Request Error

nsoracle.c:3904:ora_tcl_command: error in `OCIStmtExecute ()': ORA-24324: service handle not initialized

SQL: 
SELECT /*+ first_rows */
outgoing, 
CASE WHEN LOWER(:url) LIKE LOWER(outgoing) || '%' THEN 1 ELSE 0 END as recursive,
is_exact
FROM wg_redirect_mview
WHERE LOWER(incoming) = LOWER(:checkurl) AND
      (sysdate BETWEEN NVL(start_date,sysdate-1) AND NVL(end_date,sysdate+1)) AND
      rownum = 1
    while executing
"ns_ora 0or1row nsdb0 {
SELECT /*+ first_rows */
outgoing, 
CASE WHEN LOWER(:url) LIKE LOWER(outgoing) || '%' THEN 1 ELSE 0 END as recursive,
is_exact
..."
    ("uplevel" body line 1)
    invoked from within
"uplevel 2 [list ns_ora $type $db $sql] $args"
    invoked from within
"db_exec 0or1row $db $statement_name $sql"
    invoked from within
"set selection [db_exec 0or1row $db $statement_name $sql]"
    ("uplevel" body line 2)
    invoked from within
"uplevel 1 $code_block "
    invoked from within
"db_with_handle db {
	set selection [db_exec 0or1row $db $statement_name $sql]
    }"
    (procedure "db_0or1row" line 19)
    invoked from within
"db_0or1row get_redirect "
SELECT /*+ first_rows */
outgoing, 
CASE WHEN LOWER(:url) LIKE LOWER(outgoing) || '%' THEN 1 ELSE 0 END as recursive,
is_exa..."
    ("for" body line 22)
    invoked from within
"for {set loopindex $l} {$loopindex >= 0 } {incr loopindex -1} {

	set checkurl ""


	#
	# build a url from the first element to the current element
	#..."
    (file "/web/wgbh/www/wgbh/index.vuh" line 19)
    invoked from within
"source [ad_conn file]"
    (procedure "rp_handle_tcl_request" line 3)
    invoked from within
"$handler"
    ("uplevel" body line 2)
    invoked from within
"uplevel $code"
    invoked from within
"ad_try {
	$handler
      } ad_script_abort val {
	# do nothing
      }"
    invoked from within
"rp_serve_concrete_file [ad_conn file]"
    (procedure "rp_serve_abstract_file" line 60)
    invoked from within
"rp_serve_abstract_file -noredirect  -extension_pattern ".vuh" "$root$prefix""
    ("uplevel" body line 3)
    invoked from within
"uplevel $code"
    invoked from within
"ad_try {
	  ad_conn -set path_info  [string range $path [expr [string length $prefix] - 1] end]
	  rp_serve_abstract_file -noredirect  -extension_patt..."