Error Message Explanation and Solution
The error message provided is likely due to a conflict between Bitcoin-Qt (Bitcoin Core) and another program or service running on the same system. When two processes try to access the same file system resources simultaneously, conflicts can arise.
In your case, it appears that bitcoin-qt or one of its components, such as the SQL database, is trying to access a shared directory (c:\data\bitcoin-qt -wallet=c:\dir\wal -datadir=c:\btcdata\) or another shared directory (c:\data\bitcoin-qt -wallet=c:\dir\wal2\ -datadir=c:\btcdata2\).
Solution:
To resolve this issue, you need to ensure that bitcoin-qt and the SQL database are running in different directories. Here is a step-by-step solution:
- Create separate directories for each Bitcoin Core wallet:
mkdir c:\dir\wal
mkdir c:\dir\wal2
This will create two new directories: c:\dir\wal and c:\dir\wal2. You can use these as the -wallet options when starting bitcoin-qt.
- Run each Bitcoin Core wallet in its own directory:
bitcoin-qt -wallet=c:\dir\wal -datadir=c:\btcdata\
bitcoin-qt -wallet=c:\dir\wal2\ -datadir=c:\btcdata2\
This will ensure that the SQL database is using a different shared directory for each wallet.
- Verify that both wallets are running successfully:
bitcoin-qt -version
bitcoin-qt2 -version
If you still encounter issues, try to identify which process is causing the conflict and remove it or temporarily disable it. You can use tasklist or process explorer to identify the conflicting process.
Alternatively, you can also try creating a separate log file for each Bitcoin Core wallet by adding the -logdir option:
bitcoin-qt -wallet=c:\dir\wal -datadir=c:\btcdata/ -logdir=C:\logs\bitcoin-qt-logs
This will create separate logs for each wallet in the C:\logs\bitcoin-qt-logs directory.
By following these steps, you should be able to resolve the conflict and launch your Bitcoin Core wallets without any issues related to accessing the shared directory.