# DR backup database is locked

**URL:** https://forums.foundationdb.org/t/dr-backup-database-is-locked/1204
**Category:** Using FoundationDB
**Created:** [March 7, 2019, 10:11am UTC](https://forums.foundationdb.org/t/dr-backup-database-is-locked/1204 "2019-03-07T10:11:59Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![Vasilii](https://avatars.discourse-cdn.com/v4/letter/v/258eb7/32.png) [@Vasilii](https://forums.foundationdb.org/u/Vasilii)
#### Post date: [March 7, 2019, 10:11am UTC](https://forums.foundationdb.org/t/dr-backup-database-is-locked/1204/1 "2019-03-07T10:11:59Z")

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$ fdbdr status -s /etc/foundationdb/fdb.cluster -d /etc/foundationdb/fdb\_replica.cluster  
The DR on tag `default’ is a complete copy of the primary database.

The DR is 106792.039639 seconds behind.

we have complete copy of the primary database. why we cant read from cluster(we have message database is locked)?

we want to read data from our dr backup.  
how can we do this? or dr backup readeble after switch?

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### Author: ![alexmiller](https://sea1.discourse-cdn.com/foundationdb/user_avatar/forums.foundationdb.org/alexmiller/32/326_2.png) [@alexmiller](https://forums.foundationdb.org/u/alexmiller)
#### Post date: [March 7, 2019, 8:11pm UTC](https://forums.foundationdb.org/t/dr-backup-database-is-locked/1204/2 "2019-03-07T20:11:33Z")

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If you want to read from a locked database, you can set the transaction option `FDBTransactionOptions::READ_LOCK_AWARE`.

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### Author: ![mengxu](https://sea1.discourse-cdn.com/foundationdb/user_avatar/forums.foundationdb.org/mengxu/32/893_2.png) [@mengxu](https://forums.foundationdb.org/u/mengxu)
#### Post date: [March 12, 2019, 6:34pm UTC](https://forums.foundationdb.org/t/dr-backup-database-is-locked/1204/3 "2019-03-12T18:34:05Z")

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> [@Vasilii](#):
>
> The DR is 106792.039639 seconds behind.

Do you happen to know why the DR is so far behind?

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### Author: ![Vasilii](https://avatars.discourse-cdn.com/v4/letter/v/258eb7/32.png) [@Vasilii](https://forums.foundationdb.org/u/Vasilii)
#### Post date: [March 13, 2019, 7:29am UTC](https://forums.foundationdb.org/t/dr-backup-database-is-locked/1204/4 "2019-03-13T07:29:54Z")

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we run write test.  
this second not really second.  
then we off write test this time fast go down