SQL Server network latency can make a fast database look slow. An application that fetches 4,000 orders one query at a time pays for every round trip. I measured the loop against one query, tested what ASYNC_NETWORK_IO means, and show how to check your own round trip time.
SQL SERVER – Database Engine TCP Port and Browser UDP Port
I inspect TCP listeners to find the actual Network port in use. A customer wanted a query rather than an assumption.
How to Get Volume Mount Point for SQL Server Files? – Interview Question of the Week #295
Question: How to Get Volume Mount Point for SQL Server Files?
Answer: I was asked this question by my client during the recent Health Check.
Azure SQL Firewall Rules: List, Add and Remove With T-SQL
Azure SQL firewall rules decide which IP addresses can reach a logical server and its databases. This post lists the server-level and database-level rules with T-SQL, adds, changes and removes one, and explains how to find the address Azure sees. It also covers the one thing T-SQL cannot do, which is let you in for the first time.
SQL Azure – Add IP Address to Firewall
To Add IP Address to Firewall rules, I first confirm the intended Azure SQL network path. A home connection prompted this walkthrough.
Connections by Protocol: Shared Memory, TCP and Named Pipes
Connections by protocol tell you whether a client reaches SQL Server through shared memory, TCP or a named pipe, and from which address. This post reads the connection view for your own session, connects three ways to see each protocol, lists every connection with its host and program, and counts them by protocol.
How to Find IP Address of All SQL Server Connection? – Interview Question of the Week #280
Question: How to Find the IP Address of All SQL Server Connection?
I had recently received this question during a recent consultation.