In the PlayStation 3 modding scene, the term "Rebuild Database" refers to a system utility that scans the PS3’s hard drive and reorganizes the internal file structure (the VFLASH). On a standard PS3, this is used to fix corrupted files, restore missing XMB categories, or recover from a faulty system update.
menu used to fix corrupted data, missing icons, or system sluggishness. PlayStation How to Rebuild the PS3 Database download rebuild database ps3 pkg
/dev_hdd0/home/00000001/exdata/.app.db and sysconf.db.BUT – the homebrew community has created unofficial PKGs that call the same system functions. The most famous and trusted one is called “Rebuild Database v1.1” or versions found inside “PS3 Tools Collection” by developers like deank (of multiMAN fame) or aldostools. Comprehensive Guide: Download, Rebuild, and Use PS3 Database