The transaction log file for the Apex Central database is …\data\db_ApexCentral_log.LDF. SQL Server generates the transaction log as part of its normal operation.
db_ApexCentral_log.LDF contains all managed product transactions using db_ApexCentral.mdf.
By default, the transaction log file has no file size limit on the SQL Server configuration. This leads to filling up the available disk space.
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