Mac Drivers For Linux

The ODBC drivers for Linux and macOS support AlwaysOn Availability Groups. For more information about AlwaysOn Availability Groups, see:

You can specify the availability group listener of a given availability group in the connection string. If an ODBC application on Linux or macOS is connected to a database in an availability group that fails over, the original connection is broken and the application must open a new connection to continue work after the failover.

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The ODBC drivers on Linux and macOS iterate sequentially through all IP addresses associated with a DNS hostname if you are not connecting to an availability group listener, and multiple IP addresses are associated with the hostname.

If the DNS server's first returned IP address is not connectable, these iterations can be time consuming. When connecting to an availability group listener, the driver attempts to establish connections to all IP addresses in parallel. If a connection attempt succeeds, the driver discards any pending connection attempts.

Note

Because a connection can fail due to an availability group failover, implement connection retry logic; retry a failed connection until it reconnects. Increasing connection timeout and implementing connection retry logic increases the chance of connecting to an availability group.

Connecting With MultiSubnetFailover

Always specify MultiSubnetFailover=Yes when connecting to a SQL Server 2012 (11.x) availability group listener or SQL Server 2012 (11.x) Failover Cluster Instance. MultiSubnetFailover enables faster failover for all Availability Groups and failover cluster instance in SQL Server 2012 (11.x). MultiSubnetFailover also significantly reduces failover time for single and multi-subnet AlwaysOn topologies. During a multisubnet failover, the client attempts connections in parallel. During a subnet failover, the driver aggressively retries the TCP connection.

The MultiSubnetFailover connection property indicates that the application is being deployed in an availability group or Failover Cluster Instance. The driver tries to connect to the database on the primary SQL Server instance by trying to connect to all the IP addresses. When connecting with MultiSubnetFailover=Yes, the client retries TCP connection attempts faster than the operating system's default TCP retransmit intervals. MultiSubnetFailover=Yes enables faster reconnection after failover of either an AlwaysOn Availability Group or an AlwaysOn Failover Cluster Instance. MultiSubnetFailover=Yes applies to both single- and multi-subnet Availability Groups and Failover Cluster Instances.

Use MultiSubnetFailover=Yes when connecting to an availability group listener or Failover Cluster Instance. Otherwise, your application's performance can be negatively affected.

Note the following when connecting to a server in an availability group or Failover Cluster Instance:

• Specify MultiSubnetFailover=Yes to improve performance when connecting to a single subnet or multi-subnet Availability Group.

• Specify the availability group listener of the availability group as the server in your connection string.

• You cannot connect to a SQL Server instance configured with more than 64 IP addresses.

• Both SQL Server Authentication or Kerberos Authentication can be used with MultiSubnetFailover=Yes without affecting the behavior of the application.

• You can increase the value of loginTimeout to accommodate for failover time and reduce the application's connection retry attempts.

• Distributed transactions are not supported.

If read-only routing is not in effect, connecting to a secondary replica location in an availability group fails in the following situations:

1. If the secondary replica location is not configured to accept connections.

2. If an application uses ApplicationIntent=ReadWrite and the secondary replica location is configured for read-only access.

A connection fails if a primary replica is configured to reject read-only workloads and the connection string contains ApplicationIntent=ReadOnly.

Specifying Application Intent

The keyword ApplicationIntent can be specified in your connection string. The assignable values are ReadWrite or ReadOnly. The default is ReadWrite.

When ApplicationIntent=ReadOnly, the client requests a read workload when connecting. The server enforces the intent at connection time, and during a USE database statement.

The ApplicationIntent keyword does not work with legacy read-only databases.

Targets of ReadOnly

When a connection chooses ReadOnly, the connection is assigned to any of the following special configurations that might exist for the database:

• • A database can allow or disallow read workloads on the targeted Always On database. This choice is controlled by using the ALLOW_CONNECTIONS clause of the PRIMARY_ROLE and SECONDARY_ROLE Transact-SQL statements.

If none of those special targets are available, the regular database is read from.

The ApplicationIntent keyword enables read-only routing.

Read-Only Routing

Read-only routing is a feature that can ensure the availability of a read-only replica of a database. To enable read-only routing, all of the following apply:

• You must connect to an Always On Availability Group availability group listener.

• The ApplicationIntent connection string keyword must be set to ReadOnly.

• The Availability Group must be configured by the database administrator to enable read-only routing.

Download typing software for mac. Multiple connections each using read-only routing might not all connect to the same read-only replica. Changes in database synchronization or changes in the server's routing configuration can result in client connections to different read-only replicas. You can ensure that all read-only requests connect to the same read-only replica. Ensure this sameness by not passing an availability group listener to the Server connection string keyword. Instead, specify the name of the read-only instance.

Read-only routing may take longer than connecting to the primary. The longer wait is because read-only routing first connects to the primary, and then looks for the best available readable secondary. Due to these multiple steps, you should increase your login timeout to at least 30 seconds.

ODBC Syntax

Two ODBC connection string keywords support AlwaysOn Availability Groups:

• ApplicationIntent

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• MultiSubnetFailover

For more information about ODBC connection string keywords, see Using Connection String Keywords with SQL Server Native Client.

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The equivalent connection attributes are:

• SQL_COPT_SS_APPLICATION_INTENT

• SQL_COPT_SS_MULTISUBNET_FAILOVER Download office for mac.

For more information about ODBC connection attributes, see SQLSetConnectAttr.

An ODBC application that uses AlwaysOn Availability Groups can use one of two functions to make the connection:

See Also

There was a time when people used to get USB not recognized errors when they try to establish a connection between a computer and an external smartphone device. Just like that, today Android users are tired of facing this USB not recognized error whenever they try to connect Android device with their computer (PC). TheADBDriver.com is here to help the Android community to get rid of USB not recognized error forever. In this article, we have discussed Android Debug Bridge (ADB) thoroughly and how one can be able to install proper driver setup on their computer to fix USB problems completely.

Ubuntu Linux For Mac

Android Debug Bridge (ADB) is a tool that Google offers to its developers to debug their applications and the system. Well, we know that command line (CMD prompt) is not something that you can get comfortable with so easily, it requires special skills. I remember CMD prompt was one of my nightmares. To set up the Android debug bridge (ADB) on your computer, you have read the rest of the article.

You will be able to install and set up ADB on your computer no matter what operating system you use. ADB can be used on a variety of OS, but for this article, we will help you set up Android Debug Bridge for Windows, macOS and Linux OS.

Setting up the Android Debug Bridge (ADB)

Some things need to be done on Android smartphone and tablets (to accept the ADB commands) and then we have to follow specific step by step guide for different operating systems. We have described first phone setup (must be done) and the second part separately for other operating systems i.e., Windows, macOS and Linux OS.

If the DNS server's first returned IP address is not connectable, these iterations can be time consuming. When connecting to an availability group listener, the driver attempts to establish connections to all IP addresses in parallel. If a connection attempt succeeds, the driver discards any pending connection attempts.

Note

Because a connection can fail due to an availability group failover, implement connection retry logic; retry a failed connection until it reconnects. Increasing connection timeout and implementing connection retry logic increases the chance of connecting to an availability group.

Connecting With MultiSubnetFailover

Always specify MultiSubnetFailover=Yes when connecting to a SQL Server 2012 (11.x) availability group listener or SQL Server 2012 (11.x) Failover Cluster Instance. MultiSubnetFailover enables faster failover for all Availability Groups and failover cluster instance in SQL Server 2012 (11.x). MultiSubnetFailover also significantly reduces failover time for single and multi-subnet AlwaysOn topologies. During a multisubnet failover, the client attempts connections in parallel. During a subnet failover, the driver aggressively retries the TCP connection.

The MultiSubnetFailover connection property indicates that the application is being deployed in an availability group or Failover Cluster Instance. The driver tries to connect to the database on the primary SQL Server instance by trying to connect to all the IP addresses. When connecting with MultiSubnetFailover=Yes, the client retries TCP connection attempts faster than the operating system's default TCP retransmit intervals. MultiSubnetFailover=Yes enables faster reconnection after failover of either an AlwaysOn Availability Group or an AlwaysOn Failover Cluster Instance. MultiSubnetFailover=Yes applies to both single- and multi-subnet Availability Groups and Failover Cluster Instances.

Use MultiSubnetFailover=Yes when connecting to an availability group listener or Failover Cluster Instance. Otherwise, your application's performance can be negatively affected.

Note the following when connecting to a server in an availability group or Failover Cluster Instance:

• Specify MultiSubnetFailover=Yes to improve performance when connecting to a single subnet or multi-subnet Availability Group.

• Specify the availability group listener of the availability group as the server in your connection string.

• You cannot connect to a SQL Server instance configured with more than 64 IP addresses.

• Both SQL Server Authentication or Kerberos Authentication can be used with MultiSubnetFailover=Yes without affecting the behavior of the application.

• You can increase the value of loginTimeout to accommodate for failover time and reduce the application's connection retry attempts.

• Distributed transactions are not supported.

If read-only routing is not in effect, connecting to a secondary replica location in an availability group fails in the following situations:

1. If the secondary replica location is not configured to accept connections.

2. If an application uses ApplicationIntent=ReadWrite and the secondary replica location is configured for read-only access.

A connection fails if a primary replica is configured to reject read-only workloads and the connection string contains ApplicationIntent=ReadOnly.

Specifying Application Intent

The keyword ApplicationIntent can be specified in your connection string. The assignable values are ReadWrite or ReadOnly. The default is ReadWrite.

When ApplicationIntent=ReadOnly, the client requests a read workload when connecting. The server enforces the intent at connection time, and during a USE database statement.

The ApplicationIntent keyword does not work with legacy read-only databases.

Targets of ReadOnly

When a connection chooses ReadOnly, the connection is assigned to any of the following special configurations that might exist for the database:

• • A database can allow or disallow read workloads on the targeted Always On database. This choice is controlled by using the ALLOW_CONNECTIONS clause of the PRIMARY_ROLE and SECONDARY_ROLE Transact-SQL statements.

If none of those special targets are available, the regular database is read from.

The ApplicationIntent keyword enables read-only routing.

Read-Only Routing

Read-only routing is a feature that can ensure the availability of a read-only replica of a database. To enable read-only routing, all of the following apply:

• You must connect to an Always On Availability Group availability group listener.

• The ApplicationIntent connection string keyword must be set to ReadOnly.

• The Availability Group must be configured by the database administrator to enable read-only routing.

Download typing software for mac. Multiple connections each using read-only routing might not all connect to the same read-only replica. Changes in database synchronization or changes in the server's routing configuration can result in client connections to different read-only replicas. You can ensure that all read-only requests connect to the same read-only replica. Ensure this sameness by not passing an availability group listener to the Server connection string keyword. Instead, specify the name of the read-only instance.

Read-only routing may take longer than connecting to the primary. The longer wait is because read-only routing first connects to the primary, and then looks for the best available readable secondary. Due to these multiple steps, you should increase your login timeout to at least 30 seconds.

ODBC Syntax

Two ODBC connection string keywords support AlwaysOn Availability Groups:

• ApplicationIntent

  Ups for mac mini mac. That way you can work out which is the new SSD and which one should be renamed Ernie. You should be able to see details like SSD brand name, which will make it obvious which is the new SSD.

• MultiSubnetFailover

For more information about ODBC connection string keywords, see Using Connection String Keywords with SQL Server Native Client.

Mac Wifi Drivers For Linux

The equivalent connection attributes are:

• SQL_COPT_SS_APPLICATION_INTENT

• SQL_COPT_SS_MULTISUBNET_FAILOVER Download office for mac.

For more information about ODBC connection attributes, see SQLSetConnectAttr.

An ODBC application that uses AlwaysOn Availability Groups can use one of two functions to make the connection:

See Also

There was a time when people used to get USB not recognized errors when they try to establish a connection between a computer and an external smartphone device. Just like that, today Android users are tired of facing this USB not recognized error whenever they try to connect Android device with their computer (PC). TheADBDriver.com is here to help the Android community to get rid of USB not recognized error forever. In this article, we have discussed Android Debug Bridge (ADB) thoroughly and how one can be able to install proper driver setup on their computer to fix USB problems completely.

Ubuntu Linux For Mac

Android Debug Bridge (ADB) is a tool that Google offers to its developers to debug their applications and the system. Well, we know that command line (CMD prompt) is not something that you can get comfortable with so easily, it requires special skills. I remember CMD prompt was one of my nightmares. To set up the Android debug bridge (ADB) on your computer, you have read the rest of the article.

You will be able to install and set up ADB on your computer no matter what operating system you use. ADB can be used on a variety of OS, but for this article, we will help you set up Android Debug Bridge for Windows, macOS and Linux OS.

Setting up the Android Debug Bridge (ADB)

Some things need to be done on Android smartphone and tablets (to accept the ADB commands) and then we have to follow specific step by step guide for different operating systems. We have described first phone setup (must be done) and the second part separately for other operating systems i.e., Windows, macOS and Linux OS.

Phone Setup

• Go to Settings on your Android smartphone/tablet
• Now, scroll down to the bottom
• Tap on About Phone option (This might be hidden behind the 'System' option, for some OREO devices).
• Then tap Build Number 7 times to enable Developer Mode
• Congratulations, ‘you are now a developer' (this message will pop-up)
• Now, You will see new option i.e., Developer Options in the settings menu
• Simply, go in there and enable the USB Debugging mode option
• The first setup is done i.e., Phone Setup

Note: Next, just follow any one of the Android Debug Bridge (ADB) instructions as per as your computer's operating system. We guarantee you that you will be able to install Android Debug Bridge on your PC after following this tutorial. In fact, you will also be able to fix USB not recognized issue if you do this.

Microsoft Windows ADB Setup

• Download the zip file above, extract the contents of this ZIP file (where you can access easily)
• Access the zip file contents through Windows File Explorer

• Hold Shift + Right-click on the folder and click 'open command prompt here' option (Some Windows 10 users might see 'PowerShell' instead of 'command prompt')

• Now, make sure to connect your Android smartphone with Windows PC with a USB cord
• Do make sure to choose the USB mode to 'file transfer (MTP)' mode (OEMs might and might not need this)

• In the Command Prompt window, enter the following command to launch the ADB daemon: adb devices

• Now, when you do this command above, you will have to allow USB debugging access on your phone's screen. You will want to grant USB Debugging access when prompted (Tap the always allow checkbox, if you never want to see that prompt again).

• All good, just go back to step #6 and re-enter the command and if everything was successful, you should now see your device's serial number in the command prompt.
• Congrats, you can run any ADB command on your device now, start modding and have fun as a developer.

Linux Drivers Download

How to Install ADB on macOS

• Download the zip file above, extract the contents of this ZIP file (where you can access easily)
• Open Terminal
• Now, inside the terminal to browse to the folder you extracted ADB into, enter the following command: cd /path/to/extracted/folder/
• For instance, on my Mac it was this: cd /Users/Doug/Desktop/platform-tools/
• Make sure to connect your Android smartphone with Windows PC with a USB cord
• Do make sure to choose the USB mode to 'file transfer (MTP)' mode (OEMs might and might not need this)
• Once the Terminal is in the same folder your ADB tools are in, you can execute the following command to launch the ADB daemon: adb devices
• Simply, allow USB debugging to always to not see this dialogue ever again.

• After allowing debugging from the smartphone, try re-entering the command line i.e., adb devices if everything was successful, you should see your device's serial number in macOS's Terminal window
• Relax, and enjoy running any ADB command on your device.

How to Install ADB on Linux

• Download the zip file above, extract the contents of this ZIP file (where you can access easily)
• Open a Terminal window
• Enter the following command: cd /path/to/extracted/folder/
• This will change the directory to where you extracted the ADB files.
• For instance, mine is cd /Users/Doug/Desktop/platform-tools/
• Make sure to connect your Android smartphone with Windows PC with a USB cord
• Do make sure to choose the USB mode to 'file transfer (MTP)' mode (OEMs might and might not need this)
• Once the Terminal is in the same folder your ADB tools are in, you can execute the following command to launch the ADB daemon: adb devices
• Back on your smartphone or tablet device, you'll see a prompt asking you to allow USB debugging. Go ahead and grant it.

• After allowing debugging from the smartphone, try re-entering the command line i.e., adb devices if everything was successful, you should see your device's serial number in your Linux OS Terminal window
• Enjoy running any ADB command on your device!

Mac Drivers For Linux Versions

Some Linux users should be aware that there can be an easier way to install ADB on their computer. The guide above will certainly work for you, but those own a Debian or Fedora/SUSE-based distro of Linux can skip steps 1 and 2 of the guide above and use one of the following commands.

• Debian-based Linux users can type the following command to install ADB: sudo apt-get install adb
• Fedora/SUSE-based Linux users can type the following command to install ADB: sudo yum install android-tools

Download Linux For Mac

You have given Windows, Mac iOS, and Linux Android Bridge Setup tutorials above, we hope you like it. Make sure you share this on your social media profiles if you benefit from our guide. Thanks.