diff --git a/docs/configurations.mdx b/docs/configurations.mdx
index 990399601..aa67061d4 100644
--- a/docs/configurations.mdx
+++ b/docs/configurations.mdx
@@ -48,7 +48,7 @@ The following performance-related configurations are available for the Consensus
 ### `parallel_executor_count`
 
 - **Field:** `scalar.db.consensus_commit.parallel_executor_count`
-- **Description:** Number of executors (threads) for parallel execution. This number refers to the total number of threads across transactions in a ScalarDB Cluster node or a ScalarDB process.
+- **Description:** Number of executors (threads) for parallel execution. This number refers to the total number of threads across transactions in a ScalarDB Cluster node or a ScalarDB Core process.
 - **Default value:** `128`
 
 ### `parallel_preparation.enabled`
@@ -214,7 +214,7 @@ Select a database to see the configurations available for each storage.
     <h4>`jdbc.isolation_level`</h4>
 
     - **Field:** `scalar.db.jdbc.isolation_level`
-    - **Description:** Isolation level for JDBC. `READ_UNCOMMITTED`, `READ_COMMITTED`, `REPEATABLE_READ`, or `SERIALIZABLE` can be specified.
+    - **Description:** Isolation level for JDBC. `READ_COMMITTED`, `REPEATABLE_READ`, or `SERIALIZABLE` can be specified.
     - **Default value:** Underlying-database specific
 
     <h4>`jdbc.table_metadata.connection_pool.min_idle`</h4>
diff --git a/docs/scalardb-cluster/scalardb-cluster-configurations.mdx b/docs/scalardb-cluster/scalardb-cluster-configurations.mdx
index 51f212d35..4063e1f26 100644
--- a/docs/scalardb-cluster/scalardb-cluster-configurations.mdx
+++ b/docs/scalardb-cluster/scalardb-cluster-configurations.mdx
@@ -67,7 +67,7 @@ The following node-related configurations are available for ScalarDB Cluster.
 ##### `cluster.node.decommissioning_duration_secs`
 
 - **Field:** `scalar.db.cluster.node.decommissioning_duration_secs`
-- **Description:** Decommissioning duration in seconds.
+- **Description:** Duration in seconds until a ScalarDB Cluster node is actually decommissioned when shutting down.
 - **Default value:** `30`
 
 ##### `cluster.node.grpc.max_inbound_message_size`
@@ -125,7 +125,7 @@ The following performance-related configurations are available for the Consensus
 #### `parallel_executor_count`
 
 - **Field:** `scalar.db.consensus_commit.parallel_executor_count`
-- **Description:** Number of executors (threads) for parallel execution. This number refers to the total number of threads across transactions in a ScalarDB Cluster node or a ScalarDB process.
+- **Description:** Number of executors (threads) for parallel execution. This number refers to the total number of threads across transactions in a ScalarDB Cluster node or a ScalarDB Core process.
 - **Default value:** `128`
 
 #### `parallel_preparation.enabled`
@@ -291,7 +291,7 @@ Select a database to see the configurations available for each storage.
     <h4>`jdbc.isolation_level`</h4>
 
     - **Field:** `scalar.db.jdbc.isolation_level`
-    - **Description:** Isolation level for JDBC. `READ_UNCOMMITTED`, `READ_COMMITTED`, `REPEATABLE_READ`, or `SERIALIZABLE` can be specified.
+    - **Description:** Isolation level for JDBC. `READ_COMMITTED`, `REPEATABLE_READ`, or `SERIALIZABLE` can be specified.
     - **Default value:** Underlying-database specific
 
     <h4>`jdbc.table_metadata.connection_pool.min_idle`</h4>