I am running Perl script on CentOS7, BerkeleyDB data is generated continuously, because of a sudden power failure, the database is damaged, I can not read any data, there are 52G data.

I try to fix it, but did not succeed, __db.001 , __db.002 , __db.003 have been removed in the repair process, please help me, what is the method to get the data?

Thank you!

Below this is the way to produce data:

......
sub DB{
    $env=new BerkeleyDB::Env
        -Home=>$db_home,
        -Flags=>DB_CREATE|DB_INIT_MPOOL
    || die;
    $db=tie(%hash,"BerkeleyDB::Btree",
        -Filename=>$db_name,
        -Flags=>DB_CREATE,
        -Env=>$env)
    || die;
}
......
[download]

The following is a reading method, but is no work

$|=1;
use BerkeleyDB;
my $env=new BerkeleyDB::Env
    -Home=>'/home/root/URL/DB'
    #-Flags=>DB_CREATE#|DB_INIT_MPOOL
|| die;
my %hash;
my $db=tie(%hash,"BerkeleyDB::Btree",
       -Filename=>'URL.db',
      # -Flags=>DB_CREATE,
       -Env=>$env)
|| die;
while(my ($k,$v)=each %hash){
    print "$k\t$v\n";
}
untie $db;
[download]