[otrs] ArticleStorageSwitch.pl Out of memory

Hello, I'm trying to migrate attachments from the database to the File system using the command bin/otrs.ArticleStorageSwitch.pl -s ArticleStorageDB -d ArticleStorageFS The migration process starts with out any problem but finish with the error Out of memory. The sympthoms are: 1) not all the attachments are migrated to the FS only a few. 2) the database size is the same than the beginning 3) the out of memory error occur Otrs version 2.4.2 Database Mysql Version 5.0.45 The database size is around 50 G The database filsesystem has 150 G and the attachments storage filesystem has more than 200 G free Memory installed 3 G Thanks in advance