What is causing the SQL Server transaction log to grow?

 SQL Server logs every operation in the transaction log. In heavy transactional systems with data modification processes transaction log file grows very fast.  If autogowth is enabled, it could fill up drive space. It is important to identify the largest logging operations what is locking the transaction log from being truncated. This knowledge can help avoid issues when the drive runs out of space. Monitoring and managing these operations will ensure the smooth functioning of the SQL Server database.

Index rebuild and reorganize

Transaction log backup

Long-running or uncommitted transactions

SQL Server Replication and Change Data Capture

Database Mirroring and Always on Availability Group

Long Running Backup

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