diff --git a/cmk/base/check_legacy_includes/db2.py b/cmk/base/check_legacy_includes/db2.py
deleted file mode 100644
index 5c1bb49964e..00000000000
--- a/cmk/base/check_legacy_includes/db2.py
+++ /dev/null
@@ -1,30 +0,0 @@
-#!/usr/bin/env python3
-# Copyright (C) 2019 Checkmk GmbH - License: GNU General Public License v2
-# This file is part of Checkmk (https://checkmk.com). It is subject to the terms and
-# conditions defined in the file COPYING, which is part of this source code package.
-
-
-def parse_db2_dbs(info):
-    current_instance = None
-    lines = iter(info)
-    dbs: dict = {}
-    global_timestamp = None
-    try:
-        while True:
-            line = next(lines)
-            if line[0].startswith("TIMESTAMP") and not current_instance:
-                global_timestamp = int(line[1])
-                continue
-
-            if line[0].startswith("[[["):
-                current_instance = line[0][3:-3]
-                dbs[current_instance] = []
-            elif current_instance:
-                dbs[current_instance].append(line)
-    except Exception:
-        pass
-
-    # By returning a tuple, we trick Checkmk
-    # Even if no information is available, an empty tuple is something
-    # Checkmk won't report any missing agent sections for this type of checks
-    return global_timestamp, dbs
diff --git a/cmk/base/legacy_checks/db2_backup.py b/cmk/base/legacy_checks/db2_backup.py
index 91463a16fdb..af09cc23bcd 100644
--- a/cmk/base/legacy_checks/db2_backup.py
+++ b/cmk/base/legacy_checks/db2_backup.py
@@ -6,10 +6,9 @@
 
 import time
 
-from cmk.base.check_legacy_includes.db2 import parse_db2_dbs
-
 from cmk.agent_based.legacy.v0_unstable import check_levels, LegacyCheckDefinition
 from cmk.agent_based.v2 import IgnoreResultsError, render
+from cmk.plugins.db2.agent_based.lib import parse_db2_dbs
 
 check_info = {}
 
diff --git a/cmk/base/legacy_checks/db2_bp_hitratios.py b/cmk/base/legacy_checks/db2_bp_hitratios.py
index 7dbb7873a4c..a05d940e3ac 100644
--- a/cmk/base/legacy_checks/db2_bp_hitratios.py
+++ b/cmk/base/legacy_checks/db2_bp_hitratios.py
@@ -6,10 +6,9 @@
 
 # mypy: disable-error-code="var-annotated"
 
-from cmk.base.check_legacy_includes.db2 import parse_db2_dbs
-
 from cmk.agent_based.legacy.v0_unstable import LegacyCheckDefinition
 from cmk.agent_based.v2 import IgnoreResultsError
+from cmk.plugins.db2.agent_based.lib import parse_db2_dbs
 
 check_info = {}
 
diff --git a/cmk/base/legacy_checks/db2_connections.py b/cmk/base/legacy_checks/db2_connections.py
index 25134ab464a..8399672256f 100644
--- a/cmk/base/legacy_checks/db2_connections.py
+++ b/cmk/base/legacy_checks/db2_connections.py
@@ -4,10 +4,9 @@
 # conditions defined in the file COPYING, which is part of this source code package.
 
 
-from cmk.base.check_legacy_includes.db2 import parse_db2_dbs
-
 from cmk.agent_based.legacy.v0_unstable import LegacyCheckDefinition
 from cmk.agent_based.v2 import IgnoreResultsError
+from cmk.plugins.db2.agent_based.lib import parse_db2_dbs
 
 check_info = {}
 
diff --git a/cmk/base/legacy_checks/db2_logsizes.py b/cmk/base/legacy_checks/db2_logsizes.py
index 228f72fe385..c4289b5b796 100644
--- a/cmk/base/legacy_checks/db2_logsizes.py
+++ b/cmk/base/legacy_checks/db2_logsizes.py
@@ -6,11 +6,11 @@
 
 # mypy: disable-error-code="var-annotated"
 
-from cmk.base.check_legacy_includes.db2 import parse_db2_dbs
 from cmk.base.check_legacy_includes.df import df_check_filesystem_single
 
 from cmk.agent_based.legacy.v0_unstable import LegacyCheckDefinition
 from cmk.agent_based.v2 import IgnoreResultsError
+from cmk.plugins.db2.agent_based.lib import parse_db2_dbs
 
 check_info = {}
 
diff --git a/cmk/base/legacy_checks/db2_sort_overflow.py b/cmk/base/legacy_checks/db2_sort_overflow.py
index 6d741eac6aa..69712d5960c 100644
--- a/cmk/base/legacy_checks/db2_sort_overflow.py
+++ b/cmk/base/legacy_checks/db2_sort_overflow.py
@@ -4,10 +4,9 @@
 # conditions defined in the file COPYING, which is part of this source code package.
 
 
-from cmk.base.check_legacy_includes.db2 import parse_db2_dbs
-
 from cmk.agent_based.legacy.v0_unstable import LegacyCheckDefinition
 from cmk.agent_based.v2 import IgnoreResultsError
+from cmk.plugins.db2.agent_based.lib import parse_db2_dbs
 
 check_info = {}
 
diff --git a/cmk/base/legacy_checks/db2_tablespaces.py b/cmk/base/legacy_checks/db2_tablespaces.py
index 3a766da3c53..13e99e8701d 100644
--- a/cmk/base/legacy_checks/db2_tablespaces.py
+++ b/cmk/base/legacy_checks/db2_tablespaces.py
@@ -6,11 +6,10 @@
 
 # mypy: disable-error-code="arg-type"
 
-from cmk.base.check_legacy_includes.db2 import parse_db2_dbs
-
 import cmk.plugins.lib.db
 from cmk.agent_based.legacy.v0_unstable import LegacyCheckDefinition
 from cmk.agent_based.v2 import IgnoreResultsError, render
+from cmk.plugins.db2.agent_based.lib import parse_db2_dbs
 
 check_info = {}
 
diff --git a/cmk/plugins/db2/agent_based/lib.py b/cmk/plugins/db2/agent_based/lib.py
new file mode 100644
index 00000000000..e86829d9586
--- /dev/null
+++ b/cmk/plugins/db2/agent_based/lib.py
@@ -0,0 +1,29 @@
+#!/usr/bin/env python3
+# Copyright (C) 2019 Checkmk GmbH - License: GNU General Public License v2
+# This file is part of Checkmk (https://checkmk.com). It is subject to the terms and
+# conditions defined in the file COPYING, which is part of this source code package.
+
+from collections.abc import Mapping
+
+from cmk.agent_based.v2 import StringTable
+
+# this is the truth, but Sequence/tuple would be more desirable than a list.
+Section = tuple[int | None, Mapping[str, list[list[str]]]]
+
+
+def parse_db2_dbs(string_table: StringTable) -> Section:
+    current_instance = None
+    dbs: dict[str, list[list[str]]] = {}
+    global_timestamp = None
+    for line in string_table:
+        if line[0].startswith("TIMESTAMP") and not current_instance:
+            global_timestamp = int(line[1])
+            continue
+
+        if line[0].startswith("[[["):
+            current_instance = line[0][3:-3]
+            dbs[current_instance] = []
+        elif current_instance:
+            dbs[current_instance].append(line)
+
+    return global_timestamp, dbs