Proposed changes as per review, to be squashed.

Author: fredericDelaporte

src/NHibernate/Dialect/Ingres9Dialect.cs

@@ -31,11 +31,15 @@ public override bool SupportsLimitOffset
 			get { return true; }
 		}
 
-		/// <summary>
-		/// Does this dialect support sequences?
-		/// </summary>
+		/// <inheritdoc />
 		public override bool SupportsSequences => true;
 
+		/// <inheritdoc />
+		public override bool SupportsPooledSequences => true;
+
+		/// <inheritdoc />
+		public override string QuerySequencesString => "select seq_name from iisequences";
+
 		/// <summary>
 		/// Attempts to add a <c>LIMIT</c> clause to the given SQL <c>SELECT</c>.
 		/// Expects any database-specific offset and limit adjustments to have already been performed (ex. UseMaxForLimit, OffsetStartsAtOne).
@@ -70,21 +74,25 @@ public override SqlString GetLimitString(SqlString queryString, SqlString offset
 			return pagingBuilder.ToSqlString();
 		}
 
+		/// <inheritdoc />
 		public override string GetSequenceNextValString(string sequenceName)
 		{
 			return "select " + GetSelectSequenceNextValString(sequenceName) + " as seq";
 		}
 
+		/// <inheritdoc />
 		public override string GetSelectSequenceNextValString(string sequenceName)
 		{
 			return "next value for " + sequenceName;
 		}
 
+		/// <inheritdoc />
 		public override string GetCreateSequenceString(string sequenceName)
 		{
 			return "create sequence " + sequenceName;
 		}
 
+		/// <inheritdoc />
 		public override string GetDropSequenceString(string sequenceName)
 		{
 			return "drop sequence " + sequenceName;