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Null reference when calling SaveChangesAsync method using transaction scope - Distributed transaction - Oracle and MSSQL

2

``` public class DistributedTransaction{ OracleDbContext _oracleDbContext; MsSqlDbContext _msSqlDbContext; public DistributedTransaction(OracleDbContext oracleDbContext, MsSqlDbContext msSqlDbContext) { _oracleDbContext = oracleDbContext; _msSqlDbContext = msSqlDbContext; } public async Task ExecuteAsync(){ using var scope = new...