diff --git a/MGR.CommandLineParser.sln b/MGR.CommandLineParser.sln
index cdcb309..8da17ab 100644
--- a/MGR.CommandLineParser.sln
+++ b/MGR.CommandLineParser.sln
@@ -41,6 +41,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "MGR.CommandLineParser.Hosti
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "docs", "docs\docs.csproj", "{405858FA-1E78-48C7-9915-B558D0F15CAE}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MGR.CommandLineParser.Command.OracleProcedure", "src\MGR.CommandLineParser.Command.OracleProcedure\MGR.CommandLineParser.Command.OracleProcedure.csproj", "{738CC3C0-16C1-45FB-B1D0-A21E8FA9D7D9}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -79,6 +81,10 @@ Global
 		{405858FA-1E78-48C7-9915-B558D0F15CAE}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{405858FA-1E78-48C7-9915-B558D0F15CAE}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{405858FA-1E78-48C7-9915-B558D0F15CAE}.Release|Any CPU.Build.0 = Release|Any CPU
+		{738CC3C0-16C1-45FB-B1D0-A21E8FA9D7D9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{738CC3C0-16C1-45FB-B1D0-A21E8FA9D7D9}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{738CC3C0-16C1-45FB-B1D0-A21E8FA9D7D9}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{738CC3C0-16C1-45FB-B1D0-A21E8FA9D7D9}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -92,6 +98,7 @@ Global
 		{9F5A0142-E0A1-45A2-961E-55611B4440AD} = {FB795A12-C939-492F-9377-4C468D01EF3C}
 		{40EAA8E2-7AFE-4ED1-A961-35BD7E424985} = {FB795A12-C939-492F-9377-4C468D01EF3C}
 		{405858FA-1E78-48C7-9915-B558D0F15CAE} = {172E24C2-BF99-4DA9-A7DF-8C0BB44C138D}
+		{738CC3C0-16C1-45FB-B1D0-A21E8FA9D7D9} = {FB795A12-C939-492F-9377-4C468D01EF3C}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {827031C5-AE76-4B4C-9503-E13F15B497E9}
diff --git a/docs/procedure/oracle/index.md b/docs/procedure/oracle/index.md
new file mode 100644
index 0000000..ca28fa6
--- /dev/null
+++ b/docs/procedure/oracle/index.md
@@ -0,0 +1,7 @@
+# Use Oracle procedure commands
+
+You can use stored procedure from Oracle database to represent your commands.
+
+This allow you to call stored procedures via the parser
+(to create command-line or web-based tool).
+
diff --git a/src/MGR.CommandLineParser.Command.OracleProcedure/CommandMetadata.cs b/src/MGR.CommandLineParser.Command.OracleProcedure/CommandMetadata.cs
new file mode 100644
index 0000000..58a60f7
--- /dev/null
+++ b/src/MGR.CommandLineParser.Command.OracleProcedure/CommandMetadata.cs
@@ -0,0 +1,23 @@
+using MGR.CommandLineParser.Extensibility.Command;
+
+namespace MGR.CommandLineParser.Command.OracleProcedure
+{
+    internal class CommandMetadata : ICommandMetadata
+    {
+        public CommandMetadata(string name)
+        {
+            Name = name;
+            Description = name;
+            Samples = new string[0];
+        }
+        public string Name { get; }
+
+        public string Description { get; }
+
+        public string Usage => string.Empty;
+
+        public string[] Samples { get; }
+
+        public bool HideFromHelpListing => false;
+    }
+}
diff --git a/src/MGR.CommandLineParser.Command.OracleProcedure/CommandObjectBuilder.cs b/src/MGR.CommandLineParser.Command.OracleProcedure/CommandObjectBuilder.cs
new file mode 100644
index 0000000..a7ce960
--- /dev/null
+++ b/src/MGR.CommandLineParser.Command.OracleProcedure/CommandObjectBuilder.cs
@@ -0,0 +1,42 @@
+using System;
+using System.Collections.Generic;
+using System.Data.Common;
+using MGR.CommandLineParser.Extensibility.Command;
+
+namespace MGR.CommandLineParser.Command.OracleProcedure
+{
+    internal class CommandObjectBuilder : ICommandObjectBuilder
+    {
+        private IEnumerable<ICommandOptionMetadata> _options;
+        private IEnumerable<Parameter> _outParameters;
+        private DbConnection _dbConnection;
+
+        public CommandObjectBuilder(IEnumerable<ICommandOptionMetadata> options, IEnumerable<Parameter> outParameters, DbConnection dbConnection)
+        {
+            _options = options;
+            _outParameters = outParameters;
+            _dbConnection = dbConnection;
+        }
+
+        public void AddArguments(string argument) => throw new NotImplementedException("Oracle procedures does not define unamed arguments");
+        public ICommandOption FindOption(string optionName)
+        {
+            throw new NotImplementedException();
+        }
+
+        public ICommandOption FindOptionByShortName(string optionShortName)
+        {
+            throw new NotImplementedException($"Oracle procedures does not define 'short name' for the parameters ('{ optionShortName }')");
+        }
+
+        public ICommandObject GenerateCommandObject()
+        {
+            throw new NotImplementedException();
+        }
+
+        public CommandValidationResult Validate(IServiceProvider serviceProvider)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}
diff --git a/src/MGR.CommandLineParser.Command.OracleProcedure/CommandOption.cs b/src/MGR.CommandLineParser.Command.OracleProcedure/CommandOption.cs
new file mode 100644
index 0000000..64783f6
--- /dev/null
+++ b/src/MGR.CommandLineParser.Command.OracleProcedure/CommandOption.cs
@@ -0,0 +1,14 @@
+using System;
+using MGR.CommandLineParser.Extensibility.Command;
+
+namespace MGR.CommandLineParser.Command.OracleProcedure
+{
+    internal class CommandOption : ICommandOption
+    {
+        public bool ShouldProvideValue => throw new NotImplementedException();
+
+        public ICommandOptionMetadata Metadata => throw new NotImplementedException();
+
+        public void AssignValue(string optionValue) => throw new NotImplementedException();
+    }
+}
diff --git a/src/MGR.CommandLineParser.Command.OracleProcedure/CommandOptionMetadata.cs b/src/MGR.CommandLineParser.Command.OracleProcedure/CommandOptionMetadata.cs
new file mode 100644
index 0000000..a705c96
--- /dev/null
+++ b/src/MGR.CommandLineParser.Command.OracleProcedure/CommandOptionMetadata.cs
@@ -0,0 +1,21 @@
+using MGR.CommandLineParser.Extensibility.Command;
+
+namespace MGR.CommandLineParser.Command.OracleProcedure
+{
+    internal class CommandOptionMetadata : ICommandOptionMetadata
+    {
+        public CommandOptionMetadata(OptionDisplayInfo displayInfo, bool isRequired, string defaultValue)
+        {
+            DisplayInfo = displayInfo;
+            IsRequired = isRequired;
+            DefaultValue = defaultValue;
+        }
+        public bool IsRequired { get; }
+
+        public CommandOptionCollectionType CollectionType => CommandOptionCollectionType.None;
+
+        public IOptionDisplayInfo DisplayInfo { get; }
+
+        public string DefaultValue { get; }
+    }
+}
\ No newline at end of file
diff --git a/src/MGR.CommandLineParser.Command.OracleProcedure/CommandType.cs b/src/MGR.CommandLineParser.Command.OracleProcedure/CommandType.cs
new file mode 100644
index 0000000..321d151
--- /dev/null
+++ b/src/MGR.CommandLineParser.Command.OracleProcedure/CommandType.cs
@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using System.Data.Common;
+using MGR.CommandLineParser.Extensibility.Command;
+
+namespace MGR.CommandLineParser.Command.OracleProcedure
+{
+    internal class CommandType : ICommandType
+    {
+        private readonly IEnumerable<Parameter> _outParameters;
+        private readonly DbConnection _dbConnection;
+
+        public CommandType(CommandMetadata commandMetadata, IEnumerable<CommandOptionMetadata> options, IEnumerable<Parameter> outParameters, DbConnection dbConnection)
+        {
+            Metadata = commandMetadata;
+            Options = options;
+            _outParameters = outParameters;
+            _dbConnection = dbConnection;
+        }
+        public ICommandMetadata Metadata { get; }
+
+        public IEnumerable<ICommandOptionMetadata> Options { get; }
+
+        public ICommandObjectBuilder CreateCommandObjectBuilder(IServiceProvider serviceProvider)
+        {
+            return new CommandObjectBuilder(Options, _outParameters, _dbConnection);
+        }
+    }
+}
diff --git a/src/MGR.CommandLineParser.Command.OracleProcedure/CommandTypeProvider.cs b/src/MGR.CommandLineParser.Command.OracleProcedure/CommandTypeProvider.cs
new file mode 100644
index 0000000..4789275
--- /dev/null
+++ b/src/MGR.CommandLineParser.Command.OracleProcedure/CommandTypeProvider.cs
@@ -0,0 +1,51 @@
+using System.Collections.Generic;
+using System.Data.Common;
+using System.Linq;
+using System.Threading.Tasks;
+using MGR.CommandLineParser.Extensibility.Command;
+using Microsoft.EntityFrameworkCore;
+
+namespace MGR.CommandLineParser.Command.OracleProcedure
+{
+    internal class CommandTypeProvider : ICommandTypeProvider
+    {
+        private readonly OracleSystemContext _dbContext;
+
+        public CommandTypeProvider(OracleSystemContext dbContext)
+        {
+            _dbContext = dbContext;
+        }
+        public async Task<IEnumerable<ICommandType>> GetAllCommandTypes()
+        {
+            var procedures = await _dbContext.Procedures.Include(procedure => procedure.Parameters).ToListAsync();
+            return procedures.Select(procedure => MapProcedureToCommandType(procedure, _dbContext.Database.GetDbConnection()));
+        }
+        public async Task<ICommandType> GetCommandType(string commandName)
+        {
+            var procedure = await _dbContext.Procedures.Include(procedure => procedure.Parameters).Where(procedure => procedure.Name == commandName).SingleOrDefaultAsync();
+            if (procedure != null)
+            {
+                return MapProcedureToCommandType(procedure, _dbContext.Database.GetDbConnection());
+            }
+            return null;
+        }
+
+        private static CommandType MapProcedureToCommandType(Procedure procedure, DbConnection dbConnection)
+        {
+            return new CommandType(
+                new CommandMetadata(procedure.Name),
+                procedure.Parameters
+                    .Where(parameter => parameter.Direction.HasFlag(Direction.In))
+                    .Select(parameter => new CommandOptionMetadata(
+                                new OptionDisplayInfo(parameter.Name),
+                                !parameter.HasDefaultValue,
+                                parameter.DefaultValue
+                                )
+                    ),
+                procedure.Parameters
+                    .Where(parameter => parameter.Direction.HasFlag(Direction.Out)),
+                dbConnection
+                );
+        }
+    }
+}
diff --git a/src/MGR.CommandLineParser.Command.OracleProcedure/Direction.cs b/src/MGR.CommandLineParser.Command.OracleProcedure/Direction.cs
new file mode 100644
index 0000000..e5e7845
--- /dev/null
+++ b/src/MGR.CommandLineParser.Command.OracleProcedure/Direction.cs
@@ -0,0 +1,12 @@
+using System;
+
+namespace MGR.CommandLineParser.Command.OracleProcedure
+{
+    [Flags]
+    internal enum Direction
+    {
+        In = 1,
+        Out = 2,
+        InOut = 3
+    }
+}
\ No newline at end of file
diff --git a/src/MGR.CommandLineParser.Command.OracleProcedure/MGR.CommandLineParser.Command.OracleProcedure.csproj b/src/MGR.CommandLineParser.Command.OracleProcedure/MGR.CommandLineParser.Command.OracleProcedure.csproj
new file mode 100644
index 0000000..48524fa
--- /dev/null
+++ b/src/MGR.CommandLineParser.Command.OracleProcedure/MGR.CommandLineParser.Command.OracleProcedure.csproj
@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Oracle.EntityFrameworkCore" Version="2.19.80" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\MGR.CommandLineParser\MGR.CommandLineParser.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/src/MGR.CommandLineParser.Command.OracleProcedure/Mapping/ParameterMap.cs b/src/MGR.CommandLineParser.Command.OracleProcedure/Mapping/ParameterMap.cs
new file mode 100644
index 0000000..7e92179
--- /dev/null
+++ b/src/MGR.CommandLineParser.Command.OracleProcedure/Mapping/ParameterMap.cs
@@ -0,0 +1,44 @@
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+namespace MGR.CommandLineParser.Command.OracleProcedure.Mapping
+{
+    internal class ParameterMap : IEntityTypeConfiguration<Parameter>
+    {
+        public void Configure(EntityTypeBuilder<Parameter> builder)
+        {
+            builder.ToTable("USER_ARGUMENTS");
+
+            builder.Property(_ => _.Name)
+                .HasColumnName("OBJECT_NAME");
+
+            var defaultValueConverter = new BoolToStringConverter("N", "Y");
+            builder.Property(_ => _.HasDefaultValue)
+                .HasColumnName("DEFAULTED")
+                .HasConversion(defaultValueConverter);
+
+            builder.Property(_ => _.DefaultValue)
+                .HasColumnName("DEFAULT_VALUE");
+
+            builder.Property(_ => _.DataType)
+                .HasColumnName("DATA_TYPE");
+
+            var directionConverter = new ValueConverter<Direction, string>(
+                _ => _.ToString(),
+                value => ParseDirection(value));
+            builder.Property(_ => _.Direction)
+                .HasColumnName("IN_OUT")
+                .HasConversion(directionConverter);
+        }
+        private static Direction ParseDirection(string value) => value
+                switch
+        {
+            "IN" => Direction.In,
+            "OUT" => Direction.Out,
+            "IN/OUT" => Direction.InOut,
+            _ => throw new ArgumentOutOfRangeException(nameof(value))
+        };
+    }
+}
\ No newline at end of file
diff --git a/src/MGR.CommandLineParser.Command.OracleProcedure/Mapping/ProcedureMap.cs b/src/MGR.CommandLineParser.Command.OracleProcedure/Mapping/ProcedureMap.cs
new file mode 100644
index 0000000..9d4ac1b
--- /dev/null
+++ b/src/MGR.CommandLineParser.Command.OracleProcedure/Mapping/ProcedureMap.cs
@@ -0,0 +1,18 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+
+namespace MGR.CommandLineParser.Command.OracleProcedure.Mapping
+{
+    internal class ProcedureMap : IEntityTypeConfiguration<Procedure>
+    {
+        public void Configure(EntityTypeBuilder<Procedure> builder)
+        {
+            builder.ToTable("ALL_OBJETS");
+
+            builder.Property(_ => _.Name)
+                .HasColumnName("OBJECT_NAME");
+
+            builder.HasQueryFilter(_ => EF.Property<string>(_, "OBJECT_TYPE") == "PROCEDURE");
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/MGR.CommandLineParser.Command.OracleProcedure/OptionDisplayInfo.cs b/src/MGR.CommandLineParser.Command.OracleProcedure/OptionDisplayInfo.cs
new file mode 100644
index 0000000..deeb241
--- /dev/null
+++ b/src/MGR.CommandLineParser.Command.OracleProcedure/OptionDisplayInfo.cs
@@ -0,0 +1,22 @@
+using System.Collections.Generic;
+using System.Linq;
+using MGR.CommandLineParser.Extensibility.Command;
+
+namespace MGR.CommandLineParser.Command.OracleProcedure
+{
+    internal class OptionDisplayInfo : IOptionDisplayInfo
+    {
+        public OptionDisplayInfo(string name)
+        {
+            Name = name;
+            Description = name;
+        }
+        public string Name { get; }
+
+        public IEnumerable<string> AlternateNames => Enumerable.Empty<string>();
+
+        public string ShortName => string.Empty;
+
+        public string Description { get; }
+    }
+}
diff --git a/src/MGR.CommandLineParser.Command.OracleProcedure/OracleSystemContext.cs b/src/MGR.CommandLineParser.Command.OracleProcedure/OracleSystemContext.cs
new file mode 100644
index 0000000..fd6f8f5
--- /dev/null
+++ b/src/MGR.CommandLineParser.Command.OracleProcedure/OracleSystemContext.cs
@@ -0,0 +1,22 @@
+using MGR.CommandLineParser.Command.OracleProcedure.Mapping;
+using Microsoft.EntityFrameworkCore;
+
+namespace MGR.CommandLineParser.Command.OracleProcedure
+{
+    internal sealed class OracleSystemContext : DbContext
+    {
+        public DbSet<Procedure> Procedures { get; set; }
+
+        public OracleSystemContext(DbContextOptions<OracleSystemContext> options)
+            : base(options)
+        { }
+
+        protected override void OnModelCreating(ModelBuilder modelBuilder)
+        {
+            modelBuilder
+                .ApplyConfiguration(new ProcedureMap())
+                .ApplyConfiguration(new ParameterMap());
+            base.OnModelCreating(modelBuilder);
+        }
+    }
+}
diff --git a/src/MGR.CommandLineParser.Command.OracleProcedure/Parameter.cs b/src/MGR.CommandLineParser.Command.OracleProcedure/Parameter.cs
new file mode 100644
index 0000000..b8a4568
--- /dev/null
+++ b/src/MGR.CommandLineParser.Command.OracleProcedure/Parameter.cs
@@ -0,0 +1,11 @@
+namespace MGR.CommandLineParser.Command.OracleProcedure
+{
+    internal class Parameter
+    {
+        public string Name { get; set; }
+        public bool HasDefaultValue { get; set; }
+        public string DefaultValue { get; set; }
+        public string DataType { get; set; }
+        public Direction Direction { get; set; }
+    }
+}
\ No newline at end of file
diff --git a/src/MGR.CommandLineParser.Command.OracleProcedure/Procedure.cs b/src/MGR.CommandLineParser.Command.OracleProcedure/Procedure.cs
new file mode 100644
index 0000000..26f7d84
--- /dev/null
+++ b/src/MGR.CommandLineParser.Command.OracleProcedure/Procedure.cs
@@ -0,0 +1,10 @@
+using System.Collections.Generic;
+
+namespace MGR.CommandLineParser.Command.OracleProcedure
+{
+    internal class Procedure
+    {
+        public string Name { get; set; }
+        public IEnumerable<Parameter> Parameters { get; set; }
+    }
+}
\ No newline at end of file