Do you have experience in detecting and preventing deadlocks in database management systems?

Deadlocks in DBMS occur when two or more processes wait for each other to release resources, leading to an infinite wait. The following approaches are used to detect and prevent them:

• Monitoring locks: Using system views or DBMS tools (e.g., sp_who2, sys.dm_tran_locks in SQL Server) to detect locks.
• Analyzing and optimizing transactions: Minimizing lock holding time, ordering resource access consistently.
• Using timeouts: Interrupting transactions that wait too long for locks.
• Applying isolation levels: Choosing appropriate isolation levels to reduce the likelihood of deadlocks.

Example in C# using transactions and exception handling to prevent deadlocks:

using (var transaction = connection.BeginTransaction())
{
    try
    {
        // database operations
        transaction.Commit();
    }
    catch (SqlException ex) when (ex.Number == 1205) // Deadlock
    {
        // Retry logic or rollback
    }
}