oracle provider: add context help

resources/context_help/QgsOracleNewConnection-en_US

@@ -0,0 +1,36 @@
+<h3>Create a New Oracle Connection</h3>
+This dialog allows you to define the settings for a connection to a Oracle database.
+<p>
+<ul>
+<li> <label>Name</label> A name to identify the connection settings.
+
+<li> <label>Database</label> SID or SERVICE_NAME of the Oracle instance.
+
+<li> <label>Host</label> Name or IP address of the computer hosting the database server
+
+<li> <label>Port</label> IP port used by the database server
+
+<li> <label>Username</label> Database user name.
+<li> <label>Password</label> Database password.
+
+<li> <label>Save Username</label> Indicates whether to save the database user name in the connection configuration.
+
+<li> <label>Save Password</label> Indicates whether to save the database password in the connection settings.  <font color="red">Passwords are saved in <strong>clear text</strong> in the system configuration and in the project files!</font>
+
+<li> <label>Only look in meta data table</label> Restricts the displayed tables to those that are in the all_sdo_geom_metadata view. This can speed up the initial display of spatial tables.
+
+<li> <label>Only look for user's tables</label> When searching for spatial tables restrict the search to tables that are owner by the user.
+
+<li> <label>Also list tables with no geometry</label>  Indicates that tables without geometry should also be listed by default.
+
+<li> <label>Use estimated table statistics for the layer metadata</label> When
+the layer is setup various metadata is required for the Oracle table. This
+includes information such as the table row count, geometry type and spatial
+extents of the data in the geometry column. If the table contains a large
+number of rows determining this metadata is time consuming. By activating this
+option the following fast table metadata operations are done: Row count is
+determined from all_tables.num_rows. Table extents are always determined with
+the SDO_TUNE.EXTENTS_OF function even if a layer filter is applied. The table
+geometry is determined from the first 100 non-null geometry rows in the table.
+
+</ul>

src/ui/qgsoraclenewconnectionbase.ui

@@ -112,7 +112,7 @@
       <item row="8" column="0" colspan="3">
        <widget class="QCheckBox" name="cb_geometryColumnsOnly">
         <property name="toolTip">
-         <string>Restrict the displayed tables to those that are in the geometry_columns table</string>
+         <string>Restrict the displayed tables to those that are in the all_sdo_geom_metadata table</string>
         </property>
         <property name="whatsThis">
          <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Restricts the displayed tables to those that are in the all_sdo_geom_metadata view. This can speed up the initial display of spatial tables.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
@@ -125,10 +125,10 @@
       <item row="9" column="0" colspan="3">
        <widget class="QCheckBox" name="cb_userTablesOnly">
         <property name="toolTip">
-         <string>Restrict the search to the public schema for spatial tables not in the geometry_columns table</string>
+         <string>When searching for spatial tables restrict the search to tables that are owned by the user.</string>
         </property>
         <property name="whatsThis">
-         <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;When searching for spatial tables restrict the search to tables that are owner by the user.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+         <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;When searching for spatial tables restrict the search to tables that are owned by the user.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
         </property>
         <property name="text">
          <string>Only look for user's tables</string>