Is there a maximum length for a query text in OracleCommand.CommandText?

Question

I am querying a Oracle Database (version 9 or 10) from C# using the OracleCommand class.

String query = GetQuery(); //may produce quite lenghty queries...
OracleCommand command = connection.CreateCommand();
command.CommandText = query;
command.CommandType = CommandType.Text;

This class is in the Oracle.DataAccess.Client namespace in Oracle.DataAccess.dll (version "10.2.0.100"), which is from Oracle, not Microsoft. It's quite old, as I learned, but I do not like to change, if there is no need.

My concern is, is there a maximum length for this query string? Is there a limit either by that class or by the underlying Oracle Database?

Note: I am familiar with Microsoft SQL server, but very new to Oracle. Also I did look for docs but Google was not much of a help for this detail this time.

Answer 1

Oracle9i Database Reference states a limit on sql statement length:

64 K maximum; particular tools may impose lower limits

Similar page on 11g doesn't declare precise limitation, though:

The limit on how long a SQL statement can be depends on many factors, including database configuration, disk space, and memory

I believe we can be sure that 10 and 11 versions of oracle database support 64k queries.

Docs for OracleCommand class do not introduce any exceptions or constraints on CommandText length.