PLS-00306: wrong number or types of arguments in call to 'SHOW'

Question

Statement : declare
rc__ number;
begin
owa.init_cgi_env(:n__,:nm__,:v__);
htp.HTBUF_LEN := 255;
null;
null;
wwv_flow.show(p_request=>:p_request,p_instance=>:p_instance,p_flow_id=>:p_flow_id,p_flow_step_id=>:p_flow_step_id,p_arg_names=>:p_arg_names,p_arg_values=>:p_arg_values);
if (wpg_docload.is_file_download) then
rc__ := 1;
wpg_docload.get_download_file(:doc_info);
null;
null;
commit;
else
rc__ := 0;
null;
null;
commit;
owa.get_page(:data__,:ndata__);
end if;
:rc__ := rc__;
end;
Did someone ever see this ?
My database throws it every time i use an ajax validation with javascript. The application is NOT affected in any way, means the validation is done correct:
function validate(pNumber,i){
var get = new htmldb_Get(null,html_GetElement('pFlowId').value,'APPLICATION_PROCESS=validate_number',100);
get.add('F500_VALID_NUMBER', pNumber);
gReturn = get.get();
html_GetElement('err'+i).innerHTML=gReturn;
The validate_number Application Process then uses a Stored Function for the "real" validation.
Thanks for help,
Jochen

Answer 1

Jochen,
yes when you trace modplsql, I can see this and I also have an error I don't know why.
<360294694 ms>(wppr.c,497) Pl/sql block parsed...
<360294694 ms>(wpdenv.c,1531) CGI Environment has 31 vars. Max name len 128, Max Value Len 128
<360294694 ms> PLSQL_GATEWAY(14)=(6)WebDb
<360294694 ms> GATEWAY_IVERSION(17)=(2)2
<360294694 ms> SERVER_SOFTWARE(16)=(60)Oracle-Application-Server-10g/10.1.2.2.0 Oracle-HTTP-Server
<360294694 ms> GATEWAY_INTERFACE(18)=(8)CGI/1.1
<360294694 ms> SERVER_PORT(12)=(5)7779
<360294694 ms> SERVER_NAME(12)=(10)net-srv05
<360294694 ms> REQUEST_METHOD(15)=(5)POST
<360294694 ms> PATH_INFO(10)=(15)/wwv_flow.show
<360294694 ms> SCRIPT_NAME(12)=(10)/pls/apex
<360294694 ms> REMOTE_ADDR(12)=(14)172.20.100.77
<360294694 ms> SERVER_PROTOCOL(16)=(9)HTTP/1.1
<360294694 ms> REQUEST_PROTOCOL(17)=(5)HTTP
<360294694 ms> REMOTE_USER(12)=(17)APEX_PUBLIC_USER
<360294694 ms> HTTP_CONTENT_LENGTH(20)=(4)149
<360294694 ms> HTTP_CONTENT_TYPE(18)=(34)application/x-www-form-urlencoded
<360294694 ms> HTTP_USER_AGENT(16)=(51)Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)
<360294694 ms> HTTP_HOST(10)=(11)172.18.2.5
<360294694 ms> HTTP_ACCEPT(12)=(4)*/*
<360294694 ms> HTTP_ACCEPT_LANGUAGE(21)=(18)en-us,ar-lb;q=0.5
<360294694 ms> HTTP_COOKIE(12)=(105)LOGIN_USERNAME_COOKIE=usr1234; WWV_CUSTOM-F_941322186522444_101=725E6950E8DF04E5; oracle.uix=0^^GMT+2:00
<360294694 ms> HTTP_REFERER(13)=(53)http://172.18.2.5/pls/apex/f?p=101:1:950664913516045
<360294694 ms> HTTP_ORACLE_ECID(17)=(14)89781163291,1
<360294694 ms> HTTP_ORACLE_CACHE_VERSION(26)=(7)10.1.2
<360294694 ms> WEB_AUTHENT_PREFIX(19)=(1)
<360294694 ms> DAD_NAME(9)=(5)apex
<360294694 ms> DOC_ACCESS_PATH(16)=(5)docs
<360294694 ms> DOCUMENT_TABLE(15)=(23)wwv_flow_file_objects$
<360294694 ms> PATH_ALIAS(11)=(1)
<360294694 ms> REQUEST_CHARSET(16)=(9)AL32UTF8
<360294694 ms> REQUEST_IANA_CHARSET(21)=(6)UTF-8
<360294694 ms> SCRIPT_PREFIX(14)=(5)/pls
<360294694 ms>StrArrPosBind pos 2 Charset Id : 873
<360294694 ms>StrArrPosBind pos 3 Charset Id : 873
<360294694 ms>StrArrPosBind pos 11 Charset Id : 873
<360294704 ms>Execute: ORA-06550: line 33, column 3:
PLS-00306: wrong number or types of arguments in call to 'SHOW'
ORA-06550: line 33, column 3:
PLS-00306: wrong number or types of arguments in call to 'SHOW'
ORA-06550: line 33, column 3:
PL/SQL: Statement ignored
apex team comments are highly appreciated.
one more thing I can see for each ajax request I have in my page a hard parse is happening .
Omar