How to Upgradeor on shut down the coin client using the -detatchdb comas coins use both log and dat files with berkeley.
If you are running an older version, shut it down. Wait until it has completely shut down (which might take a few minutes for older versions), then run the installer (on Windows) or just copy over /Applications/Bitcoin-Qt (on Mac) or bitcoind/bitcoin-qt (on Linux).
If you were running on Linux with a version that might have been compiled with a different version of Berkeley DB (for example, if you were using an Ubuntu PPA version), then run the old version again with the -detachdb argument and shut it down; if you do not, then the new version will not be able to read the database files and will exit with an error.
Explanation of -detachdb (and the new “stop true” RPC command): The Berkeley DB database library stores data in both “.dat” and “log” files, so the database is always in a consistent state, even in case of power failure or other sudden shutdown. The format of the “.dat” files is portable between different versions of Berkeley DB, but the “log” files are not– even minor version differences may have incompatible “log” files. The -detachdb option moves any pending changes from the “log” files to the “blkindex.dat” file for maximum compatibility, but makes shutdown much slower. Note that the “wallet.dat” file is always detached, and versions prior to 0.6.0 detached all databases at shutdown.
VergeQt 4.0.1 fork for stealth / Mac OS High Sierra Instructions if not working. 1.Backup your wallet.dat file to a safe place, found in: go,library,application support,Verge. 2.Now go to Finder bottom left corner, type terminal, open terminal. 3.copy & paste: xcode-select —install 4.press enter 5.install this then back onto terminal 6.copy & paste: ruby -e "$(curl -fsSL https://raw The files blk001.dat and blkindex.dat. Then restart the client. It will have to re sync from peers and it will recreate the index. Alternatively. You can remove blkindex.dat and rename the blk001.dat to bootstrap.dat , and then restart the client. It will use the bootstrap to create a new blk001.dat and blkindex.dat. This works about 50% of the EXCEPTION: 11DbException Db::open: Invalid argument bitcoin in Runaway exception. Bitcoin version v0.7.1-beta (2012-10-09 13:22:09 -0400) Using OpenSSL version OpenSSL 0.9.8k 25 Mar 2009 im using win fista home premium when i start bitcoing i get error msg windows saying, error loading blkindex.dat, when i hit ok: bitcoin-qt.exe has toped working, msg The -detachdb option moves any pending changes from the “log” files to the “blkindex.dat” file for maximum compatibility, but makes shutdown much slower. Note that the “wallet.dat” file is always detached, and versions prior to 0.6.0 detached all databases at shutdown. Bug fixes. Prevent RPC move from deadlocking. This was caused by
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