Set decimal 1GB default LOB prefetch

Author: Michael-A-McMahon

src/test/java/oracle/r2dbc/impl/OracleReactiveJdbcAdapterTest.java

@@ -784,7 +784,7 @@ private static Properties getJdbcDefaultProperties() throws SQLException {
       OracleConnection.CONNECTION_PROPERTY_IMPLICIT_STATEMENT_CACHE_SIZE, "25");
     defaultProperties.setProperty(
       OracleConnection.CONNECTION_PROPERTY_DEFAULT_LOB_PREFETCH_SIZE,
-      "1073741824");
+      "1000000000");
     defaultProperties.setProperty(
       OracleConnection.CONNECTION_PROPERTY_THIN_NET_USE_ZERO_COPY_IO,
       "false");