Can you tell what should happen if i do a backup/restore?

I'm asking because i did a backup and it got up to the end without errors.

[root@server1 tmp]# tail backup.log
gbak:writing constraint INTEG_293
gbak:writing constraint XPKV3$CONTATOS
gbak:writing constraint R_943
gbak:writing referential constraints
gbak:writing check constraints
gbak:writing SQL roles
gbak:writing SQL role: PUBLICO
gbak:writing SQL role: SOMENTELEITURA
gbak:writing SQL role: PSINIT4_TOOL
gbak:closing file, committing, and finishing. 1027317760 bytes written

Also, my users are using this database all day and nobody noted
anything strange.

Is there some way to know which tables are pointerless?

Regards,

Fabiano.