add show activation to maintenance statement

src/.vuepress/sidebar_timecho/V1.3.x/en.ts

@@ -169,7 +169,7 @@ export const enSidebar = {
           children: [
             { text: 'Query Performance Analysis', link: 'Query-Performance-Analysis' },
             { text: 'Load Balance', link: 'Load-Balance' },
-            { text: 'Maintenance statement', link: 'Maintenance-commands_timecho' },
+            { text: 'Maintenance statement', link: 'Maintenance-commands' },
           ],
         },
       ],

src/.vuepress/sidebar_timecho/V1.3.x/zh.ts

@@ -151,7 +151,7 @@ export const zhSidebar = {
           children: [
             { text: '查询性能分析', link: 'Query-Performance-Analysis' },
             { text: '负载均衡', link: 'Load-Balance' },
-            { text: '运维语句', link: 'Maintenance-statement_timecho' },
+            { text: '运维语句', link: 'Maintenance-statement' },
           ],
         },
       ],

src/UserGuide/Master/Table/SQL-Manual/SQL-Maintenance-Statements_timecho.md

@@ -255,6 +255,66 @@ IoTDB> SHOW AVAILABLE URLS
 +----------+-------+
 ```
 
+### 1.10 View Service Information
+
+> Supported since V2.0.8.2
+
+**Syntax**:
+
+```sql
+showServicesStatement
+    : SHOW SERVICES <ON dataNodeId>
+    ;
+```
+
+**Example**:
+
+```sql
+IoTDB> SHOW SERVICES
+IoTDB> SHOW SERVICES ON 1
+```
+
+**Result**:
+
+```sql
++--------------+-------------+---------+
+| Service Name | DataNode ID | State   |
++--------------+-------------+---------+
+| MQTT         | 1           | STOPPED |
+| REST         | 1           | RUNNING |
++--------------+-------------+---------+
+```
+
+### 1.11 View Cluster Activation Status
+
+**Syntax**:
+
+```SQL
+showActivationStatement
+    : SHOW ACTIVATION
+    ;
+```
+
+**Example**:
+
+```SQL
+IoTDB> SHOW ACTIVATION
+```
+
+**Result**:
+
+```SQL
++---------------+---------+-----------------------------+
+|    LicenseInfo|    Usage|                        Limit|
++---------------+---------+-----------------------------+
+|         Status|ACTIVATED|                            -|
+|    ExpiredTime|        -|2026-04-30T00:00:00.000+08:00|
+|  DataNodeLimit|        1|                    Unlimited|
+|       CpuLimit|       16|                    Unlimited|
+|    DeviceLimit|       30|                    Unlimited|
+|TimeSeriesLimit|       72|                1,000,000,000|
++---------------+---------+-----------------------------+
+```
 
 ## 2. Status Configuration
 
@@ -373,32 +433,6 @@ localOrClusterMode
 IoTDB> FLUSH test_db TRUE ON LOCAL;
 ```
 
-### 3.2 Clear DataNode Cache
-
-**Syntax:**
-
-```SQL
-clearCacheStatement
-    : CLEAR clearCacheOptions? CACHE localOrClusterMode?
-    ;
-
-clearCacheOptions
-    : ATTRIBUTE
-    | QUERY
-    | ALL
-    ;
-
-localOrClusterMode
-    : (ON (LOCAL | CLUSTER))
-    ;
-```
-
-**Example:**
-
-```SQL
-IoTDB> CLEAR ALL CACHE ON LOCAL;
-```
-
 ## 4. Data Repair
 
 ### 4.1 Start Background TsFile Repair

src/UserGuide/Master/Table/User-Manual/Maintenance-commands_timecho.md

@@ -396,12 +396,46 @@ Execution result:
 +--------------+-------------+---------+
 ```
 
+### 1.12 View Cluster Activation Status
+
+**Description**：Returns the activation status of the current cluster.
+
+#### Syntax:
+
+```SQL
+showActivationStatement
+    : SHOW ACTIVATION
+    ;
+```
+
+#### Examples:
+
+```SQL
+IoTDB> SHOW ACTIVATION
+```
+
+Execution result:
+
+```SQL
++---------------+---------+-----------------------------+
+|    LicenseInfo|    Usage|                        Limit|
++---------------+---------+-----------------------------+
+|         Status|ACTIVATED|                            -|
+|    ExpiredTime|        -|2026-04-30T00:00:00.000+08:00|
+|  DataNodeLimit|        1|                    Unlimited|
+|       CpuLimit|       16|                    Unlimited|
+|    DeviceLimit|       30|                    Unlimited|
+|TimeSeriesLimit|       72|                1,000,000,000|
++---------------+---------+-----------------------------+
+```
+
 ### 1.13 View Node Configuration
+
 **Description**: By default, returns the effective configuration items from the configuration file of the specified node (identified by `node_id`). If `node_id` is not specified, returns the configuration of the directly connected DataNode.
 Adding the `all` parameter returns all configuration items (the `value` of unconfigured items is `null`).
 Adding the `with desc` parameter returns configuration items with descriptions.
 
-> Supported since version 2.0.9
+> Supported since version 2.0.9.1
 
 #### Syntax:
 ```SQL
@@ -419,6 +453,7 @@ showConfigurationStatement
 | description   | string      | Configuration description (optional) |
 
 #### Examples:
+
 1. View configuration of the directly connected DataNode
 ```SQL
 SHOW CONFIGURATION;

src/UserGuide/Master/Tree/SQL-Manual/SQL-Manual_timecho.md

@@ -842,7 +842,7 @@ select * into ::(backup_${4}) from root.sg.** align by device;
 select s1, s2 into root.sg_copy.d1(t1, t2), aligned root.sg_copy.d2(t1, t2) from root.sg.d1, root.sg.d2 align by device;
 ```
 
-## 7. Maintennance
+## 7. Maintenance
 Generate the corresponding query plan:
 ```sql
 explain select s1,s2 from root.sg.d1;
@@ -851,6 +851,9 @@ Execute the corresponding SQL, analyze the execution and output:
 ```sql
 explain analyze select s1,s2 from root.sg.d1 order by s1;
 ``` 
+
+For more Maintenance commands, please refer to[Maintenance commands](../User-Manual/Maintenance-commands_timecho.md)
+
 ## 8. OPERATOR
 
 For more details, see document [Operator-and-Expression](./Operator-and-Expression.md).

src/UserGuide/Master/Tree/User-Manual/Maintenance-commands_timecho.md

@@ -302,12 +302,46 @@ Execution result:
 +--------------+-------------+---------+
 ```
 
-### 1.9 View Disk Space Usage
+### 1.9 View Cluster Activation Status
+
+**Description**：Returns the activation status of the current cluster.
+
+#### Syntax:
+
+```SQL
+showActivationStatement
+    : SHOW ACTIVATION
+    ;
+```
+
+#### Examples:
+
+```SQL
+IoTDB> SHOW ACTIVATION
+```
+
+Execution result:
+
+```SQL
++---------------+---------+-----------------------------+
+|    LicenseInfo|    Usage|                        Limit|
++---------------+---------+-----------------------------+
+|         Status|ACTIVATED|                            -|
+|    ExpiredTime|        -|2026-04-30T00:00:00.000+08:00|
+|  DataNodeLimit|        1|                    Unlimited|
+|       CpuLimit|       16|                    Unlimited|
+|    DeviceLimit|       30|                    Unlimited|
+|TimeSeriesLimit|       72|                1,000,000,000|
++---------------+---------+-----------------------------+
+```
+
+### 1.10 View Disk Space Usage
+
 **Description**: Returns the disk space usage of the specified `pattern`, including the size of ChunkGroups and the size of Metadata.
 
 **Note**: Statistics are based on the actual size of data in TsFiles; therefore, deletions made via `mods` are not considered.
 
-> Supported since version 2.0.9
+> Supported since version 2.0.9.1
 
 #### Syntax:
 ```sql
@@ -325,6 +359,7 @@ pathPattern
 **Explanation**: The `pattern` is used to match devices, must start with `ROOT`, and intermediate nodes in the path support `*` or `**`.
 
 #### Result Set
+
 | Column Name   | Column Type | Description                      |
 |---------------|-------------|----------------------------------|
 | Database      | string      | Database name                    |

src/UserGuide/latest-Table/SQL-Manual/SQL-Maintenance-Statements_timecho.md

@@ -255,6 +255,66 @@ IoTDB> SHOW AVAILABLE URLS
 +----------+-------+
 ```
 
+### 1.10 View Service Information
+
+> Supported since V2.0.8.2
+
+**Syntax**:
+
+```sql
+showServicesStatement
+    : SHOW SERVICES <ON dataNodeId>
+    ;
+```
+
+**Example**:
+
+```sql
+IoTDB> SHOW SERVICES
+IoTDB> SHOW SERVICES ON 1
+```
+
+**Result**:
+
+```sql
++--------------+-------------+---------+
+| Service Name | DataNode ID | State   |
++--------------+-------------+---------+
+| MQTT         | 1           | STOPPED |
+| REST         | 1           | RUNNING |
++--------------+-------------+---------+
+```
+
+### 1.11 View Cluster Activation Status
+
+**Syntax**:
+
+```SQL
+showActivationStatement
+    : SHOW ACTIVATION
+    ;
+```
+
+**Example**:
+
+```SQL
+IoTDB> SHOW ACTIVATION
+```
+
+**Result**:
+
+```SQL
++---------------+---------+-----------------------------+
+|    LicenseInfo|    Usage|                        Limit|
++---------------+---------+-----------------------------+
+|         Status|ACTIVATED|                            -|
+|    ExpiredTime|        -|2026-04-30T00:00:00.000+08:00|
+|  DataNodeLimit|        1|                    Unlimited|
+|       CpuLimit|       16|                    Unlimited|
+|    DeviceLimit|       30|                    Unlimited|
+|TimeSeriesLimit|       72|                1,000,000,000|
++---------------+---------+-----------------------------+
+```
 
 ## 2. Status Configuration
 
@@ -373,32 +433,6 @@ localOrClusterMode
 IoTDB> FLUSH test_db TRUE ON LOCAL;
 ```
 
-### 3.2 Clear DataNode Cache
-
-**Syntax:**
-
-```SQL
-clearCacheStatement
-    : CLEAR clearCacheOptions? CACHE localOrClusterMode?
-    ;
-
-clearCacheOptions
-    : ATTRIBUTE
-    | QUERY
-    | ALL
-    ;
-
-localOrClusterMode
-    : (ON (LOCAL | CLUSTER))
-    ;
-```
-
-**Example:**
-
-```SQL
-IoTDB> CLEAR ALL CACHE ON LOCAL;
-```
-
 ## 4. Data Repair
 
 ### 4.1 Start Background TsFile Repair

src/UserGuide/latest-Table/User-Manual/Maintenance-commands_timecho.md

@@ -396,12 +396,45 @@ Execution result:
 +--------------+-------------+---------+
 ```
 
+### 1.12 View Cluster Activation Status
+
+**Description**：Returns the activation status of the current cluster.
+
+#### Syntax:
+
+```SQL
+showActivationStatement
+    : SHOW ACTIVATION
+    ;
+```
+
+#### Examples:
+
+```SQL
+IoTDB> SHOW ACTIVATION
+```
+
+Execution result:
+
+```SQL
++---------------+---------+-----------------------------+
+|    LicenseInfo|    Usage|                        Limit|
++---------------+---------+-----------------------------+
+|         Status|ACTIVATED|                            -|
+|    ExpiredTime|        -|2026-04-30T00:00:00.000+08:00|
+|  DataNodeLimit|        1|                    Unlimited|
+|       CpuLimit|       16|                    Unlimited|
+|    DeviceLimit|       30|                    Unlimited|
+|TimeSeriesLimit|       72|                1,000,000,000|
++---------------+---------+-----------------------------+
+```
+
 ### 1.13 View Node Configuration
 **Description**: By default, returns the effective configuration items from the configuration file of the specified node (identified by `node_id`). If `node_id` is not specified, returns the configuration of the directly connected DataNode.
 Adding the `all` parameter returns all configuration items (the `value` of unconfigured items is `null`).
 Adding the `with desc` parameter returns configuration items with descriptions.
 
-> Supported since version 2.0.9
+> Supported since version 2.0.9.1
 
 #### Syntax:
 ```SQL