are IMAQdx sessions autodisposed?

Similar Questions

• How do I know if an IMAQdx session is open or not?

  I, me again.

  I would like to know if there is a way to know if an IMAQdx session is already open or not. I did a Subvi, which manages part of imagery of a more complex software. My problem is simple: I need to open and close the session of IMAQdx. If I do this whenever my VI is called I have a delay of a few seconds and I don't really like it. So I thought that I could login the first time that my VI is called, to use with the session already open time and close when the main program, perhaps through a Boolean flag.

  Thank you

  Francesco.

  I found a solution. I used the "not a number/path/Refnum?" function on the palette of "comparison". If the session is not open, but the function returns 'true', otherwise it return "false". Much more simple than I thought!

• Is there a way to determine if a camera IMAQdx session is still valid or not?

  If it is valid, IMAQdx Open Camera.vi will return an error.

  If it is not valid, IMAQdx Close Camera.vi will return an error.  And IMAQdx close Camera.vi is very slow during the in camera session is invalid.

  I mean IMAQdx Camera.vi open have not yet been called, or IMAQdx Camera.vi Close has been called.

  Although there is no node property for this purpose, other properties, such as the name of provider of camera, are acceptable workaround solutions.

• What are user sessions?

  What and why are there user Sessions if there is only one user on Microsoft windows?

  What and why are there user Sessions if there is only one user on Microsoft windows?

  In fact, Windows XP is a multi-user system.  The Fast User Switching feature allows simultaneously to several user accounts to log on to the computer.  Although a single user account (the user session) at the same time is able to use the keyboard and display, other user, including open applications sessions, continue to run in the background.

• Switch between Cam ID and (LabVIEW session)?

  Hello

  I use a camera USB under LabView. So I have to implement some low level functions that happens in a provider dll. On the other hand, I have to use NOR-Imagdx function for identification. So far every part works without problem, while the cam provider uses a camera ID (integer value) to access the cam, Labview uses sessions to connect the cam.

  Question:

  -J' I need two parts for the low level functions AND the LV - fucntions in a vi. How can I connect the cam when the dll uses an ID of the Cam and the NOR-Imaqdx sessions? How can I "convert" or bring together the two parts of code?

  Thanks in advance

  Hello

  The short answer is: you can't.

  Unless the pilots IDS they allowed camera to be open simultaneously with their own SDK as well as via DirectShow (which uses the IMAQdx here) then the two cannot access the same device at the same time.

  Eric

• Data types IMAQdx in LV8.2 & amp; LV2009

  I was converting a project containing IMAQdx between LV8.2 and LV2009 features and encountering a problem. I narrowed down it to a Frame done recording the event using the IMAQdx Session and then try to access the dynamic variables in this case.

  This is the code in LV8.2:

  

  (I know it doesn't really work, but it should be noted that the CtlRef indicator, while being under duress, is actually accessible)

  Exactly the same piece of code in LV2009 gives an error of cut wire, as follows:

  

  The error on the wire, it's "you have connected two terminals of different types. The source type is user defined Refnum Tag. The type of the sink is typedef "IMAQdx.ctl" IMAQdx (IMAQdx, IMAQdx). »

  Poking around a bit, I tried a wiring property node to the node of the event CtlRef, but I can't work on which property to use to return to the camera. Any ideas? What is the right way to solve this problem? Or is there something else I have not spotted?

  I have attached the VI to facilitate control (LV8.2).

  Thanks for any help!

  I see the same behavior, let me check what is happening here.

  But you could also do as follows:

  

• Session locked in AP Invoice table problem

  Hi all

  EBS R12.1.3

  RHEL5

  How to kill session locked in EBS? How to find the session id, serial No.?

  
  

  We encounter error of "could not be made", means that you are the session is locked on the invoice line. "." There are two reasons for this error,

  1 another session is present for the same rendering user was trying to change the application. Maybe at the time you make a post, someone is accessing or also perform matching IN. (11236) at the same time

  2. a bad disconnection.  on the screenshot below, the right way of logging on is number 2. When user chooses to log out using the 1 number or using an 'X', the session is still active so when you access the same record again, it may result in the error "might reserve no record."

  

  Help, please...

  Thank you very much

  JC

  Hi, Jenna.

  You can see blog post below to find the session blocking and kill him.

  Who is blocking other users. Oracle on cloud

  Kind regards

  Jonathan

• DBMS_SYSTEM allows you to change a parameter string for the other sessions value?

  Hello

  I want dbms_system allows you to change a string to another session parameter. Aims to enable cursor_sharing = FORCE for currently connected sessions.

  For future connections, this will be done by a trigger connection, but there are several sessions of app server that will remain connected for weeks or months without change.

  dbms_system contains procedures to set integers and Boolean values in other sessions, but I can't find anything on char/string parameters. For what is documented here Oracle DBMS_SYSTEM it seems that nothing like this available.

  DB version is 11.2.0.3. Is it possible to do it on this version?

  Is it perhaps a sql to activate cursor_sharing = FORCE (and event set through dbms_system.set_ev)?

  Concerning

  Thomas

  DBMS_SYSTEM is an old man who was not formally documented.

  DBMS_MONITOR is a current which * is * documented, but it has no documented method to set the cursor (for example).

  There is no documented way I know to do what you suggest. If you really must do it this way, I would recommend that you open an SR with Oracle Support to ask them. Otherwise, just schedule some downtime for your application and implement the logon trigger.

• Apex 4.2.2.0.11 item session state page appears

  I tried to comment on that, but find week. This problem is not... all the page elements are in SESSION STATE. Anyone encountered this problem?

  Hello

  See if that helps

  https://forums.Oracle.com/message/10720310

  Kind regards

  Jari

• Are constants of body of the PL/SQL Package in the shared or private area

  Based on that it is not clear to me if body Package PL/SQL constants are stored in the shared or private area.
  
  http://docs.Oracle.com/CD/B28359_01/server.111/b28318/memory.htm
  
  "PL/SQL program units and the Shared Pool
  
  Oracle database treats PL/SQL program units (anonymous blocks, procedures, functions, packages and triggers in database) much the same way he treats the individual SQL statements. Oracle database allocates a shared area to hold the shape analyzed, compiled a program unit. Oracle database allocates a private space to hold values specific to the session who runs the program unit, including local, global and package variables (also known as the package is instantiated) and stamps of SQL execution. If more than one user is running the same program unit, a place unique and shared is used by all users, while each user runs a separate copy of his own private SQL area containing session-specific values.
  
  The individual SQL statements contained in a PL/SQL program unit are processed as described in the previous sections. Despite their origins within a PL/SQL program unit, these SQL statements use a shared area to hold their analysed representations and a private space for each session, who executes the statement. »
  
  
  I am also curious to know what are the differences in fine grain in a perspective of memory and performance (multisession) for the two examples below. One is more effective?
  
  
  Example 1.
  
  create or replace
  package body
  application_util
  as
  
  c_create_metadata constant varchar2 (6000): =...
  
  procedure process_xxx
  (
  )
  as
  Start
  ...
  end process_xxx;
  
  end application_util;
  
  vs.
  
  Example 2.
  
  create or replace
  package body
  application_util
  as
  
  procedure process_xxx
  (
  )
  as
  
  c_create_metadata constant varchar2 (6000): =...
  
  Start
  ...
  end process_xxx;
  
  end application_util;

  881398 wrote:

  But I still have to ask because it seems still more particularly in example 1 that the constant can be attributed to the use that the actual value could be a pointer to a constant string value in a table of symbols or something related to the compilation unit. I'm always curious in a perspective of management of memory if there is a difference between the example 1 and example 2, and if one is better and why.

  The storage is real, references to this storage internal to the PL/SQL engine. And irrelevant to the PL/SQL programmer.

  This question is really a disagreement over the shape is better: example 1 or example 2. I prefer the 1 example, for readability, testability, etc., and so the question is where is the performance of the memory/differences and or is it just preference of developer.

  I agree with rp0428 - he raised a very important point that it is a problem of scope and nothing else.

  Basically is there any trade-off between using one shape on the other insofar as the performance and memory management?

  Not really. Most runtime engines release not just actual system memory when a variable is out of range. the malloc() calls are expensive. Free() calls are expensive (and are not always the result in usable free memory which can be malloc'ed again).

  Several execution engines use what is called a managed heap. A malloc is made of a new process when it is initialized. The heap memory / managed malloc'ed is adjacent. Pointer allocation of memory for this process is initially pointing to the base of the managed heap. As the process allocates / uses memory, the pointer is moved just advance in the managed heap, which indicates the HWM as such - the beginning of the 'free' memory in the heap. Allocation is sequential.

  Reset of your variable execution, or releasing your runtime object, does not reset the HWM as other objects/variables can still be used and located after this place in the bunch. In this case set him free memory by releasing / resetting the language variables does not restore the kernel memory.

  Memory management is a sophisticated process entirely processed by the engine running - and best left to the runtime engine. As you as a programmer do not explicitly control the memory management, it is not a good idea to try to write code that artificially attempt to use 'better' for the runtime engine memory management. The next version of the runtime of that aura of new features, optimizations and so on — and your interference in your code to get the "valorisation" of memory can happen just bite you not bad after an upgrade to execution.

  Regarding the performance aspect - variable initialization is dependent on scope. In order to have a global scope means a one-time initialization, whereas a private scope (created each call) is a multiple unit. If the first is a little faster than the latter.

  However, the performance differences are tiny - IMO too small to justify this as a valid consideration to spend in addition to the decision of functional design on what possibilities a variable or a constant need to have.

  SQL> create or replace package FooLib1 as
    2          procedure Exec;
    3  end;
    4  /
  
  Package created.
  
  SQL>
  SQL> create or replace package body FooLib1 as
    2          const1  constant varchar2(32767) := rpad('-',10000,'-');
    3
    4          procedure Exec is
    5                  var1    varchar2(32767);
    6          begin
    7                  var1 := const1;
    8          end;
    9  end;
   10  /
  
  Package body created.
  
  SQL>
  SQL>
  SQL> create or replace package FooLib2 as
    2          procedure Exec;
    3  end;
    4  /
  
  Package created.
  
  SQL>
  SQL> create or replace package body FooLib2 as
    2          procedure Exec is
    3                  const1  constant varchar2(32767) := rpad('-',10000,'-');
    4                  var1    varchar2(32767);
    5          begin
    6                  var1 := const1;
    7          end;
    8  end;
    9  /
  
  Package body created.
  
  SQL>
  SQL> set timing on
  SQL> exec for i in 1..100000 loop FooLib1.Exec; end loop;
  
  PL/SQL procedure successfully completed.
  
  Elapsed: 00:00:00.28
  SQL> exec for i in 1..100000 loop FooLib2.Exec; end loop;
  
  PL/SQL procedure successfully completed.
  
  Elapsed: 00:00:00.74
  SQL> 
  

  A second difference 0.0000046 in a single execution for FooLib.Exec between the use of package for the constant scope, against increased private. Which means that the issue of the scope is not a decision of the performance. Not when improving performance overhead is 0,0046 millisecs.

• Killed the remaining sessions in the session $ v

  Hello
  
  There are 42 sessions that are KILLED but still present in the view v$ session. v$ Resource_limit must keep 300 sessions. My question is: are these sessions killed count for example if session $ v shows 250 lines and 50 are marked Killed. 200 sessions will be counted or 250?
  
  Secondly, how can I KILL all open or multiple sessions or find them at the level of the Unix operating system which process id to kill at the level of the OS also?
  

  select sid,serial#,osuser from v$session where status='KILLED';
  
         SID    SERIAL# OSUSER                                                       
  ---------- ---------- ---------------
       56      8542 SYSTEM     
  - - 
  42 rows selected

  Thank you very much in advance.
  
  Concerning

  Is it possible that I have kill all sessions that are marked as being KILLED to CHANGE the SYSTEM COMMAND?

  No such statement available, you have to kill one by one with alter system kill session command but you can generate all the cmd like

  select 'alter system kill session ' || '''' || sid || ',' || serial# || '''' || ' immediate;' from v$session
  where status='KILLED';
  

  There is a PROCEDURE that is created for the normal user to kill user sessions

  put Word IMMEDIATE in alter system kill command inside the procedure.

• Unpublished IMPORT sessions

  I'm working on a project that uses parameters impdp and control files.
  
  Some of these sessions have been terminated not free in the past, and when I return to use the same parameter files he said "there are already sessions" for the parameter JOB_NAME.
  
  Given the disgraceful death, I imagine that some entry somewhere was not removed.
  
  But exactly which input on what administrative table made IMPORT/Datapump sessions so that values val is disabled, or what administrative process is required to clear all the remaining threads of that old session?

  Unfinished jobs will be a table laying around. Run this query to view all the data pump tasks that are still available:

  Select * from sys.dba_datapump_jobs;

  from there, look at the status of the task. I don't remember the values, but it should be clear which ones can be deleted. Everything you want to remove, and then follow these steps:

  drop table owner_name.job_name;

  I can't think of anything, you have to do to get rid of jobs failed/stopped.

  Dean

• Kill several session

  Hello
  
  There are 100 sessions are active in the database, which is the best way to kill all the session using a single query.

  is it possible or not?

  Yes, with a bit of Pl/Sql, something like this (connected as SYS)

  SQL> declare
    2     str varchar2(100);
    3  begin
    4     for S in (select sid,serial# from v$session where username is not null
    5         and username != 'SYS')
    6     loop
    7         str := 'alter system kill session '||chr(39)||S.sid||','||S.serial#||chr(39);
    8         execute immediate str;
    9     end loop;
   10  end;
  

• Search for users with the CREATE SESSION privilege.

  Hello
  
  Can someone tell me a way to find all users in the database which are CREATE SESSION privilege - directly or through certain roles?
  
  I thought that the following query-, but I think that it is still not a complete list.
  
  Select b.username, b.password from dba_sys_privs a, b dba_users
  where a.PRIVILEGE like "CREATE SESSION".
  and a.GRANTEE = b.username
  Union
  Select distinct b.username, b.password from dba_role_privs a, b dba_users
  where GRANTED_ROLE a. in (select dba_sys_privs dealer where the PRIVILEGE as "CREATE SESSION")
  and a.GRANTEE = b.username
  order by 1;
  
  Any input would be appreciated.
  
  Thank you
  HJ

  HJ,
  As you say since ROLES can mount cascade and CREATE SESSIOn privilege can be granted through roles, you must use the RECURSIVE technique to browse the hierarchy.
  There are several scripts available on the net. The one I use often is from the following link.

  http://www.adp-GmbH.ch/ora/Misc/recursively_list_privilege.html

  I hope this helps.
  VR,
  Sudhakar B.

  Published by: Sudhakar_B on July 9, 2010 12:39

• Windows 7 starts with a black screen (since the last update), if I go to the Task Manager.

  * Original title: startup error

  Windows 7 starts with a black screen (since the last update), if I go to the Task Manager and processes there are 2 sessions of "run once container" if I stop or another (they are two different size) windows lights up normally.

  Can someone help me please?

  Hello

  Thank you for the information.

  System Restore helped to heal the cause (last option of course)

  not sure about the Windows update that seemed to start the problem, but it is 2 instances of run once Wrapper were running.   I have found that if black screen you started the Task Manager, then selected and close it, either run it once windows Wrappers would begin.

  Anyway thanks for your help, we are now healed.