diff --git a/libervia/backend/memory/migration/versions/ccd879fef17e_add_namespace_indexes_to_privateind_.py b/libervia/backend/memory/migration/versions/ccd879fef17e_add_namespace_indexes_to_privateind_.py
new file mode 100644
index 00000000..86e945e2
--- /dev/null
+++ b/libervia/backend/memory/migration/versions/ccd879fef17e_add_namespace_indexes_to_privateind_.py
@@ -0,0 +1,38 @@
+"""add namespace indexes to "PrivateInd*" tables
+
+Revision ID: ccd879fef17e
+Revises: 3ddac15a0a39
+Create Date: 2026-04-28 12:16:01.759630
+
+"""
+
+from alembic import op
+import sqlalchemy as sa
+
+# revision identifiers, used by Alembic.
+revision = "ccd879fef17e"
+down_revision = "3ddac15a0a39"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    with op.batch_alter_table("private_ind", schema=None) as batch_op:
+        batch_op.create_index(
+            "private_ind__namespace_profile_id", ["namespace", "profile_id"], unique=False
+        )
+
+    with op.batch_alter_table("private_ind_bin", schema=None) as batch_op:
+        batch_op.create_index(
+            "private_ind_bin__namespace_profile_id",
+            ["namespace", "profile_id"],
+            unique=False,
+        )
+
+
+def downgrade():
+    with op.batch_alter_table("private_ind_bin", schema=None) as batch_op:
+        batch_op.drop_index("private_ind_bin__namespace_profile_id")
+
+    with op.batch_alter_table("private_ind", schema=None) as batch_op:
+        batch_op.drop_index("private_ind__namespace_profile_id")
diff --git a/libervia/backend/memory/sqla_mapping.py b/libervia/backend/memory/sqla_mapping.py
index 2e18d9c7..7bcc35dc 100644
--- a/libervia/backend/memory/sqla_mapping.py
+++ b/libervia/backend/memory/sqla_mapping.py
@@ -547,6 +547,9 @@ class PrivateGen(Base):
 
 class PrivateInd(Base):
     __tablename__ = "private_ind"
+    __table_args__ = (
+        Index("private_ind__namespace_profile_id", "namespace", "profile_id"),
+    )
 
     namespace = Column(Text, primary_key=True)
     key = Column(Text, primary_key=True)
@@ -566,6 +569,9 @@ class PrivateGenBin(Base):
 
 class PrivateIndBin(Base):
     __tablename__ = "private_ind_bin"
+    __table_args__ = (
+        Index("private_ind_bin__namespace_profile_id", "namespace", "profile_id"),
+    )
 
     namespace = Column(Text, primary_key=True)
     key = Column(Text, primary_key=True)