Alter session attributes in OBIEEreports

Hi All,
I want to know whethe I can 'alter session' before the SQL generated by OBIEE automatically?
If yes, how should I configure it?
Thank you in advance.
Leon

Hi Leon,
I think that option a) is used for each connection and option b) for each SQL statement.
Maybe something is available in the front-end that will enable you to execute the ALTER SESSION ahead of a specific statement... but I am not aware of that.
If you want to use ALTER SESSION only for SQL commands on a specific set of tables, you can try to create a new physical database / business model / presentation catalog specifically for those requests? Then you can use option a) and or b)..
Regards,
Marco
Edited by: m.siliakus on Feb 21, 2011 3:12 PM

Similar Messages

Alter session is not wofking

Hi All,
I have created process to alter session so I control the currency format, any way the process is working fine on the home page, but when visit another page or return to the home page the session value (currency format )will go back to previous setting ($). How can I keep this session consistent and fixed across my website?
Also when I change the order by for any report the currency format will be shown in older setting ($), I’m using PPR reports.
PS, when moving between pages the session state is same doesn't change. Also i have tried both application process and page process on new session and on page load.
Thanks,
Fadi.

Sorry to bother you with what should be a very stupid question.
I have tried to use the advice given to set the currency for my APEX application.
I used the VPD call in the security attributes tab for my application:
begin
execute immediate 'alter session set nls_territory=''FRANCE''';
execute immediate 'alter session set nls_currency=''€''';
end;
When applying the changes, the euro symbol (€) is set to a reverse question mark (¿)
I can think of a character set problem but no other clue.
Thanks in advance for any interest in my question,
Daniel

How to tell if a user is issuing 'alter session statements'

When I run 'alter session' from sqlplus in my schema, this does not get parsed and go to v$sql or show up in v$open_cursor. I have a user that is running queries from informatica. He says he is passing alter session statements through informatica, I want to see if they actually get there. The person is not real versed in oracle and I don't know informatica.
i cant turn on trace cause he connects and disconnects and this would run immediately, I am not in a position to turn on system level tracing, add a trigger, or turn on auditing (not allowed).
anyway to tell from a data dictionary view or something like that if these were issued by a given session? The queries run for a few minutes, so I have a bit before his session disconnects to query the data. I can't get him to change his code to stay connected. Is there a view that shows parameter changes for a given session?
oracle: 10.2.0.5
4 alter session commands are:
Alter session set sort_area_size=999999999;
Alter session set hash_area_size=999999999;
Alter session set db_file_multiblock_read_count = 128;
alter session enable parallel dml;
Edited by: Guess2 on Jul 17, 2012 12:49 PM

i cant turn on trace cause he connects and disconnects and this would run immediately, I am not in a position to turn on system level tracing, add a trigger, or turn on auditing (not allowed). If Informatica connects to Oracle via network, capturing TCP/IP traffic and mining in it may be your last resort.
you can get session's PDML status from
select pdml_status from v$session;
i cant turn on trace cause he connects and disconnects and this would run immediatelythis contradicts to your following statement
The queries run for a few minutes, so I have a bit before his session disconnects to query the data.
I can't get him to change his code to stay connected. Informatica should have debug. Ask him if he can go step by step.
Edited by: user11181920 on Jul 17, 2012 5:53 PM

Create view and alter Session gets 0RA-01031

I can't create a view after using ALTER SESSION set current_schema without using an explicit schema. I get ORA-01031. Is this a known bug? Here are the details:
1. Log on as SYSTEM
2. ALTER SESSION set current_schema=FRED;
3. CREATE VIEW vFoo as select * from Foo; -- ORA-01031: insufficient privileges
4. CREATE VIEW FRED.vFoo as select * from Foo; -- this works!
I've read where some privileges need to be granted directly. In fact, if Fred grants select privilege on Foo to SYSTEM, the statement in #3 above works. However, something doesn't seem right because why does #4 succeed without the GRANT?
In case you're wondering why I don't just use #4 above, which does work, it's because I've got a script that will be run by customers to create tables, views, etc. in an arbitrary schema and the schema is associated with a user with limited permissions. Hence, the use of the ALTER SESSION.

See, You looged as SYSTEM (Scheme = SYSTEM)
Now you alter your session to another schema FRED.
Now if you want to access SCHEMA of FRED, You need to connect first.
SQL > connect user/password@host
Then
SQL > CREATE VIEW vFoo as select * from Foo;
View created.

How to set session attributes in a bean?

How do I set a session attribute in a server-side bean?
I'm not sure if I asked the question the right way. What I meant is, while it's easy to set session attributes in a JSP page (session.setAttribute("sessionname", "sessionvalue")), I'd want to set such an attribute within a server-side bean defined in this web application. But what is the syntax for doing it?

Here a simple bean that stores something in the session and retrieves something from it.
import javax.servlet.http.HttpSession;
public class TestBean {
private String value;
public void doSomething(HttpSession session, int a, int b) {
    if (a+b > 0) {
      session.setAttribute("ab",Boolean.TRUE);
    } else {
      session.setAttribute("ab",Boolean.FALSE);
public void init(HttpSession session) {
    if (session != null) {
      Boolean b = (Boolean)session.getAttribute("ab");
      if (b == Boolean.TRUE) {
        value = "a + b is greater than zero";
      } else {
        value = "a + b is not greater than zero";
    } else {
      value = "no session";
public String getValue() {
    return value;
}In your JSP, use something along the lines of :
<%
TestBean bean = new TestBean();
bean.init(session);
bean.doSomething(session,1,2);
%>If your bean only lives during one request, you can pass the session to the constructor, which stores it in a private variable. This saves passing the session each time.
Hope this helps,
--Arnout

Javascript to JSP question...Can javascript function set session attributes

hello,
i have a web app that, on one of its pages, displays "tabbed pane" as an image map at the top (a la amazon.com). my problem is this: each "logical" page contains separate forms that all use the same javabean. in other words, imagine that the tabs represent an account maintenance web ui for an on-line record store. the first tab might be labeled "General," the second "Contact info," the third "Shipping Info." Each uses the same account bean and displays portions of its properties relevant to the tab at hand. what i want to do is allow a user to enter the account maintenance ui, update info on the first tab, click on tab two and have the request with the changes sent to a processing jsp. yet, since each "tab" is actually a separate URL to another page, how do i get the updated info on the first tabe without adding some sort of "SAVE" button on each tab. ive considered using javascript, but dont know how to get the request params out of the first tab whn i click on another tab. is it possible to include an "onClick" function in each URL that "grabs" the updated form fields off the preceeding tab? can a javacript function set session attributes in jsp?

hello there,
wow, you've created one big mammy-jammy tool.
first, javascript cannot access, set values to the session, without having to post to another JSP. javascript is great for manipulating objects, layers, form values, etc.
you have 2 issues [if i understand correctly]:
1) you need to able to save user info for a specific tab without having to reloading the page.
---you can create a form for EACH of your tabs and POST all the information to a hidden IFRAME or LAYER for NN4. that hidden IFRAME / LAYER will load a JSP page which with all the parameters you posted to it. or you can build a FRAMESET and target that document["frame-name"].src with that same JSP.
2) handling when the SAVE INFO action should happen: hence some javascript event handler: onMouseOver, onClick, etc
---i don't know the dynamics of your tabs, but if store which tab was clicked on last, then if the user clicks on some other tab, javascript can submit that FORM to a JSP [see condition above]
you have an interesting tool. can i see?
i hope i wasn't too confusing, but your problem is sooo interesting. =)
-WJP

How to get from data entered on a form to a session attribute

I have a jsp with a form with fields that are updated by the user.
The values are in the fields value as I expected.
Example. document.frm.Name.value = "Me"
How do I populate a session variable with document.frm.Name.value?
I think I have to do a request.getParameter("Name") followed by a
session.SetAttribute. But the request.getParameter does not get populated with the latest value in document.frm.Name.value.
Any idea is welcomed. Thanks
Claudiine

Below is the code:
What I want to do is save in the session attribute "mailToAddressList" whatever the user types in the textarea "MailTo"
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;
import java.sql.*;
import java.text.*;
import java.io.*;
import com.cname.apl.*;
public class DealTeamServlet extends HttpServlet {
private appUtil util ;
private java.sql.Connection conn ;
private static String dbUrl ;
private static String dbUid ;
private static String dbPwd ;
private static String mailFromAddressList ;
private static String mailToAddressList ;
private static String mailCcAddressList ;
private static String mailBccAddressList ;
private static String mailSubject ;
SimpleDateFormat SDF = new SimpleDateFormat("d-MMM-yyyy");
public void init(ServletConfig config) throws ServletException {
super.init(config);
dbUrl = config.getInitParameter("dbUrl");
dbUid = config.getInitParameter("dbUid");
dbPwd = config.getInitParameter("dbPwd");
mailFromAddressList = config.getInitParameter("mailFromAddressList");
mailToAddressList = config.getInitParameter("mailToAddressList");
mailCcAddressList = config.getInitParameter("mailCcAddressList");
mailBccAddressList = config.getInitParameter("mailBccAddressList");
mailSubject = config.getInitParameter("mailSubject");
if (dbUrl == null)
dbUrl = "*" ;
if (dbUid == null)
dbUid = "*" ;
if (dbPwd == null)
dbPwd = "*" ;
if (mailFromAddressList == null || mailFromAddressList.equals("*"))
mailFromAddressList = "" ;
if (mailToAddressList == null || mailToAddressList.equals("*"))
mailToAddressList = "" ;
if (mailCcAddressList == null || mailCcAddressList.equals("*"))
mailCcAddressList = "" ;
if (mailBccAddressList == null || mailBccAddressList.equals("*"))
mailBccAddressList = "" ;
if (mailSubject == null || mailSubject.equals("*"))
mailSubject = "" ;
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, java.io.IOException {
HttpSession session = request.getSession(true) ;
String msgBody = (String) request.getParameter("msgBody");
String uid = (String) request.getParameter("uid");
String key = (String) request.getParameter("key");
Boolean isAuthorized = (Boolean) session.getAttribute("isAuthorized");
java.io.PrintWriter out = response.getWriter();
if (msgBody == null) msgBody = "" ;
response.setContentType("text/html");
if (uid == null || key == null) {
isAuthorized = new Boolean(false);
if ( isAuthorized == null ) {
util = new appUtil();
conn = util.getConnection(dbUrl, dbUid, dbPwd) ;
isAuthorized = util.isAuthorized(conn, uid, key);
util.closeConnection(conn) ;
if ( isAuthorized.booleanValue() ) {
session.setAttribute("isAuthorized", new Boolean(true));
java.sql.Timestamp serverTime = util.getServerTime(conn) ;
java.sql.Date now = new java.sql.Date(serverTime.getTime());
int idEntry = Integer.parseInt(msgBody);
mailToAddressList = request.getParameter("MailTo");
out.println("<html>");
out.println("<head>");
out.println("<title>Team Members</title>");
out.println("<SCRIPT LANGUAGE=JavaScript>");
out.println("function open_window() {");
out.println("document.domain = \"ny.cname.com\"");
out.println("var loc = \"http://peoplelkp.ny.cname.com/peoplelkp/PDLookupService?&emil2=eMail&form=frm&launch=myRoutine()&csr=1&srch=1&adv=1&wc=y&pump=\"");
out.println("loc = loc + document.frm.Name.value");
out.println("var w = window.open(loc,\"Model_Details\",\"scrollbars,width=400,height=450,resizable=yes\")");
out.println("return;");
out.println("}");
out.println("function myRoutine() {");
out.println("document.frm.MailTo.value=document.frm.MailTo.value+\",\"+document.frm.eMail.value;");
out.println("}");
out.println("function submitForm() {");
out.println("alert('submit form')");
out.println("var mailAdd = document.frm.MailTo.value");
out.println("alert('mailAdd='+mailAdd);");
out.println("if ( mailAdd.length == 0 || mailAdd.indexOf(' ') == 0 || mailAdd.indexOf('.com') == -1 || mailAdd.indexOf('@') == -1 ) {" );
out.println("alert('The To: field must be populated. No space are allowed. Email addresses must have valid format. Example: [email protected]')");
out.println("document.all.frm.MailTo.focus();");
out.println("return false;");
out.println("}");
out.println("return true;");
out.println("}");
out.println("function UpdateMailTo() {");
out.println("alert ('I am in UpdateMailTo='+document.frm.MailTo.value);");
out.println("}");
out.println("</SCRIPT>");
out.println(util.getStyleSheet());
out.println("</head>");
out.println("<body bgcolor='silver'>");
out.println("<form name='frm' action='SendMail' method='post'>");
out.println("<b>Team Members</b>");
out.println("<tr>");
out.println("<TABLE cellpadding='0' cellspacing='0' border='0'>");
out.println("<tr>");
out.println("<td align='right'><b>Subject:  </b></td>");
out.println("<td>Deal Team Members Cleared by Conflicts</td>");
out.println("</tr><br>");
StringBuffer bod = new StringBuffer("");
SimpleDateFormat SDF = new SimpleDateFormat("d-MMM-yyyy");
try {
/*get header information*/
CallableStatement st = conn.prepareCall("{call apl_get_sp ?}");
st.setInt(1, idEntry);
ResultSet rs = st.executeQuery();
int id = 0;
int dw = 0;
String cde_proj = "";
String nm_title = "";
String nm_long = "";
String empl = "";
String sid = "";
int userid = 0;
String email_pr = "";
while ( rs.next() ) {
id = rs.getInt("id_entry");
dw = rs.getInt("id_dealworks");
cde_proj = rs.getString("cde_proj");
nm_title = rs.getString("nm_title");
nm_long = rs.getString("nm_long");
empl = rs.getString("empl_name");
sid = rs.getString("id_standard");
email_pr = rs.getString("id_email_ext_unix");
mailToAddressList = email_pr.trim();
out.println("<tr><td align='right'><b>To:  </b></td>");
out.println("<td><textarea name='MailTo' cols='50' rows='2'>"+mailToAddressList+ "</textarea></td>");
out.println("<td>  </td>");
out.println("<td><input type='button' value='Save' onClick='UpdateMailTo()'></td>");
out.println("</tr>");
// out.println("request.setAttribute('mailadd',document.frm.MailTo.value);");
// mailToAddressList = request.getParameter("mailadd");
out.println("<tr><td align='right'><b>Name:  </b></td>");
out.println("<td><INPUT NAME='Name' VALUE='' size=65 ></td>");
out.println("<td>  </td>");
out.println("<td><input type='button' value='Search' onClick='open_window()'></td>");
out.println("</tr>");
out.println("<tr><td align='right'><b>EMail:  </b></td>");
out.println("<td><INPUT NAME='eMail' VALUE='' size=65'></td>");
out.println("</tr>");
if (rslt != null) rslt.close() ;
if (stmt != null) stmt.close() ;
}/*end try*/
catch ( Exception e) {
System.out.println(e) ;
getServletContext().log(e.toString());
out.println("<td colspan='5' align='right'><input type='submit' value='Send email' onClick='submitForm()'></td>");
out.println("</tr>");
out.println("</table>");
out.println("</form>");
out.println("</body>");
out.println("</html>");
mailSubject = "Team Members";
String body = "testing";
session.setAttribute("mailFromAddressList", mailFromAddressList);
session.setAttribute("mailToAddressList", mailToAddressList);
session.setAttribute("mailCcAddressList", mailCcAddressList);
session.setAttribute("mailBccAddressList", mailBccAddressList);
session.setAttribute("mailSubject", mailSubject);
session.setAttribute("mailBody", body);
else {
session.setAttribute("isAuthorized", new Boolean(false));
out.println("You are not authorized.");
//out.close();
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, java.io.IOException {
processRequest(request, response);
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, java.io.IOException {
processRequest(request, response);
public String getServletInfo() {
return "Short description";
}

Problem removing session attributes

I have a problem removing session attributes
I try w/ mysession.removeAttribute("key");
but it still lives in memory. I've tried setAttribute("key", null) as the API states that will do the same thing, but it doesn't work.
I can get mysession.invalidate() to work, but I want to keep some of the attributes there, while removing another.
I get no exceptions and no errors.
Help.
Running Tomcat 4
jre 1.3.1

Actually,
response.addHeader("Expires", "-1");should be enough.
The browser should then contact the Web server for updates to that page via a conditional If-Modified-Since request. You don't want a cache disabling 'overkill', since you'd still want the page to remain in the disk cache and used in appropriate situations without contacting the remote Web server, such as when the BACK and FORWARD buttons are pressed...
Anyway, try this first, and if it doesn't solve your problem, add the other cache-disabling headers, as outlined in the previous post.
If you're using JSP, verify also that your page has
<%@ page session="true"%>

How to save the login ID as a session attribute ?

I am using form-based authentication in a web application which is being deployed on a JBoss 3.2.3 server. I am authenticating against an Oracle database by way of a DatabaseServerLoginModule (JAAS).
I would like to save the user's login ID as a session attribute in order to be able to use it later in the application.
It's not obvious how you can capture this information and add it to the session, since it seems that the login ID is lost once the authentication is done by j_security_check process.
Is there some way to tell the servlet container to save the login ID as a session attribute as part of the j_security_check process (something along the lines of "if the authentication succeeds add the login ID as an attribute to the session") ?
Is there another approach ? What is the accepted "best practice" for doing session initialization after authentication ? For example if a user needs to have several attributes set in their session after login -- how is this handled ? I have done this before with a login servlet which did both the authentication and the session initialization, but when using form-based authentication and j_security_check it's not clear to me how you go from the authentication to the initialization logic.
Thanks in advance for any suggestions or insight.

You should already have it... hidden in request.getUserPrincipal().getName()

Variable coming from a session attribute

Hello, I am developing a web application with JDeveloper 10g
I've got a View Object which is basically a query, where I use a variable:
WHERE BbCustomerOrderStatusTab.CUSTNO = :CustomerNumber
When I define CustomerNumber in a form, it works:
<af:panelForm>
<af:inputText value="#{bindings.CustomerNumber.inputValue}"
label="#{bindings.CustomerNumber.label}"
required="#{bindings.CustomerNumber.mandatory}"
columns="#{bindings.CustomerNumber.displayWidth}">
<af:validator binding="#{bindings.CustomerNumber.validator}"/>
</af:inputText>
<af:commandButton actionListener="#{bindings.ExecuteWithParams.execute}"
text="ExecuteWithParams"
disabled="#{!bindings.ExecuteWithParams.enabled}"/>
</af:panelForm>
But I would like CustomerNumber to come from a session attribute. I tried something like that:
session.setAttribute("CustomNum","IRI0001");
setCustomerNumber(session.getAttribute("CustomNum"));
with the View Object Editor -> Client Interface setCustomerNumber selected, but it doesn't work.
I tried :
String CustNum=session.getAttribute("CustomNum");
%>
<af:attribute name="#{bindings.CustomerNumber}"
value="<%= CustNum%>"/>
but it tells me that "Attribute value does not accept runtime expressions".
Does someone know how I could do that?
Thanks,
Romain

Hi,
Frank's suggestion should work.
Most importantly, don't forget to declare your bind variable in your view object !!
Your statement looks odd to me
String CustNum=session.getAttribute("CustomNum");
%>
<af:attribute name="#{bindings.CustomerNumber}"
value="<%= CustNum%>"/>
There are many ways to do it. You may try using backing bean for command button's actionlistener or action like the following
class myBackingBean
private String CustNum; //of course with getter and setter method
myButtonAction() {
CustNum = yourFavouriteValue;
OperationBinding ob = getBindings().getOperationBinding("ExecuteWithParams"};
ob.execute();
note you must declare CustomValue in your pageDef's binding to #{yourBackBeanClass.CustNum} in your ExecuteWithParams binding
I don't know and seems not being recommended to set session value in jspx.
Another way is inside your command button in the jspx
<af:setActionListener from="#{somesource.value}"
to="#{processScope.CustNum}"/>
in such case, you must declare CustomValue in your pageDef's binding to #{processScope.CustNum} in your ExecuteWithParams binding
If you have already set session value somewhere beforehand, then what you need to do is simply declare CustomValue in your pageDef's binding to #{sessionScope.CustNum} in your ExecuteWithParams binding.
I did lot of ExecuteWithParams thing and no problems occur so far.

Alter session set NLS_DATE_FORMAT and to_date not working

Hey folks,
for the sake of simplicity let's assume i want to get the current system time from the table dual in a certain format, e.g. 'YY.MM.DD'.
Currently the query
select sysdate from dual;
yields:
07-JAN-08
The desired output should look like this:
08.01.07
So, according to the manual, i tried the following:
alter session set NLS_DATE_FORMAT = 'yy.mm.dd';
No effect, date is still displayed as
07-JAN-08
Even the following query:
select TO_DATE (sysdate, 'yy.mm.dd') from dual;
yields
07-JAN-08
What am i doing wrong here?
Additional information:
-> DB is Oracle 9
-> I am using the Oracle SQL Developer under Ubuntu Gutsy
-> No, i did not forget to commit my commands....:-)
Any ideas?

select TO_CHAR (sysdate, 'yy.mm.dd') from dual;However the alter session command should work:
SQL*Plus: Release 9.2.0.2.0 - Production on Mon Jan 7 14:32:26 2008
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Connected to:
Oracle9i Enterprise Edition Release 9.2.0.8.0 - 64bit Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.8.0 - Production
SQL> alter session set NLS_DATE_FORMAT = 'yy.mm.dd';
Session altered.
SQL> select sysdate from dual;
SYSDATE
08.01.07
SQL> Note: There is nothing to commit here. Only selects, no DML.
Message was edited by:
Sven W.

RMAN-10006: error running SQL statement: alter session set remote_dependenc

Backups are failing with following error
RMAN-00554: initialization of internal recovery manager package failed
RMAN-12001: could not open channel default
RMAN-10008: could not create channel context
RMAN-10002: ORACLE error: ORA-00096: invalid value SIGNATURE for parameter remote_dependencies_mode, must be from among MANUAL, AUTO
RMAN-10006: error running SQL statement: alter session set remote_dependencies_mode = signature
Not able to change to signature
SQL> alter session set remote_dependencies_mode=signature;
ERROR:
ORA-00096: invalid value SIGNATURE for parameter remote_dependencies_mode, must
be from among MANUAL, AUTO
I dont see MANUAL or AUTO as valid value for this parameter (http://download.oracle.com/docs/cd/B10501_01/server.920/a96536/ch1175.htm#1023124) DB version is 9.2.0
Parameter type
String
Syntax
REMOTE_DEPENDENCIES_MODE = {TIMESTAMP | SIGNATURE}
Default value
TIMESTAMP
Parameter class
Dynamic: ALTER SESSION, ALTER SYSTEM
=======================================
I believe it could be because of following bug
"A PRE-PATCHED ORACLE IMAGE CAN BE INSTALLED IN MEMORY "
Refer: "https://metalink2.oracle.com/metalink/plsql/f?p=130:15:1613505143885559758::::p15_database_id,p15_docid,p15_show_header,p15_show_help,p15_black_frame,p15_font:BUG,4610411,1,1,1,helvetica"
I appreciate your effort in fixing this issue.
Edited by: user10610722 on Nov 25, 2008 4:37 PM

Hi:
It seems when you are starting RMAN it's executing some commands (one 'ALTER SESSION...'. It's seems to be a batch which has a bad value for SORT_AREA_SIZE. Find it and modify to a proper value as message shows. If you can't find start RMAN by calling directly the executable ($ORACLE_HOME/bin/rman or %ORACLE_HOME%/bin/rman.exe).

Unable set session attribute with certain types.

Hello I was surprise that when I execute HttpSession.setAttribute("somekey", new HashMap()), "somekey" will not be stored in the Session. I can replace HashMap with HashSet and it's okay.
          Out of curiosity, I create a Java class like below :
          public class abc implements Serializable {
          public String def = "def";
          And I have the same issue with HashMap and it will not get stored in the Session attribute. Does anyone know what kind of valid object and what makes the object storable into the Session's attribute? Any inputs are appreciated. Thanks.
          yien

Actually never mind. It have something to do with BEA's Portal Ad services. I will post this into the appropriate forum.

Using ALTER SESSION inside a stored procedure.... not a good idea?

Hi,
I have two stored procedures, both of which are used to query a database to find a particular book, based on ISBN. One sproc searches our main product catalogue and the other searches our suppliers feed catalogues. The stored procedures are called from a C# application via a search tool and the user is able to search on either our catalogue or our suppliers. The appropriate procedure is called based on the users choices.
However, the following behaviour is observed
I search for an ISBN (is a varchar2 field, as isbn's may contain an X if the checksum digit equates to 10) on a feed, so uses the FEED SPROC. The book is found and returned to the app in about 0.5 seconds. I can repeat this as often as i like on different books etc. always works fine.
I then do the same search but against our own catalogue, so uses our CATALOGUE SPROC. Again the book is found quickly, and the search can be repeated with the same results.
If i then go back and run our FEED SPROC then the search time increases to about 3 minutes !
Both the feed and our catalogue is in the same database, although different schema's the connections will be pooled through our app server.
I can repliacte this every single time. I think i have narrowed doen the cause of this behaviour to a few lines of code in our CATALOGUE SPROC:
-- store values
select value into v_vch_NLS_COMP from nls_session_parameters nsp where nsp.parameter = 'NLS_COMP';
select value into v_vch_NLS_SORT from nls_session_parameters nsp where nsp.parameter = 'NLS_SORT';
-- Ensure case insensitivity throughout
EXECUTE IMMEDIATE 'ALTER SESSION SET NLS_COMP = LINGUISTIC';
EXECUTE IMMEDIATE 'ALTER SESSION SET NLS_SORT = BINARY_CI';
do other stuff
-- restore session variables
EXECUTE IMMEDIATE 'ALTER SESSION SET NLS_COMP = ' || v_vch_NLS_COMP;
EXECUTE IMMEDIATE 'ALTER SESSION SET NLS_SORT = ' || v_vch_NLS_SORT;
If i remove this code then all is well, so i am assuming that using ALTER SESSION inside a stored procedure is the cause of the problem as it would be changing the execution plan of the FEEDS SPROC in some manner? Any ideas? I know i can just rewrite the sproc to avoid using this coding, but wanted to understand if i am doing something wrong by using ALTER SESSION in this manner?
Any pointers would be appreciated.
John Thompson
Software Architect,
play.com
Edited by: user7186902 on 27-May-2009 03:51

Hello (and welcome),
It may be a case of having to create a linguistic index to facilitate the queries once you set these session level parameters, i.e..,
CREATE INDEX idx_01 ON tab ((NLSSORT(col1, 'NLS_SORT=BINARY_CI'))It would appear that the setting of those parameters is invalidating index searching on the current indexes.

Oracle Alter Session not working in CF9

Hello,
I'm trying to understand differences between CF5 and CF9 when I retrieve numbers and dates from an Oracle Database.
The code I ran on CF5 and CF9 servers :
<cfoutput>
<cftransaction>
<cfquery datasource="intranet">
alter session SET NLS_TERRITORY = FRANCE
</cfquery>
<cfquery name="qry" datasource="intranet">
select
     TO_NUMBER(12345/10) as nbr,
     sysdate as dt,
     TO_CHAR(1234.56,'L99G999D99') as cur
from dual
</cfquery>
</cftransaction>
#qry.nbr#<br>
#qry.dt#<br>
#qry.cur#
</cfoutput>
I've got those outputs :
Result in CF5
Result in CF9
1234,5
01/12/09
¿1.234,56
1234.5
2009-12-01 19:16:04.0
¿1.234,56
The first two rows in CF5 display data in French format. That's not the same for CF9, the data are in American format.
Then I changed the NLS_TERRITORY parameter
alter session SET NLS_TERRITORY = AMERICA
Result in CF5
Result in CF9
1234.5
01-DEC-09
$1,234.56
1234.5
2009-12-01 19:20:39.0
$1,234.56
The two first row haven't changed in CF9, it seems that the "alter session" has no effect on number and date format in query results. Is that a bug or am I misunderstanding something ?
Regards,
Maxime

Thank you for your reply.
I tried what you've suggested on the CF9 server.
The results are :
NLS_TERRITORY =
1) oracle JDBC database
2) oracle JDBC thin client
3) oracle JDBC-ODBC bridge
AMERICA
1234.5
2009-12-02 13:24:30.0
$1,234.56
1234.5
{ts '2009-12-02 00:00:00'}
$1,234.56
1234.5
2009-12-02 13:24:30.0
$1,234.56
FRANCE
1234.5
2009-12-02 13:29:53.0
¿1.234,56
1234.5
{ts '2009-12-02 00:00:00'}
¿1.234,56
1234.5
2009-12-02 13:29:53.0
¿1.234,56
The behavior is pretty much the same in the three differents ways to call the database. The only difference is on the date display using the Oracle JDBC thin client, which is another format from those I've already got.
Regards,
Maxime

Alter session attributes in OBIEEreports

Similar Messages

Maybe you are looking for