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    <p>There are many resons why this comes up. Sometimes because we don't use the Oracle tools and sometimes because of incorrect gridview markup.</p> <p>since you do not require to update value of Column: <code>charge_id</code> , you cannot use a BoundField for the same unless you specify it in <code>DataKeyNames</code> property of <code>SqlDataSource</code>. </p> <p>A BoundField if not specified in <code>DataKeyNames</code> ,generates a bind variable which if not used in the update statement will result in ORA-01036. To avoid the error, either specify this field in <code>DataKeyNames</code> property OR change this to a TemplateField and use Eval.so two possible cases I forsee:</p> <p>1.) Set the <code>DataKeyNames</code> property of your SqlDataSource to <code>charge_id</code> . </p> <pre><code>&lt;asp:SqlDataSource ID="charges_gv_datasource" runat="server" ConnectionString="edited" ProviderName="System.Data.OracleClient" DataKeyNames="charge_id" SelectCommand="WITH relevant_ids AS (SELECT ir.result_id AS relevant_result_id FROM inspection_result_tbl ir) SELECT ir.charge_id, ....." UpdateCommand="UPDATE [charges_tbl] SET [CLAIM_VERIFICATION] = :claim_verification,..."&gt; </code></pre> <p>2.) If option 1 doesn't suits then :</p> <p>Seeing your markup, definitely you have your <code>&lt;EditItemTemplate&gt;</code> in place as you haven't shown the same for many of <code>&lt;asp:TemplateField&gt;</code> items.</p> <p>Make sure then you put your <code>charge_id</code> column in an <code>&lt;asp:TemplateField&gt;</code>. Use <code>&lt;asp:Lable&gt;</code> so it won't be changed even in edit mode.</p> <pre><code>&lt;asp:TemplateField HeaderText="charge_id" SortExpression="charge_id"&gt; &lt;EditItemTemplate&gt; &lt;asp:Label ID="Label1" runat="server" Text='&lt;%# Eval("charge_id") %&gt;'&gt;&lt;/asp:Label&gt; &lt;/EditItemTemplate&gt; &lt;ItemTemplate&gt; &lt;asp:Label ID="Label1" runat="server" Text='&lt;%# Bind("charge_id") %&gt;'&gt;&lt;/asp:Label&gt; &lt;/ItemTemplate&gt; &lt;/asp:TemplateField&gt; </code></pre> <p><strong>Seeing the Stack Trace provided Later On,</strong> : Better to Use Oracle Developer Tools (ODT) for VS and ODP.NET since they are better integrated with .NET and Oracle.</p> <p><code>ODP.NET</code> uses <code>Oracle.DataAccess.Client</code> namespace. <code>System.Data.OracleClient</code> belongs to the MS provider for Oracle. The connection string in the <code>web.config</code> needs to use the <code>Oracle.DataAccess.Client</code> as shown below:</p> <pre><code>&lt;connectionStrings&gt; &lt;add name="ConnectionString1" connectionString="Data Source=192.168.1.104/orcl;Persist Security Info=True;User ID=system;Password=xxxxxx;" providerName="Oracle.DataAccess.Client" /&gt; &lt;/connectionStrings&gt; </code></pre> <p>Go through this complete post for your reference: <a href="https://forums.oracle.com/message/2368331?#2366331http://forums.oracle.com/forums/thread.jspa?threadID=62196" rel="nofollow">https://forums.oracle.com/message/2368331?#2366331http://forums.oracle.com/forums/thread.jspa?threadID=62196</a> </p>
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    1. POUPDATE gridview row error
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    1. COI tried option 2 as it would not allow me to enter a datakeynames field in the sqldatasource. I changed the bound field to a template field and I'm still getting the same error.
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    2. COShow your markup where you defined the new templatefield
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    3. COUpdated the first post with new gridview code.
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