_auth(
+        %r{instances/ob_a/tenants/t_a/slowSql},
+        list_one
+      )
+      stub_digest_auth(
+        %r{instances/ob_b/tenants/t_b/slowSql},
+        list_two
+      )
+      stub_samples_auth(SAMPLES_RESPONSE, times: 2)
+
+      conf = %(
+    tag oceanbase.logs
+    access_key_id     test_access_key_id
+    access_key_secret test_access_key_secret
+    fetch_interval    60
+    lookback_seconds  300
+    deduplicate       false
+    <target>
+      instance_id ob_a
+      tenant_id t_a
+    </target>
+    <target>
+      instance_id ob_b
+      tenant_id t_b
+    </target>
+  )
+      d = create_driver(conf)
+      d.run(timeout: 3)
+
+      events = d.events
+      assert events.length >= 2, "Expected at least 2 events, got #{events.length}"
+      insts = events.map { |e| e[2]['ob_instance_id'] }.uniq.sort
+      assert_equal %w[ob_a ob_b], insts
+    end
   end
 
   # ---------------------------------------------------------- deduplication