Plan deleting millions of rows with bounded commits, an indexed cutoff, log reuse checks, and a clear choice of retention method.
How to Attach MDF Data File Without LDF Log File – Interview Question of the Week #078
Lost or corrupted your log file? Learn how to attach an MDF data file without the LDF log file, using T-SQL or SQL Server Management Studio.
Tail-Log Backup: Saving the Last Transactions Before a Restore
Take a tail-log backup before an approved restore, understand NORECOVERY and damaged-database options, and rehearse the full recovery chain.
SQL SERVER – Huge Transaction Log in Snapshot Replication!
The log kept growing and sys.databases showed REPLICATION as the reuse wait. Here is how I found why the transaction log in snapshot replication was not reused.
SQL SERVER – Huge Transaction Log (LDF) for Database in Availability Group
A reader’s database in an AlwaysOn availability group grew a Huge Transaction Log of 230 GB with error 9002, AVAILABILITY_REPLICA. Here is what to check.
SQL SERVER – Basic architecture of Transaction Logs
The SQL Server transaction log works like a string of log records, each with an LSN. My simple notes on the basic architecture of transaction logs.
SQL SERVER – Understanding the Basics of Write Ahead Logging (WAL) Protocol
Doing the basics right matters. Here is a simple, story-driven explanation of the Write Ahead Logging (WAL) protocol that keeps SQL Server transactions safe.