[Samba] samba-tool dbcheck "Indexed and full searches both failed"

[Denis Morejon]

Hi:

I have two samba 4.7.4 DCs. One of them has problems. I can not use 
samba-tool on it. Then, when I try to fix It's database It returns:

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root at zentyal1:/usr/lib/cgi-bin/account_operator# samba-tool dbcheck --fix

ltdb: 
tdb(/usr/local/samba/private/sam.ldb.d/DC=DTCF,DC=ETECSA,DC=CU.ldb): 
tdb_rec_read bad magic 0x434e5355 at offset=35404552

ERROR(ldb): uncaught exception - Indexed and full searches both failed!

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root at zentyal1:/usr/lib/cgi-bin/account_operator# samba-tool dbcheck 
--fix --cross-ncs

ltdb: 
tdb(/usr/local/samba/private/sam.ldb.d/DC=DOMAINDNSZONES,DC=DTCF,DC=ETECSA,DC=CU.ldb): 
tdb_rec_read bad magic 0xd9fee666 at offset=3187652

ERROR(ldb): uncaught exception - Indexed and full searches both failed!
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When I try this in the second DC It returns no error.

Can I copy these files (/usr/local/samba/private/sam.ldb.d/*) from the 
second DC to the first one to solve the corruption ? Should these files 
be equals ?