Getting error "ORA-00928" when trying to context.BulkCopy

Hey!

I just discovered linq2db and linq2db.EntityFramwrokCore while searching for a Bulk Insert option that would work with EF Core 3.1 and Oracle. At first I was a bit skeptical of it being so simple to work with. Now I think I may be missing something, because it’s not working for me.

Ok, so I have a collection of <FlatConsult> entity that I need to upsert into my Oracle (19c) database. This is the code:

LinqToDBForEFTools.Initialize();
List<FlatConsult> data = GetData();
dwDb.BulkCopy(new BulkCopyOptions 
{ 
    BulkCopyType = OracleTools.DefaultBulkCopyType, 
    TableName = "ST.\"FlatConsults\"" 
}, data);

I had to specify the table name otherwise I would get a “ORA-00942: table or view does not exist” error. But now I keep getting a “ORA-00928: missing SELECT keyword” error:

Oracle.ManagedDataAccess.Client.OracleException (0x80004005): ORA-00928: palavra-chave SELECT não encontrada
   em OracleInternal.ServiceObjects.OracleConnectionImpl.VerifyExecution(Int32& cursorId, Boolean bThrowArrayBindRelatedErrors, SqlStatementType sqlStatementType, Int32 arrayBindCount, OracleException& exceptionForArrayBindDML, Boolean& hasMoreRowsInDB, Boolean bFirstIterationDone)
   em OracleInternal.ServiceObjects.OracleCommandImpl.ExecuteNonQuery(String commandText, OracleParameterCollection paramColl, CommandType commandType, OracleConnectionImpl connectionImpl, Int32 longFetchSize, Int64 clientInitialLOBFS, OracleDependencyImpl orclDependencyImpl, Int64[]& scnFromExecution, OracleParameterCollection& bindByPositionParamColl, Boolean& bBindParamPresent, OracleException& exceptionForArrayBindDML, OracleConnection connection, OracleLogicalTransaction& oracleLogicalTransaction, Boolean isFromEF)
   em Oracle.ManagedDataAccess.Client.OracleCommand.ExecuteNonQuery()
   em LinqToDB.Data.DataConnection.ExecuteNonQuery(IDbCommand command) na D:\a\1\s\Source\LinqToDB\Data\DataConnection.cs:linha 1256
   em LinqToDB.Data.DataConnection.ExecuteNonQuery() na D:\a\1\s\Source\LinqToDB\Data\DataConnection.cs:linha 1261
   em LinqToDB.Data.CommandInfo.Execute() na D:\a\1\s\Source\LinqToDB\Data\CommandInfo.cs:linha 863
   em LinqToDB.DataProvider.MultipleRowsHelper.Execute() na D:\a\1\s\Source\LinqToDB\DataProvider\MultipleRowsHelper.cs:linha 100
   em LinqToDB.DataProvider.BasicBulkCopy.MultipleRowsCopyHelper(MultipleRowsHelper helper, IEnumerable source, String from, Action`1 prepFunction, Action`3 addFunction, Action`1 finishFunction, Int32 maxParameters, Int32 maxSqlLength) na D:\a\1\s\Source\LinqToDB\DataProvider\BasicBulkCopy.cs:linha 279
   em LinqToDB.DataProvider.Oracle.OracleBulkCopy.OracleMultipleRowsCopy1(MultipleRowsHelper helper, IEnumerable source) na D:\a\1\s\Source\LinqToDB\DataProvider\Oracle\OracleBulkCopy.cs:linha 186
   em LinqToDB.DataProvider.Oracle.OracleBulkCopy.MultipleRowsCopy[T](ITable`1 table, BulkCopyOptions options, IEnumerable`1 source) na D:\a\1\s\Source\LinqToDB\DataProvider\Oracle\OracleBulkCopy.cs:linha 126
   em LinqToDB.DataProvider.BasicBulkCopy.BulkCopy[T](BulkCopyType bulkCopyType, ITable`1 table, BulkCopyOptions options, IEnumerable`1 source) na D:\a\1\s\Source\LinqToDB\DataProvider\BasicBulkCopy.cs:linha 21
   em LinqToDB.DataProvider.Oracle.OracleDataProvider.BulkCopy[T](ITable`1 table, BulkCopyOptions options, IEnumerable`1 source) na D:\a\1\s\Source\LinqToDB\DataProvider\Oracle\OracleDataProvider.cs:linha 300
   em LinqToDB.Data.DataConnectionExtensions.BulkCopy[T](DataConnection dataConnection, BulkCopyOptions options, IEnumerable`1 source) na D:\a\1\s\Source\LinqToDB\Data\DataConnectionExtensions.cs:linha 2194
   em LinqToDB.EntityFrameworkCore.LinqToDBForEFTools.BulkCopy[T](DbContext context, BulkCopyOptions options, IEnumerable`1 source) na D:\a\1\s\Source\LinqToDB.EntityFrameworkCore\LinqToDBForEFTools.ContextExtensions.cs:linha 32
   em Mantic.BlackOps.Jobs.Maintenance.Utils.FlatConsultsProcessor.<UpdateConsultsAsync>d__5.MoveNext() na C:\Repos\Tekap.Mantic.BlackOps\Mantic.BlackOps.Jobs.Maintenance\Utils\FlatConsultsProcessor.cs:linha 116
--- Fim do rastreamento de pilha do local anterior onde a exceção foi gerada ---
   em System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   em System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   em System.Runtime.CompilerServices.TaskAwaiter.GetResult()
   em Mantic.BlackOps.Jobs.Maintenance.Jobs.FlatConsultsJob.<OrchestrateAsync>d__6.MoveNext() na C:\Repos\Tekap.Mantic.BlackOps\Mantic.BlackOps.Jobs.Maintenance\Jobs\FlatConsultsJob.cs:linha 79
[12:28:02 WRN T09] Failed to process the job '1': an exception occurred. Retry attempt 1 of 3 will be performed in 00:00:33. (Hangfire.AutomaticRetryAttribute)
Oracle.ManagedDataAccess.Client.OracleException (0x80004005): ORA-00928: palavra-chave SELECT não encontrada
   em OracleInternal.ServiceObjects.OracleConnectionImpl.VerifyExecution(Int32& cursorId, Boolean bThrowArrayBindRelatedErrors, SqlStatementType sqlStatementType, Int32 arrayBindCount, OracleException& exceptionForArrayBindDML, Boolean& hasMoreRowsInDB, Boolean bFirstIterationDone)
   em OracleInternal.ServiceObjects.OracleCommandImpl.ExecuteNonQuery(String commandText, OracleParameterCollection paramColl, CommandType commandType, OracleConnectionImpl connectionImpl, Int32 longFetchSize, Int64 clientInitialLOBFS, OracleDependencyImpl orclDependencyImpl, Int64[]& scnFromExecution, OracleParameterCollection& bindByPositionParamColl, Boolean& bBindParamPresent, OracleException& exceptionForArrayBindDML, OracleConnection connection, OracleLogicalTransaction& oracleLogicalTransaction, Boolean isFromEF)
   em Oracle.ManagedDataAccess.Client.OracleCommand.ExecuteNonQuery()
   em LinqToDB.Data.DataConnection.ExecuteNonQuery(IDbCommand command) na D:\a\1\s\Source\LinqToDB\Data\DataConnection.cs:linha 1256
   em LinqToDB.Data.DataConnection.ExecuteNonQuery() na D:\a\1\s\Source\LinqToDB\Data\DataConnection.cs:linha 1261
   em LinqToDB.Data.CommandInfo.Execute() na D:\a\1\s\Source\LinqToDB\Data\CommandInfo.cs:linha 863
   em LinqToDB.DataProvider.MultipleRowsHelper.Execute() na D:\a\1\s\Source\LinqToDB\DataProvider\MultipleRowsHelper.cs:linha 100
   em LinqToDB.DataProvider.BasicBulkCopy.MultipleRowsCopyHelper(MultipleRowsHelper helper, IEnumerable source, String from, Action`1 prepFunction, Action`3 addFunction, Action`1 finishFunction, Int32 maxParameters, Int32 maxSqlLength) na D:\a\1\s\Source\LinqToDB\DataProvider\BasicBulkCopy.cs:linha 279
   em LinqToDB.DataProvider.Oracle.OracleBulkCopy.OracleMultipleRowsCopy1(MultipleRowsHelper helper, IEnumerable source) na D:\a\1\s\Source\LinqToDB\DataProvider\Oracle\OracleBulkCopy.cs:linha 186
   em LinqToDB.DataProvider.Oracle.OracleBulkCopy.MultipleRowsCopy[T](ITable`1 table, BulkCopyOptions options, IEnumerable`1 source) na D:\a\1\s\Source\LinqToDB\DataProvider\Oracle\OracleBulkCopy.cs:linha 126
   em LinqToDB.DataProvider.BasicBulkCopy.BulkCopy[T](BulkCopyType bulkCopyType, ITable`1 table, BulkCopyOptions options, IEnumerable`1 source) na D:\a\1\s\Source\LinqToDB\DataProvider\BasicBulkCopy.cs:linha 21
   em LinqToDB.DataProvider.Oracle.OracleDataProvider.BulkCopy[T](ITable`1 table, BulkCopyOptions options, IEnumerable`1 source) na D:\a\1\s\Source\LinqToDB\DataProvider\Oracle\OracleDataProvider.cs:linha 300
   em LinqToDB.Data.DataConnectionExtensions.BulkCopy[T](DataConnection dataConnection, BulkCopyOptions options, IEnumerable`1 source) na D:\a\1\s\Source\LinqToDB\Data\DataConnectionExtensions.cs:linha 2194
   em LinqToDB.EntityFrameworkCore.LinqToDBForEFTools.BulkCopy[T](DbContext context, BulkCopyOptions options, IEnumerable`1 source) na D:\a\1\s\Source\LinqToDB.EntityFrameworkCore\LinqToDBForEFTools.ContextExtensions.cs:linha 32
   em Mantic.BlackOps.Jobs.Maintenance.Utils.FlatConsultsProcessor.<UpdateConsultsAsync>d__5.MoveNext() na C:\Repos\Tekap.Mantic.BlackOps\Mantic.BlackOps.Jobs.Maintenance\Utils\FlatConsultsProcessor.cs:linha 116
--- Fim do rastreamento de pilha do local anterior onde a exceção foi gerada ---
   em System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   em System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   em System.Runtime.CompilerServices.TaskAwaiter.GetResult()
   em Mantic.BlackOps.Jobs.Maintenance.Jobs.FlatConsultsJob.<OrchestrateAsync>d__6.MoveNext() na C:\Repos\Tekap.Mantic.BlackOps\Mantic.BlackOps.Jobs.Maintenance\Jobs\FlatConsultsJob.cs:linha 88
--- Fim do rastreamento de pilha do local anterior onde a exceção foi gerada ---
   em System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   em System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   em System.Runtime.CompilerServices.TaskAwaiter.GetResult()
   em Mantic.BlackOps.Jobs.Maintenance.Jobs.FlatConsultsJob.<>c__DisplayClass5_0.<<Start>b__0>d.MoveNext() na C:\Repos\Tekap.Mantic.BlackOps\Mantic.BlackOps.Jobs.Maintenance\Jobs\FlatConsultsJob.cs:linha 41
--- Fim do rastreamento de pilha do local anterior onde a exceção foi gerada ---
   em System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   em System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   em System.Runtime.CompilerServices.TaskAwaiter.GetResult()
   em Mantic.BlackOps.Jobs.Maintenance.Jobs.FlatConsultsJob.<Start>d__5.MoveNext() na C:\Repos\Tekap.Mantic.BlackOps\Mantic.BlackOps.Jobs.Maintenance\Jobs\FlatConsultsJob.cs:linha 40

I even added linq2db.Oracle.Managed to see if it would help, but no success. I’m probably missing some more configuration, but I couldn’t find any help on it.

And thank you for your work!

[lhmiranda]

It might solve this. It actually states in it’s description that it should be set to false. I’ll test it and report back shortly.

Edit: yep, that did it. Everything seems to be working as intended now. I don’t even have to define table or schema names in BulkCopyOptions anymore.

Thank you all for your time and support!

[MaceWindu]

Could you try and set

OracleTools.DontEscapeLowercaseIdentifiers = false;

option? I wonder why we have it set to true by default.