Some common reasons why the transaction log cannot be reused automatically

Managing SQL Server databases may sometimes be challenging especially when it comes to dealing with transaction log file internal space usage. More specifically, today I am going to talk about SQL Server wait types that may prevent SQL Server from automatically reusing transaction log internal space and therefore resulting in running out of space and affecting detrimentally on the availability of the database. For instance, if the recovery model of the database is either Full or Bulk-Logged then you may see a LOG_BACKUP wait type while the next backup log is waited to be run. Consequently, if those databases do not have Log Backups tasks, their transaction log files will be growing without control and when they take all the disk space available the databases will stop working until the internal space of the transaction logs is truncated by executing log backups manually.