Topic: Error opening block database - page 2. (Read 816 times)

Your best option is probably to try running the -reindex command and see if that fixes your issue a bit. Unless you can run/have run any hard drive testing software that has found a problem in the hard drive, then this error may likely continue.

Also, do you have ANY antivirus installed, there were rumors that at least one block in the main chain got deleted from the blockchain by antivirus because someone decided to add a virus signature to a block (not to be malicious intentionally but probably to see if it caused AV issues from the blockchain itself - which was proven).

Hi, no i dont have the folder open anywhere

here is the rest of the log

You don't happen to have that folder open anywhere do you?
Was it able to obtain "a LOCK on the database"?

Can you post from the startup of that instance of bitcoin core of the debug.log.
You could try reindexing it or checking the stability of your hard drive/defragment the hard drive using optimisation tools.

Hi, I am also getting this error
Running a mini PC Windows 10, blockchain on 4TB external drive

Got this from the debug log


any ideas what is wrong? I am really struggling to get my node up and running, thank you

All done.


I am now in the process of waiting.

Thanks heaps for your help.

You guys rock!!!!!

When this problem arrives:

1. Your HDD might be full
2. You may be using a very old indexed drive (Try reindex the drive)

You can change your blockchain default drive location by first locating your blockchain directory. This could be found in the /Library/Application Support/Bitcoin/. Copy the directory folder and and paste it in another drive which is free and then right click and go to properties and paste the code in Target.


Now you can restart your wallet and everything will be fine.

Seems like you have installed some of the files on external drive.
Do you have sent any bitcoins to the wallet that you are trying to open? If not, the smartest way would be to uninstall the application.
Please provide some more information, and if you have any private keys that you need on the wallet.dat and i'll help you to backup and restore them correctly to new installation of Bitcoin Core.

I read the debug log and it says that the disk I am using doesn't support 000001.dbtmp:

I was trying to use an external drive. obviously it doesn't work that way .

How can I change the drive?
I read the debug log and it says that the disk I am using doesn't support 000001.dbtmp:

I was trying to use an external drive. obviously it doesn't work that way .

How can I change the drive?

2018-02-26 14:12:57 Bitcoin Core version v0.16.0 (release build)
2018-02-26 14:12:57 InitParameterInteraction: parameter interaction: -whitelistforcerelay=1 -> setting -whitelistrelay=1
2018-02-26 14:12:58 Assuming ancestors of block 0000000000000000005214481d2d96f898e3d5416e43359c145944a909d242e0 have valid signatures.
2018-02-26 14:12:58 Setting nMinimumChainWork=000000000000000000000000000000000000000000f91c579d57cad4bc5278cc
2018-02-26 14:12:58 Using the 'sse4' SHA256 implementation
2018-02-26 14:12:58 Using RdRand as an additional entropy source
2018-02-26 14:12:58 Default data directory /Users/nikolayvladimirov/Library/Application Support/Bitcoin
2018-02-26 14:12:58 Using data directory /Volumes/USB_Storage
2018-02-26 14:12:58 Using config file /Volumes/USB_Storage/bitcoin.conf
2018-02-26 14:12:58 Using at most 125 automatic connections (2560 file descriptors available)
2018-02-26 14:12:58 Using 16 MiB out of 32/2 requested for signature cache, able to store 524288 elements
2018-02-26 14:12:58 Using 16 MiB out of 32/2 requested for script execution cache, able to store 524288 elements
2018-02-26 14:12:58 Using 2 threads for script verification
2018-02-26 14:12:58 scheduler thread start
2018-02-26 14:12:58 Using wallet directory /Volumes/USB_Storage
2018-02-26 14:12:58 init message: Verifying wallet(s)...
2018-02-26 14:12:58 Using BerkeleyDB version Berkeley DB 4.8.30: (April  9, 2010)
2018-02-26 14:12:58 Using wallet wallet.dat
2018-02-26 14:12:58 CDBEnv::Open: LogDir=/Volumes/USB_Storage/database ErrorFile=/Volumes/USB_Storage/db.log
2018-02-26 14:12:58 Cache configuration:
2018-02-26 14:12:58 * Using 2.0MiB for block index database
2018-02-26 14:12:58 * Using 8.0MiB for chain state database
2018-02-26 14:12:58 * Using 440.0MiB for in-memory UTXO set (plus up to 286.1MiB of unused mempool space)
2018-02-26 14:12:58 init message: Loading block index...
2018-02-26 14:12:59 Opening LevelDB in /Volumes/USB_Storage/blocks/index
2018-02-26 14:12:59 IO error: /Volumes/USB_Storage/blocks/index/000001.dbtmp: Operation not supported
2018-02-26 14:12:59 Database I/O error
2018-02-26 14:13:03 init message: Loading block index...
2018-02-26 14:13:03 Wiping LevelDB in /Volumes/USB_Storage/blocks/index
2018-02-26 14:13:03 Opening LevelDB in /Volumes/USB_Storage/blocks/index
2018-02-26 14:13:03 IO error: /Volumes/USB_Storage/blocks/index/000001.dbtmp: Operation not supported
2018-02-26 14:13:03 Database I/O error
2018-02-26 14:13:05 Shutdown: In progress...
2018-02-26 14:13:05 scheduler thread interrupt
2018-02-26 14:13:05 Shutdown: done

HI Jackg,
Thank you for your swift reply.

I am using Mac by the way. When I open debug.log it says: 2018-02-26 12:49:38

Can you post your debug.log?
How healthy is your hard drive/computer, how much space does your hard drive have free also?

Can you post your debug log as well. Presumably you're using Windows so by default it's c:\users\[yourusername]\appdata and in a folder named bitcoin either in the Roaming or Local subfolders of appdata.

HI Everyone,

I am new to bitcoin world and just wanted to support the network by downloading the full node on a dedicated Mac computer.

I knew it's going to be a steep learning curve especially for a non computer gig like myself and I was stuck right at the start.

When I try to open the bitcoin core application, it comes with a error message " error opening block database" " do you want to rebuilt the block database now"
I click ok and it comes wit " error opening database" and it closing the application. I have tried to delete the application and install again but I had no susses.

I would love to have someone give me an idea of how to tackle this problem.

Thank you for your time