Sequence undefined in session ???

8i running on Tru64.
SQL*Plus reports undefined sequence when asking for currval, but does increment sequence with nextval. Here's an excerpt...SQL> select object_name,object_type from user_objects where object_name='HIER_FILE_SEQ';
OBJECT_NAME
OBJECT_TYPE
HIER_FILE_SEQ
SEQUENCE
SQL> select hier_file_seq.currval from dual;
select hier_file_seq.currval from dual
ERROR at line 1:
ORA-08002: sequence HIER_FILE_SEQ.CURRVAL is not yet defined in this session
SQL> select hier_file_seq.nextval from dual;
NEXTVAL
3
The sequence was created using...
create sequence hier_file_seq;
Thanks in Advance for any help.
-dave

Hmmm,
Did you even test this yourself?
create sequence test INCREMENT BY 1 START WITH 1 MAXVALUE 1000000 MINVALUE 1;
select test.currval from dual;
select test.currval from dual
ERROR at line 1:
ORA-08002: sequence TEST.CURRVAL is not yet defined in this session
select test.nextval from dual;
NEXTVAL
1
1 row selected.
select test.currval from dual;
CURRVAL
1
1 row selected.
Currval is only known if you first selected the nextval of the sequence...

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How to create temp Sequence for multi sessions

Hi,
I"m using Global Temp table and I need to insert Identity (or Seq-Number) column into it, but I also have multiple sessions for my sp and each case shold have it's own Seq-Number, starting from 0.
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http://hemantoracledba.blogspot.com
Edited by: Hemant K Chitale on Sep 16, 2010 2:13 PM
correcteed the SQL statement

Sequence number current session

hi sir,
wanna ask,
i use select seq_name.currval from dual is not working it ask to define in current session if i use .nextval then use currval then it works,,,even this is not first time increment,,,,so is there anyway to use currval without use nextval.?
thanks in advance

can u use like this?
select last_number-increment_by
from user_sequences
where sequence_name = 'UR_SEQ';
Message was edited by:
jeneesh

ColdFusion 11 Throws Error Session Variable Undefined, When in fact it is Defined as shown by CFDump.

I've been having a particularly annoying error with ColdFusion 11, and unable to track down the source of this problem.
Basically There are a few variables defined in the session scope we check with isdefined a few lines above to make sure they are defined. Subsequent lines may or may not throw a #variablename# is undefined on random lines.
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I am doing isDefined checks for relevant variables when neccessary. The problem is not that the code errors out undefined ... it's that the variable is actually defined and errors out undefined.
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<cftry>
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        <cfset session.user.surname="">
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<cflocation url="index.cfm">
Index.cfm

<cfparam name="session.user.email" default="">


<cfquery name="qUserInformation" datasource="userdetails">
SELECT * FROM Information
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ORDER BY SomeOtherColumn
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<cfquery name="qUserGroups" datasource="userdetails">
SELECT * FROM Groups
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<cfscript>
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in the wwwroot the Application.cfm handles all errors generated during rendering of the page, which includes generating a cfdump of the session scope.
When I get the Error Log I can see in the cfcatch cfdump the error... Element USER.EMAIL UnDefined in SESSION.
struct
Browser
Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.124 Safari/537.36
DateTime
{ts '2014-09-28 11:38:48'}
Diagnostics
Element USER.EMAIL is undefined in SESSION. <br>The error occurred on line 15.
However when I check the SESSION scope which is also dumped ... It is defined!
struct
user
struct
COLOR
cccccc
EMAIL
[email protected]
FIRSTNAME
Example
SURNAME
Surname
EXAMPLE1
1
TEMPLATE
template14
TEMPLATE_DETAILS
0
What is causing this strange and irratic behaviour? The problem is so far I cannot replicate the issue. It is intermittant. The issue only started after upgrading to ColdFusion 11. This code has worked flawlessly for years on CF8.

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Problem with Sequence in Form

I created a sequence as:
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Yes, I've worked with something like that before. I'm not sure if there was an issue with using a 'for update nowait' lock, but it used dbms_lock instead. After getting a lock, delete the record. If the user saves the form then the sequence will used there, if they roll back it will remain on the table.
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Filtering a Recordset with session variable

Hi
I am trying to filter a recordset based on a session
variable. The session variable is passed from the login page via a
username which is their email address. This has been successful.
However when I want to filter the users table - tbl_users to
show their first name it doesn't work.
I followed the adobe help tutorial plus ahave tried other
combinations and I am now at a loss on where exactly I am going
wrong.
The recordset is rs_UserAccess
I have a session variable called - MM_Username
The table has 5 records of various users
The code that I have fiddling with is -
<%
Dim rs_UserAccess
Dim rs_UserAccess_numRows
Set rs_UserAccess = Server.CreateObject("ADODB.Recordset")
rs_UserAccess.ActiveConnection = MM_conn_sidecounter_STRING
rs_UserAccess.Source = "SELECT * FROM tbl_users WHERE
username = MM_Username"
rs_UserAccess.CursorType = 0
rs_UserAccess.CursorLocation = 2
rs_UserAccess.LockType = 1
rs_UserAccess.Open()
rs_UserAccess_numRows = 0
%>
Any help would be appreciated. I have outlined below the
different combinations I have tested.
Try No1
rs_UserAccess.Source ="SELECT * FROM tbl_users WHERE username
= Session("MM_Username")”
Message:
Microsoft VBScript compilation error '800a0401'
Expected end of statement
/main.asp, line 182
Try No2
rs_UserAccess.Source ="SELECT * FROM tbl_users WHERE username
= Session(‘MM_Username’)”
Message:
Microsoft OLE DB Provider for ODBC Drivers error '80040e14'
[Microsoft][ODBC Microsoft Access Driver] Undefined function
'Session' in expression.
/main.asp, line 186
Try No3
rs_UserAccess.Source ="SELECT * FROM tbl_users WHERE username
= Session(MM_Username)”
Message:
Microsoft OLE DB Provider for ODBC Drivers error '80040e14'
[Microsoft][ODBC Microsoft Access Driver] Undefined function
'Session' in expression.
/main.asp, line 186
Try No4
rs_UserAccess.Source ="SELECT * FROM tbl_users WHERE username
= Session Variable MM_Username"
Message:
Microsoft OLE DB Provider for ODBC Drivers error '80040e14'
[Microsoft][ODBC Microsoft Access Driver] Syntax error
(missing operator) in query expression 'username = Session Variable
MM_Username'.
/main.asp, line 186
Try No5
rs_UserAccess.Source ="SELECT * FROM tbl_users WHERE username
= MM_Username"
Message:
Microsoft OLE DB Provider for ODBC Drivers error '80040e10'
[Microsoft][ODBC Microsoft Access Driver] Too few parameters.
Expected 1.
/main.asp, line 186
Thanks in advance
Cheers
Downsy

Try this:
rs_UserAccess.Source = "SELECT * FROM tbl_users WHERE
username = " & Session("MM_Username")
Keep that on one line.
Ken Ford
Adobe Community Expert
Fordwebs, LLC
http://www.fordwebs.com
"Downsy42" <[email protected]> wrote in
message news:[email protected]...
> Hi
> I am trying to filter a recordset based on a session
variable. The session
> variable is passed from the login page via a username
which is their email
> address. This has been successful.
> However when I want to filter the users table -
tbl_users to show their first
> name it doesn't work.
> I followed the adobe help tutorial plus ahave tried
other combinations and I
> am now at a loss on where exactly I am going wrong.
> The recordset is rs_UserAccess
> I have a session variable called - MM_Username
> The table has 5 records of various users
>
> The code that I have fiddling with is -
>
> <%
> Dim rs_UserAccess
> Dim rs_UserAccess_numRows
>
> Set rs_UserAccess =
Server.CreateObject("ADODB.Recordset")
> rs_UserAccess.ActiveConnection =
MM_conn_sidecounter_STRING
> rs_UserAccess.Source = "SELECT * FROM tbl_users WHERE
username = MM_Username"
> rs_UserAccess.CursorType = 0
> rs_UserAccess.CursorLocation = 2
> rs_UserAccess.LockType = 1
> rs_UserAccess.Open()
>
> rs_UserAccess_numRows = 0
> %>
>
>
>
> Any help would be appreciated. I have outlined below the
different
> combinations I have tested.
>
>
> Try No1
> rs_UserAccess.Source ="SELECT * FROM tbl_users WHERE
username =
> Session("MM_Username")?
> Message:
> Microsoft VBScript compilation error '800a0401'
> Expected end of statement
> /main.asp, line 182
>
> Try No2
> rs_UserAccess.Source ="SELECT * FROM tbl_users WHERE
username =
> Session(?MM_Username?)?
> Message:
> Microsoft OLE DB Provider for ODBC Drivers error
'80040e14'
> [Microsoft][ODBC Microsoft Access Driver] Undefined
function 'Session' in
> expression.
> /main.asp, line 186
>
> Try No3
> rs_UserAccess.Source ="SELECT * FROM tbl_users WHERE
username =
> Session(MM_Username)?
> Message:
> Microsoft OLE DB Provider for ODBC Drivers error
'80040e14'
> [Microsoft][ODBC Microsoft Access Driver] Undefined
function 'Session' in
> expression.
> /main.asp, line 186
>
> Try No4
> rs_UserAccess.Source ="SELECT * FROM tbl_users WHERE
username = Session
> Variable MM_Username"
> Message:
> Microsoft OLE DB Provider for ODBC Drivers error
'80040e14'
> [Microsoft][ODBC Microsoft Access Driver] Syntax error
(missing operator) in
> query expression 'username = Session Variable
MM_Username'.
> /main.asp, line 186
>
> Try No5
> rs_UserAccess.Source ="SELECT * FROM tbl_users WHERE
username = MM_Username"
> Message:
> Microsoft OLE DB Provider for ODBC Drivers error
'80040e10'
> [Microsoft][ODBC Microsoft Access Driver] Too few
parameters. Expected 1.
> /main.asp, line 186
>
> Thanks in advance
> Cheers
> Downsy
>
>
>

Coldfusion session variables being lost

ok so when my users login I establish session variables. one of these is employee id. in my Application.cfc I have this at the top:
<cfscript>
this.name = "My App";
this.sessiontimeout=CreateTimeSpan("0", "0", "45", "0");
this.SESSIONMANAGEMENT="YES";
this.SetClientCookies = "true";
this.setDomainCookies = "true";
</cfscript>
i also set the timeout for sessions at 45 in the CFadmin too.
after a successfull login i capture their session.employeenumber by authenticating through our corporate LDAP. no problem there. note: this app has run smoothly for 6+ years now but something has recently gone wrong.
on every page i reference a file in my application directory called "check_session.cfm" like this:
<cfmodule template="/myApp/Tags/check_session.cfm">
In that file I have code that checks for the existence of the session.employee_number. if it doesn't exist they either timed out or book-marked a page in the app in which they need to be logged in to view:
<cflock timeout="30" throwontimeout="Yes" type="READONLY" scope="SESSION">

<CFIF NOT IsDefined("Session.employee_number")>
     <CFLOCATION URL="http://#cgi.HTTP_HOST#/myApp/LoginAgain.cfm">
</CFIF>
</cflock>
every now and then (i'd say on average 5 times per week) i get an error message from a user (i re-direct all errors to my email with diagnostic info). the error reads "Element EMPLOYEE_NUMBER is undefined in SESSION". when i look at the page the error came from i see my call to the check_session.cfm file about 50 lines above where this error happened when i tried to reference session.employee_number. why wouldn't it not find it and re-direct the user to the timeout page? i can never duplicate this error on my machine either... i always get the right result without the error message. its a random, sporadic, intermittent error.

Here is the diagnostic error information. Where you see [omitted] i've changed the URL for the purposes of displaying this detail in a public forum:
struct
Browser
Mozilla/4.0   (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR   2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0;   InfoPath.2; .NET4.0C; .NET4.0E; MS-RTC LM 8)
DateTime
{ts   '2011-02-21 20:59:21'}
Diagnostics
Element   EMPLOYEENUMBER is undefined in SESSION. <br>The error occurred on line   162.
GeneratedContent
<!DOCTYPE   html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">   <html xmlns="http://www.w3.org/1999/xhtml">    <head>  <title>My Home</title> <meta   http-equiv="Content-Type" content="text/html;   charset=iso-8859-1" /> <link rel="stylesheet"   href="mm_training.css" type="text/css" /> <link   rel="stylesheet" type="text/css" href="../template/organized.css">   </head> <body bgcolor="#ffffff"   onLoad="onInit()">
HTTPReferer
http://[omitted]/mypage/myhome.cfm?CFID=101686&CFTOKEN=53097237
Mailto
[empty   string]
Message
Element   EMPLOYEENUMBER is undefined in SESSION.
QueryString
[empty   string]
RemoteAddress
10.x.x.x   [remote address omitted for purposes of this forum]
RootCause
struct
Detail
[empty     string]
ErrNumber
0
Message
Element     EMPLOYEENUMBER is undefined in SESSION.
Resolvedname
SESSION
StackTrace
coldfusion.runtime.UndefinedElementException:     Element EMPLOYEENUMBER is undefined in SESSION. at     coldfusion.runtime.CfJspPage.resolveCanonicalName(CfJspPage.java:1659) at     coldfusion.runtime.CfJspPage._resolve(CfJspPage.java:1612) at     coldfusion.runtime.CfJspPage._resolveAndAutoscalarize(CfJspPage.java:1747)     at     coldfusion.runtime.CfJspPage._resolveAndAutoscalarize(CfJspPage.java:1740)     at cfmyhome2ecfm1641837815._factor14(D:\[path_omitted]\mypage\myhome.cfm:162)     at cfmyhome2ecfm1641837815.runPage(D:\[path_omitted]\mypage\myhome.cfm:1)     at coldfusion.runtime.CfJspPage.invoke(CfJspPage.java:196) at     coldfusion.tagext.lang.IncludeTag.doStartTag(IncludeTag.java:370) at     coldfusion.filter.CfincludeFilter.invoke(CfincludeFilter.java:65) at     coldfusion.filter.ApplicationFilter.invoke(ApplicationFilter.java:273) at     coldfusion.filter.RequestMonitorFilter.invoke(RequestMonitorFilter.java:48)     at coldfusion.filter.MonitoringFilter.invoke(MonitoringFilter.java:40) at     coldfusion.filter.PathFilter.invoke(PathFilter.java:86) at     coldfusion.filter.ExceptionFilter.invoke(ExceptionFilter.java:70) at     coldfusion.filter.ClientScopePersistenceFilter.invoke(ClientScopePersistenceFilter.java:2 8)     at coldfusion.filter.BrowserFilter.invoke(BrowserFilter.java:38) at     coldfusion.filter.NoCacheFilter.invoke(NoCacheFilter.java:46) at     coldfusion.filter.GlobalsFilter.invoke(GlobalsFilter.java:38) at     coldfusion.filter.DatasourceFilter.invoke(DatasourceFilter.java:22) at     coldfusion.CfmServlet.service(CfmServlet.java:175) at     coldfusion.bootstrap.BootstrapServlet.service(BootstrapServlet.java:89) at     jrun.servlet.FilterChain.doFilter(FilterChain.java:86) at     coldfusion.monitor.event.MonitoringServletFilter.doFilter(MonitoringServletFilter.java:42 )     at coldfusion.bootstrap.BootstrapFilter.doFilter(BootstrapFilter.java:46)     at jrun.servlet.FilterChain.doFilter(FilterChain.java:94) at     jrun.servlet.FilterChain.service(FilterChain.java:101) at jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:106)     at jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42) at     jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java:286)     at jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:543)     at     jrun.servlet.jrpp.JRunProxyService.invokeRunnable(JRunProxyService.java:203)     at     jrunx.scheduler.ThreadPool$DownstreamMetrics.invokeRunnable(ThreadPool.java:320)     at jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.java:428)     at     jrunx.scheduler.ThreadPool$UpstreamMetrics.invokeRunnable(ThreadPool.java:266)     at jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)
TagContext
array
1
struct
COLUMN
0
ID
LINE
162
RAW_TRACE
at         cfmyhome2ecfm1641837815._factor14(D:\[path_omitted]\mypage\myhome.cfm:162)
TEMPLATE
D:\[path_omitted]\mypage\myhome.cfm
TYPE
CFML
2
struct
COLUMN
0
ID
CF_MYHOME
LINE
1
RAW_TRACE
at         cfmyhome2ecfm1641837815.runPage(D:\[path_omitted]\mypage\myhome.cfm:1)
TEMPLATE
D:\[path_omitted]\mypage\myhome.cfm
TYPE
CFML
Type
Expression
element
EMPLOYEENUMBER
objectType
object of java.lang.Class
Class       Name
java.lang.Class
Methods
Method
Return Type
asSubclass(java.lang.Class)
java.lang.Class
cast(java.lang.Object)
java.lang.Object
desiredAssertionStatus()
boolean
forName(java.lang.String,         boolean, java.lang.ClassLoader)
java.lang.Class
forName(java.lang.String)
java.lang.Class
getAnnotation(java.lang.Class)
java.lang.annotation.Annotation
getAnnotations()
java.lang.annotation.Annotation[]
getCanonicalName()
java.lang.String
getClassLoader()
java.lang.ClassLoader
getClasses()
java.lang.Class[]
getComponentType()
java.lang.Class
getConstructor(java.lang.Class[])
java.lang.reflect.Constructor
getConstructors()
java.lang.reflect.Constructor[]
getDeclaredAnnotations()
java.lang.annotation.Annotation[]
getDeclaredClasses()
java.lang.Class[]
getDeclaredConstructor(java.lang.Class[])
java.lang.reflect.Constructor
getDeclaredConstructors()
java.lang.reflect.Constructor[]
getDeclaredField(java.lang.String)
java.lang.reflect.Field
getDeclaredFields()
java.lang.reflect.Field[]
getDeclaredMethod(java.lang.String,         java.lang.Class[])
java.lang.reflect.Method
getDeclaredMethods()
java.lang.reflect.Method[]
getDeclaringClass()
java.lang.Class
getEnclosingClass()
java.lang.Class
getEnclosingConstructor()
java.lang.reflect.Constructor
getEnclosingMethod()
java.lang.reflect.Method
getEnumConstants()
java.lang.Object[]
getField(java.lang.String)
java.lang.reflect.Field
getFields()
java.lang.reflect.Field[]
getGenericInterfaces()
java.lang.reflect.Type[]
getGenericSuperclass()
java.lang.reflect.Type
getInterfaces()
java.lang.Class[]
getMethod(java.lang.String,         java.lang.Class[])
java.lang.reflect.Method
getMethods()
java.lang.reflect.Method[]
getModifiers()
int
getName()
java.lang.String
getPackage()
java.lang.Package
getProtectionDomain()
java.security.ProtectionDomain
getResource(java.lang.String)
java.net.URL
getResourceAsStream(java.lang.String)
java.io.InputStream
getSigners()
java.lang.Object[]
getSimpleName()
java.lang.String
getSuperclass()
java.lang.Class
getTypeParameters()
java.lang.reflect.TypeVariable[]
isAnnotation()
boolean
isAnnotationPresent(java.lang.Class)
boolean
isAnonymousClass()
boolean
isArray()
boolean
isAssignableFrom(java.lang.Class)
boolean
isEnum()
boolean
isInstance(java.lang.Object)
boolean
isInterface()
boolean
isLocalClass()
boolean
isMemberClass()
boolean
isPrimitive()
boolean
isSynthetic()
boolean
newInstance()
java.lang.Object
toString()
java.lang.String
StackTrace
coldfusion.runtime.UndefinedElementException:   Element EMPLOYEENUMBER is undefined in SESSION. at coldfusion.runtime.CfJspPage.resolveCanonicalName(CfJspPage.java:1659)   at coldfusion.runtime.CfJspPage._resolve(CfJspPage.java:1612) at   coldfusion.runtime.CfJspPage._resolveAndAutoscalarize(CfJspPage.java:1747) at   coldfusion.runtime.CfJspPage._resolveAndAutoscalarize(CfJspPage.java:1740) at   cfmyhome2ecfm1641837815._factor14(D:\[path_omitted]\mypage\myhome.cfm:162) at   cfmyhome2ecfm1641837815.runPage(D:\[path_omitted]\mypage\myhome.cfm:1) at   coldfusion.runtime.CfJspPage.invoke(CfJspPage.java:196) at coldfusion.tagext.lang.IncludeTag.doStartTag(IncludeTag.java:370)   at coldfusion.filter.CfincludeFilter.invoke(CfincludeFilter.java:65) at   coldfusion.filter.ApplicationFilter.invoke(ApplicationFilter.java:273) at   coldfusion.filter.RequestMonitorFilter.invoke(RequestMonitorFilter.java:48)   at coldfusion.filter.MonitoringFilter.invoke(MonitoringFilter.java:40) at   coldfusion.filter.PathFilter.invoke(PathFilter.java:86) at   coldfusion.filter.ExceptionFilter.invoke(ExceptionFilter.java:70) at   coldfusion.filter.ClientScopePersistenceFilter.invoke(ClientScopePersistenceFilter.java:2 8)   at coldfusion.filter.BrowserFilter.invoke(BrowserFilter.java:38) at   coldfusion.filter.NoCacheFilter.invoke(NoCacheFilter.java:46) at   coldfusion.filter.GlobalsFilter.invoke(GlobalsFilter.java:38) at   coldfusion.filter.DatasourceFilter.invoke(DatasourceFilter.java:22) at   coldfusion.CfmServlet.service(CfmServlet.java:175) at   coldfusion.bootstrap.BootstrapServlet.service(BootstrapServlet.java:89) at   jrun.servlet.FilterChain.doFilter(FilterChain.java:86) at   coldfusion.monitor.event.MonitoringServletFilter.doFilter(MonitoringServletFilter.java:42 )   at coldfusion.bootstrap.BootstrapFilter.doFilter(BootstrapFilter.java:46) at   jrun.servlet.FilterChain.doFilter(FilterChain.java:94) at jrun.servlet.FilterChain.service(FilterChain.java:101)   at jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:106) at   jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42) at   jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java:286) at   jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:543) at   jrun.servlet.jrpp.JRunProxyService.invokeRunnable(JRunProxyService.java:203)   at   jrunx.scheduler.ThreadPool$DownstreamMetrics.invokeRunnable(ThreadPool.java:320)   at jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.java:428)   at   jrunx.scheduler.ThreadPool$UpstreamMetrics.invokeRunnable(ThreadPool.java:266)   at jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)
TagContext
array
1
struct
COLUMN
0
ID
LINE
162
RAW_TRACE
at       cfmyhome2ecfm1641837815._factor14(D:\[path_omitted]\mypage\myhome.cfm:162)
TEMPLATE
D:\[path_omitted]\mypage\myhome.cfm
TYPE
CFML
2
struct
COLUMN
0
ID
CF_MYHOME
LINE
1
RAW_TRACE
at       cfmyhome2ecfm1641837815.runPage(D:\[path_omitted]\mypage\myhome.cfm:1)
TEMPLATE
D:\[path_omitted]\mypage\myhome.cfm
TYPE
CFML
Template
/[omitted]/mypage/myhome.cfm
Type
coldfusion.runtime.CfErrorWrapper

How to remove gap in sequence?

Hi,
SELECT MENU_ITEMID.NEXTVAL INTO :MENU_ITEM.M_ITEM_ID
FROM SYS.DUAL;
EXCEPTION
WHEN OTHERS THEN MESSAGE ('FAILED');
RAISE FORM_TRIGGER_FAILURE;
I have applied the above PRE-INSERT trigger on my MENU_ITEM FORM.
I was inserting values but when I was inserting the 53th item my PC was struck by a power failure, I did not commit or Rollback and next item when I rebooted my system and tried to insert the 53th item in my form it gave me a gap and jumped to 54th item directly.
Now How can I remove this gap?
I tried to insert the ids manually using INSERT command,
INSERT INTO MENU_ITEM VALUES (53, 'AAAA');
INSERT INTO MENU_ITEM VALUES (54, 'BBAAA');
INSERT INTO MENU_ITEM VALUES (55, 'UUAA');
but when I opened the application form then it showed the wrong order of id column.
like
53
55
54
and so on.
I deleted the newly inserted records using this command, DELETE from MENU_ITEM where M_ITEM_ID in(53,54,55);
COMMIT;
and then i queried the nextval of sequence.
and it was 55.
now I want tthe solution to solve this.
Please Help me that where I can find the solution?
Thanks In advance
Natalia

I'm afraid you do not understand how a SEQUENCE works.
A sequence is a "one-time" sheet. Once we have got a number through NEXTVAL the sequence can never give us that number again (unless we created the sequence with the CYCLE clause, in which case we'll see it again, eventually). NEXTVAL is a piece of DDL, so we cannot roll it back. We can only fill in the gaps manually, as you did. You, however, overshot and inserted a row with an ID 55 that was in advance of the last number assigned by the sequence.
Also note that the SEQUENCE number has a CACHE; this is the default behaviour, because it is memory efficient. As a side effect, if the database goes down, assigned numbers in the cache may be lost. We can avoid this with the NOCACHE option, but it makes sequence usage slower. It depends: do we need every number in the range or can we cope with gaps? As most sequence usage is simply to assign uniqueness gaps do not matter. They do matter in some circumstances, e.g. in an audit subsystem.
The LAST_NUMBER column on USER_SEQUENCES shows the last number assigned. But, as the example below shows, beware. Before we have called the sequence in this session, LAST_NUMBER shows the actual last number given by the sequence. Once the sequence has satisfied a NEXTVAL call the LAST_NUMBER column shows the last number in the current cache. We can see the actual last number assigned with a CURRVAL statement.
Regards, APC
P.S. The rows in your block are being displayed in the "wrong" order because your block does not have an ORDER BY property to sort rows by ID.
SQL> CREATE SEQUENCE test_seq;
Sequence created.
SQL> SELECT last_number, cache_size
2 FROM   user_sequences
3 WHERE sequence_name = 'TEST_SEQ';
LAST_NUMBER CACHE_SIZE
          1         20
SQL> SELECT test_seq.NEXTVAL FROM dual;
   NEXTVAL
         1
SQL> SELECT last_number, cache_size
2 FROM   user_sequences
3 WHERE sequence_name = 'TEST_SEQ';
LAST_NUMBER CACHE_SIZE
         21         20
SQL> SELECT test_seq.NEXTVAL FROM dual;
   NEXTVAL
         2
SQL> SELECT last_number, cache_size
2 FROM   user_sequences
3 WHERE sequence_name = 'TEST_SEQ';
LAST_NUMBER CACHE_SIZE
         21         20
SQL> SELECT test_seq.NEXTVAL FROM dual;
   NEXTVAL
         3
SQL> ROOLBACK;
Rollback complete.
SQL> SELECT last_number, cache_size
2 FROM   user_sequences
3 WHERE sequence_name = 'TEST_SEQ';
LAST_NUMBER CACHE_SIZE
         21         20
SQL> SELECT test_seq.NEXTVAL FROM dual;
   NEXTVAL
         4
SQL> SELECT last_number, cache_size
2 FROM   user_sequences
3 WHERE sequence_name = 'TEST_SEQ';
LAST_NUMBER CACHE_SIZE
         21         20
SQL> SELECT test_seq.CURRVAL FROM dual;
   NEXTVAL
         4
SQL>

Session manager backup fail

I just got the following message and get similar messages
This operation failed due to a file access error:
undefined(undefined)
backup.session
undefined:undefined

hello commus, for support about an addon please directly contact the extension developers through the means provided at the [https://addons.mozilla.org/firefox/addon/session-manager/ homepage] - they can likely give you more detailed guidance and are the only ones who can fix bugs or make necessary adjustments in the addon. thank you...

Sequence initilization

1) Why initialization of the sequence with NEXTVAL is required? when we create a sequence Before we use CURRVAL for a sequence in our session, we must first initialize the sequence with NEXTVAL otherwise it will give an error as 'ORA-08002: sequence SEQ1.CURRVAL is not yet defined in this session' .
2)Where exactly on the disk the sequence nextval is stored if we are using a nocache option while creating a sequence. To check the sequence related data I queried "SYSTEM.SEQ" Tablespace, I can describe this table but cannot see the contents giving an error as 'ORA-00942: table or view does not exist'.

Welcome to the forum!
Whenever you post provide your 4 digit Oracle version (result of SELECT * FROM V$VERSION
>
1) Why initialization of the sequence with NEXTVAL is required? when we create a sequence Before we use CURRVAL for a sequence in our session, we must first initialize the sequence with NEXTVAL otherwise it will give an error as 'ORA-08002: sequence SEQ1.CURRVAL is not yet defined in this session' .
>
The reason is because a sequence can be used by more than one session. Each session first needs to get a sequence number before it can use it. When you (a session) use NEXTVAL to 'get' a sequence number Oracle increments the number (using the INCREMENT BY valuel) so the next session using NEXTVAL won't get your number.
So CURRVAL does not return the current sequence value that is stored in the SYS.SEQ$ table; CURRVAL returns the current value of the sequence that your session is using. If it returned the actual value in the SEQ$ table that value might be used by someone else using NEXTVAL and then if you used it you would be using a duplicate.
>
2)Where exactly on the disk the sequence nextval is stored if we are using a nocache option while creating a sequence. To check the sequence related data I queried "SYSTEM.SEQ" Tablespace, I can describe this table but cannot see the contents giving an error as 'ORA-00942: table or view does not exist'.
>
The actual table is the SYS.SEQ$ table. The xxx_SEQUENCES views (e.g. ALL_SEQUENCES, USER_SEQUENCES) are base on that table.
If the sequence uses NOCACHE then any session using NEXTVAL causes the SYS.SEQ$ table to be accessed and incremented. That is a VERY inefficient serial process and can severely affect performance in a multiuser environment.
When you use CACHE (e.g. CACHE 100) then the first session that uses NEXTVAL causes Oracle to load 100 values values into memory and the next NEXTVAL that any session issues will get a number from that memory cache. Since memory accesses are very fast this minimizes the performance impact.
select * from all_sequences where sequence_name = 'DEPARTMENTS_SEQ'
SEQUENCE_OWNER,SEQUENCE_NAME,MIN_VALUE,MAX_VALUE,INCREMENT_BY,CYCLE_FLAG,ORDER_FLAG,CACHE_SIZE,LAST_NUMBER
HR,DEPARTMENTS_SEQ,1,9990,10,N,N,0,280See CREATE SEQUENCE in the SQL Language doc
http://docs.oracle.com/cd/B28359_01/server.111/b28286/statements_6015.htm
But be aware that this quote from the documentation is misleading
>
After a sequence is created, you can access its values in SQL statements with the CURRVAL pseudocolumn, which returns the current value of the sequence, or the NEXTVAL pseudocolumn, which increments the sequence and returns the new value.
>
As you already know, in spite of what that quote says you CANNOT use CURRVAL until after you have used NEXTVAL.

Trouble with Session Management

I am trying to assess how many people I lose on my site
because they dont have cookies enabled. when I disable cookies in a
browser and <cfoutput> a urltoken, it prints out a new value
every time I refresh the page, as expected. But when I try to log
the CFID when people come to my home page so that I may pass it
around through the site, I get some "element CFID undefined in
session" errors

thanks for the help. I thought Id tell you more about what I
am doing and see if you have comments - we use google to market our
company so clicks are costing us big bucks. currently, our sites
rely on session management to operate, so I realize that folks
having cookies off is really hurting us. All the references I can
find tote passing the session.URLToken around the site to make it
cookie independent. I havent done this yet, first im trying to get
a handle on how many people have cookies off (like you are), and
where people are coming from to see if we are having click fraud
(which we are very suspicious of).
Is this what you would do (passing the URLToken around)? Any
other comments you have would be very much appreciated.

J2K errors - Session time outs

Need some help regarding Cold fusion Version : 9.0.1 and we recently applied Cumulative Hotfix 2 to remediate the session time outs,
Still we are getting session time outs.
Ex :Error: Element SECURITY_ATTRIBUTE_LIST is undefined in SESSION.
Error: Element USER_LOGIN_NAME is undefined in SESSION.
These are the sample errors we are getting. Can any one help with this.
Thanks and Regards
Raja

Those are likely to be coding errors. The place to look is where you write/set the values of SESSION.SECURITY_ATTRIBUTE_LIST and SESSION.USER_LOGIN_NAME for the first time. Could you show us the code?

Sequence undefined in session ???

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