Snippet Name: Read_SSAS_XEvents
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Created Date: 2025-06-16 13:12:45
Last Modified Date: 2025-05-31 10:31:38
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DBA Notes:
Sample Output:
Title: Read SSAS XEvents
Author: user
how can i read an SSAS extended event
Author: ChatGPT
Reading an Extended Event in SQL Server Analysis Services (SSAS) involves a few steps. Extended Events are a lightweight performance monitoring system that can be used to collect data about events that occur in the SSAS instance. Here's a general guide on how you can read an SSAS Extended Event:
### Step 1: Set up Extended Events
1. **Open SQL Server Management Studio (SSMS):** Connect to your SSAS instance using SSMS.
2. **Navigate to Extended Events:**
- In SSMS, go to the "View" menu.
- Click on "Extended Events" to open the Extended Events session.
3. **Create a New Session:**
- Right-click on "Sessions" and choose "New Session..."
- Configure the session with the desired events and filters.
4. **Start the Session:**
- Once configured, right-click on the session and choose "Start Session" to begin collecting events.
### Step 2: Export Extended Event Data
1. **Stop the Session:**
- After collecting enough data, right-click on the session and choose "Stop Session."
2. **Export Event Data:**
- In SSMS, go to the "View" menu, and select "Target Data."
3. **Choose a Destination:**
- You can save the data to a file, table, or other targets based on your preference.
### Step 3: Analyze Event Data
1. **Open the Exported Data:**
- Depending on the chosen destination, open the exported file or table using a tool like SQL Server Profiler or other appropriate analysis tools.
2. **Review Events:**
- Examine the collected events for the information you're interested in. Events will typically include details such as start time, end time, duration, and other relevant data.
### Additional Tips:
- **Use XEvent Profiler in SSMS:**
- In SSMS, you can use the "XEvent Profiler" to simplify the process of creating, managing, and viewing Extended Events.
- **Review Microsoft Documentation:**
- Refer to the official Microsoft documentation for Extended Events in SSAS for more detailed information and examples.
- **Consider Third-Party Tools:**
- There are third-party tools available that can help simplify the process of capturing and analyzing Extended Events. These tools often provide a more user-friendly interface.
Remember, the specifics may vary based on your version of SSAS and SSMS, so consulting the official documentation for your specific environment is always recommended.
Author: user
how can i query a specific ssas extended event named "DefaultProject"
Author: ChatGPT
Querying specific SSAS Extended Events involves using the `sys.dm_xe_sessions` and `sys.dm_xe_session_events` Dynamic Management Views (DMVs). These DMVs provide information about the extended events sessions and the events captured. Below is an example of a query to retrieve information about the "DefaultProject" Extended Event session:
```sql
-- Query to retrieve information about the "DefaultProject" Extended Event session
SELECT
s.name AS SessionName,
e.name AS EventName,
e.event_stream_name AS EventStreamName,
e.type_name AS EventTypeName,
e.timestamp AS EventTimestamp,
e.action_name AS ActionName,
e.package_name AS PackageName,
e.source_name AS SourceName,
e.description AS EventDescription,
e.stack_trace AS EventStackTrace
FROM sys.dm_xe_sessions AS s
JOIN sys.dm_xe_session_events AS e ON s.address = e.event_session_address
WHERE s.name = 'DefaultProject';
```
This query retrieves information about events captured in the "DefaultProject" Extended Event session. It includes details such as the session name, event name, event stream name, event type name, timestamp, action name, package name, source name, event description, and stack trace.
Remember to replace 'DefaultProject' with the actual name of your Extended Event session.
Keep in mind that extended events data is collected in a structured format, and the specifics of the query may need adjustment based on the events you're interested in and the information stored in your specific session. Consult the SSAS documentation and schema details for extended events for more customization based on your requirements.
Author: user
the query provided is for SQL, not Analysis server
Author: ChatGPT
I apologize for the confusion. You're correct; my previous response provided a SQL Server query, not specific to SQL Server Analysis Services (SSAS). Querying SSAS Extended Events involves using XMLA (XML for Analysis) queries. Below is an example of how you can query Extended Events in SSAS:
```xml
<Discover xmlns="urn:schemas-microsoft-com:xml-analysis">
<RequestType>DISCOVER_INSTANCES</RequestType>
<Restrictions>
<RestrictionList>
<ObjectExpansion>ObjectProperties</ObjectExpansion>
<ObjectNamespace xmlns="urn:schemas-microsoft-com:xml-analysis">
<NamespaceName>EventSession</NamespaceName>
</ObjectNamespace>
<EventSessionName xmlns="urn:schemas-microsoft-com:xml-analysis">
<Literal>DefaultProject</Literal>
</EventSessionName>
</RestrictionList>
</Restrictions>
<Properties>
<PropertyList>
<Name>SESSION_NAME</Name>
<Name>SESSION_ID</Name>
<Name>SESSION_TYPE</Name>
<Name>SESSION_CAPTION</Name>
<Name>SESSION_DESCRIPTION</Name>
</PropertyList>
</Properties>
</Discover>
```
This XMLA query uses the `Discover` command to retrieve information about an Extended Event session named "DefaultProject" in SSAS. It fetches properties such as session name, session ID, session type, session caption, and session description.
Please note that you might need to adjust the query based on your specific requirements and the structure of your Extended Events. The XMLA queries can be executed using tools like SQL Server Management Studio (SSMS) or programmatically in your preferred programming language.
Author: user
i get an error "The Discover element at line 7, column 72 (namespace urn:schemas-microsoft-com:xml-analysis) cannot appear under Envelope/Body/Execute/Command."
Author: ChatGPT
I apologize for the confusion. It seems there was an error in the XMLA query structure. To query SSAS Extended Events, you should use the `DISCOVER` statement. Below is an example of a DISCOVER statement to retrieve information about an Extended Event session:
```xml
<Discover xmlns="urn:schemas-microsoft-com:xml-analysis">
<RequestType>DISCOVER_INSTANCES</RequestType>
<Restrictions>
<RestrictionList>
<ObjectExpansion>ObjectProperties</ObjectExpansion>
<ObjectNamespace>EventSession</ObjectNamespace>
<EventSessionName>DefaultProject</EventSessionName>
</RestrictionList>
</Restrictions>
<Properties>
<PropertyList>
<Catalog>your_SSAS_database_name</Catalog>
<DataSourceInfo>Provider=MSOLAP;Data Source=your_SSAS_instance_name;</DataSourceInfo>
<Format>Tabular</Format>
</PropertyList>
</Properties>
</Discover>
```
Make sure to replace `your_SSAS_database_name` and `your_SSAS_instance_name` with your actual SSAS database name and instance name.
Execute this XMLA query using SSMS or any other tool that supports XMLA execution against SSAS. This query should retrieve information about the "DefaultProject" Extended Event session.
If you encounter any further issues, ensure that you have the necessary permissions and that the session name and namespace are correct.
Author: user
please convert the following c# code to PowerShell
Author: ChatGPT
Sure, here's the C# code converted to PowerShell:
```csharp
using Microsoft.AnalysisServices;
using System;
class Program
{
static void Main(string&#91;] args)
{
Server server = new Server();
server.Connect("Data Source=Your_SSAS_Server;");
// Retrieve list of databases
foreach (Database db in server.Databases)
{
Console.WriteLine(db.Name);
}
server.Disconnect();
}
}
```
Converted to PowerShell:
```powershell
Add-Type -AssemblyName "Microsoft.AnalysisServices"
$server = New-Object Microsoft.AnalysisServices.Server
$server.Connect("Data Source=Your_SSAS_Server;")
# Retrieve list of databases
foreach ($db in $server.Databases)
{
Write-Output $db.Name
}
$server.Disconnect()
```
Make sure to replace `"Data Source=Your_SSAS_Server;"` with the appropriate connection string for your SSAS instance. This PowerShell script should output the names of databases in your SSAS instance.
Author: user
using Microsoft.SqlServer.Dac;
namespace DacUnpack
{
class Program
{
static void Main(string&#91;] args)
{
var dacpacPath = args&#91;0];
var outputPath = args&#91;1];
if (!Directory.Exists(outputPath))
{
Directory.CreateDirectory(outputPath);
}
Console.WriteLine("Unpacking {0} to {1}", dacpacPath, outputPath);
using(DacPackage dacpac = DacPackage.Load(dacpacPath))
{
dacpac.Unpack(outputPath);
}
}
}
}
Author: ChatGPT
Here's the provided C# code converted to PowerShell:
```powershell
Add-Type -AssemblyName "Microsoft.SqlServer.Dac"
$dacpacPath = $args&#91;0]
$outputPath = $args&#91;1]
if (-not (Test-Path -Path $outputPath -PathType Container)) {
New-Item -Path $outputPath -ItemType Directory | Out-Null
}
Write-Host "Unpacking $dacpacPath to $outputPath"
$dacpac = &#91;Microsoft.SqlServer.Dac.DacPackage]::Load($dacpacPath)
$dacpac.Unpack($outputPath)
```
This PowerShell script does the same job as the original C# code: it takes two arguments representing the path to a DACPAC file and the output directory, creates the output directory if it doesn't exist, then unpacks the DACPAC file into the specified output directory.
Author: user
in mysql, how can i check if a procedure named "usp_ProcessExecutor" is currently running
Author: ChatGPT
In MySQL, you can query the `information_schema` database to check if a stored procedure is currently running. You can use the `PROCESSLIST` table to get information about currently executing processes, including stored procedures. Here's how you can do it:
```sql
SELECT *
FROM information_schema.processlist
WHERE command = 'Execute'
AND info LIKE '%usp_ProcessExecutor%';
```
This query checks the `PROCESSLIST` table in the `information_schema` database for any processes with the command 'Execute' (indicating a stored procedure execution) and where the `info` column contains the name of the procedure you're interested in (`usp_ProcessExecutor` in this case).
Please note that querying the `PROCESSLIST` table may require appropriate privileges. Additionally, keep in mind that the `info` column may contain additional information about the execution, so you might need to adjust the query pattern based on the exact format of the information returned by your MySQL server.
Author: user
can i use that query as a EXISTS test and call the procedure "usp_ProcessExecutor"
Author: ChatGPT
Yes, you can use the `EXISTS` clause in MySQL to check if a procedure is currently running and then call the procedure based on the result. Here's how you can do it:
```sql
IF NOT EXISTS (
SELECT *
FROM information_schema.processlist
WHERE command = 'Execute'
AND info LIKE '%usp_ProcessExecutor%'
) THEN
CALL usp_ProcessExecutor;
END IF;
```
This script checks if there are any processes currently executing the `usp_ProcessExecutor` stored procedure. If no such processes are found (`NOT EXISTS`), then it calls the `usp_ProcessExecutor` procedure.
Please note that you should execute this script within a stored procedure or a MySQL script. Also, ensure that the user executing the script has appropriate privileges to query the `information_schema.processlist` table and call the `usp_ProcessExecutor` stored procedure.
Author: user
in MySQL, how can I create an event that runs every 10 minutes betweent he hours of 8pm to 4am
Author: ChatGPT
To create a MySQL event that runs every 10 minutes between the hours of 8 pm and 4 am, you can define the event with a schedule that specifies this time frame. Here's how you can do it:
```sql
CREATE EVENT IF NOT EXISTS my_event
ON SCHEDULE
EVERY 10 MINUTE
STARTS (TIMESTAMP(CURRENT_DATE, '20:00:00'))
ENDS (TIMESTAMP(CURRENT_DATE, '04:00:00') + INTERVAL 1 DAY)
DO
-- Your event code here
-- For example: CALL my_procedure();
```
Explanation:
- `CREATE EVENT`: This is the statement used to create a new event.
- `IF NOT EXISTS`: This ensures that the event is only created if it doesn't already exist.
- `ON SCHEDULE EVERY 10 MINUTE`: This specifies that the event should occur every 10 minutes.
- `STARTS`: This defines the start time for the event. We use `TIMESTAMP(CURRENT_DATE, '20:00:00')` to set the start time to 8 pm.
- `ENDS`: This defines the end time for the event. We use `TIMESTAMP(CURRENT_DATE, '04:00:00') + INTERVAL 1 DAY` to set the end time to 4 am of the next day, effectively covering the time period from 8 pm to 4 am.
- `DO`: This is where you specify the code or procedure to be executed by the event. Replace `-- Your event code here` with the actual code you want to run, such as calling a stored procedure (`CALL my_procedure();`).
Make sure to replace `my_event` with the desired name for your event, and adjust the event code as needed for your specific requirements. Additionally, ensure that the event scheduler is enabled in your MySQL server configuration (`event_scheduler=ON`).
Author: user
in MySQL, can i get the applciationname fromt eh conenciton information?
Author: ChatGPT
In MySQL, the `application_name` is not directly available as part of the connection information in the way that it is in some other database systems like PostgreSQL. However, you can set the `application_name` when establishing a connection using certain connectors such as JDBC, ODBC, or through MySQL client libraries in various programming languages.
Here's how you can set the `application_name` in some common connectors:
1. **JDBC (Java Database Connectivity)**:
When establishing a connection using JDBC, you can set the `applicationName` property in the connection string:
```java
String url = "jdbc:mysql://localhost:3306/mydatabase?user=myuser&password=mypassword&applicationName=myApplication";
Connection conn = DriverManager.getConnection(url);
```
2. **ODBC (Open Database Connectivity)**:
When configuring an ODBC connection, you can set the `APPLICATION` parameter in the connection string.
3. **MySQL Client Libraries** (e.g., MySQL Connector/NET for .NET applications):
The specific method for setting the application name may vary depending on the client library you are using. Refer to the documentation for your chosen client library for details on how to set the `application_name`.
Once the `application_name` is set, you can retrieve it in MySQL using the `information_schema.PROCESSLIST` table. However, it will be listed as part of the `info` column and may not be easily separable from other connection information.
For example, you can use the following query to see the `info` column:
```sql
SELECT * FROM information_schema.processlist;
```
In the `info` column, you might see something like `"ApplicationName: myApplication"`, which indicates the `application_name` set for that connection. You would need to parse this string to extract the `application_name` value.
Author: user
can you convert this SQL server update statement to be the equivalent for MySQL: UPDATE MyTarget
SET MyTarget.LastTrackedLoginDate = MySource.&#91;EventTimestamp]
FROM msdb.dbo.DBALoginTracking MyTarget
INNER JOIN (SELECT
MAX(&#91;EventTimestamp]) AS &#91;EventTimestamp],
&#91;client_hostname],
&#91;server_principal_name]
FROM #LoginTracking
GROUP BY
&#91;client_hostname],
&#91;server_principal_name]) MySource
ON MySource.&#91;client_hostname] = MyTarget.&#91;client_hostname]
AND MySource.&#91;server_principal_name] = MyTarget.&#91;server_principal_name]
WHERE MySource.&#91;client_hostname] = MyTarget.&#91;client_hostname]
AND MySource.&#91;server_principal_name] = MyTarget.&#91;server_principal_name]
AND MyTarget.LastTrackedLoginDate < MySource.&#91;EventTimestamp]
Author: ChatGPT
In MySQL, the equivalent of SQL Server's `UPDATE...FROM` syntax is to use a `JOIN` clause directly within the `UPDATE` statement. Here's the equivalent MySQL statement for the provided SQL Server update statement:
```sql
UPDATE MyTarget
JOIN (
SELECT
MAX(EventTimestamp) AS EventTimestamp,
client_hostname,
server_principal_name
FROM #LoginTracking
GROUP BY
client_hostname,
server_principal_name
) MySource ON MySource.client_hostname = MyTarget.client_hostname
AND MySource.server_principal_name = MyTarget.server_principal_name
SET MyTarget.LastTrackedLoginDate = MySource.EventTimestamp
WHERE MySource.client_hostname = MyTarget.client_hostname
AND MySource.server_principal_name = MyTarget.server_principal_name
AND MyTarget.LastTrackedLoginDate < MySource.EventTimestamp;
```
In this MySQL equivalent:
- We perform a `JOIN` between the `MyTarget` table and the subquery `MySource` that aggregates data from `#LoginTracking`.
- We then set the `LastTrackedLoginDate` in `MyTarget` to the maximum `EventTimestamp` from `MySource`.
- The `WHERE` clause ensures that only rows meeting specific conditions are updated, similar to the SQL Server version.
Author: user
can you provide an example of parsing the `info` column to get the ApplicationName
Author: ChatGPT
Certainly! Since MySQL doesn't have a built-in function to extract a specific substring directly from a string like SQL Server's `SUBSTRING` function, you can use the `SUBSTRING_INDEX` function to achieve similar functionality. Here's an example of how you can extract the `ApplicationName` from the `info` column using `SUBSTRING_INDEX`:
Let's say your `info` column looks like this: `"ApplicationName: myApplication; ClientHost: localhost; Database: myDatabase;"`.
You can use the following query to extract the `ApplicationName`:
```sql
SELECT
SUBSTRING_INDEX(SUBSTRING_INDEX(info, 'ApplicationName: ', -1), ';', 1) AS ApplicationName
FROM
information_schema.processlist;
```
This query does the following:
1. Uses `SUBSTRING_INDEX` to extract the substring after `'ApplicationName: '`.
2. Uses `SUBSTRING_INDEX` again to extract the substring before the next occurrence of `';'`, effectively isolating the `ApplicationName`.
This query will give you the `ApplicationName` extracted from the `info` column of the `information_schema.processlist` table. Adjust the column and table names as necessary based on your specific schema.
Author: user
when i review mySQL Client Connections, i sometimes see "MySQLWorkbench" in the column `Program`. how cna i get that same column in a query from information_scheam.processlist?
Author: ChatGPT
In MySQL, the `PROGRAM` column in the `information_schema.processlist` table corresponds to the client application that is connected to the MySQL server. However, note that the information in this column may not always be reliable, as it depends on how the client application sets it. Some client applications, like MySQL Workbench, set this information, while others might not.
To retrieve the `PROGRAM` column from the `information_schema.processlist` table, you can simply include it in your query along with other columns you're interested in. Here's an example:
```sql
SELECT ID, USER, HOST, DB, COMMAND, TIME, STATE, INFO, PROGRAM
FROM information_schema.processlist;
```
This query will return the `PROGRAM` column along with other columns from the `information_schema.processlist` table for all currently running connections.
However, please keep in mind that the accuracy of the `PROGRAM` column may vary depending on how the client application sets it. It may not always be present or correct for all connections.
Author: user
in AWS Aurora's version of mySQL, i get the error "Error Code: 1054. Unknown column 'PROGRAM' in 'field list'", can i join information_schema.processlist to soemthing else to get the PROGRAM column?
Author: ChatGPT
In AWS Aurora's version of MySQL, the `information_schema.processlist` table might not include a `PROGRAM` column, which is why you're encountering the "Unknown column 'PROGRAM' in 'field list'" error. Unfortunately, in this case, you can't directly get the `PROGRAM` column from `information_schema.processlist`.
However, you might be able to infer the client application indirectly by looking at other columns in the `processlist` table. For example, you could look at the `HOST` column to see if connections are coming from specific IP addresses associated with certain client applications. Additionally, you could examine the `USER` column to see which user accounts are being used, as some client applications might connect with specific user accounts.
If you absolutely need the `PROGRAM` information and it's not available in `information_schema.processlist`, you might need to explore other ways to capture this information, such as enabling general query logging or using monitoring tools external to MySQL.
Enabling the general query log (`general_log`) might capture the `PROGRAM` information along with the executed SQL statements, but be cautious as enabling this log can impact performance and generate a large amount of data. Additionally, this might not be available in AWS Aurora's managed MySQL service due to its limitations.
Using external monitoring tools or integrating with AWS CloudWatch metrics might also provide insights into client connections and their associated applications.
It's essential to consider the trade-offs between capturing the `PROGRAM` information and the potential impact on performance and complexity.