Identifying MWA sessions

Re: apps 11.5.10.
We sometimes have issues where a user is loged into a mobile device connected to MWA and then misplaces the device. They are then unable to log in again on a different device because they have a session still active. We would like to be able to identify their session on the database by their username so we can kill it, however we have so far found no way to do this as we can with apps etc.
Yes, the root cause is devices being misplaced and that is what should be fixed, however it would be useful for us to be able to identify sessions anyway.
Thanks,
John

Hi John;
Please see Hussein Sawwan great post
Session for mobile serever in R12
Session for mobile serever in R12
Regard
Helios

Similar Messages

How to Identify database sessions used by forms sso user sessions?

Hi:
When using forms with SSO, all database sessions are opened by the same OSUSER (usually oracle), from the same machine (usually the forms server) and by the same program (usually [email protected] [TNS V1-V3]).
I need a way to identify the database session (v$session) that is beeing used by a specific SSO user. By using SSO, we say implicitly that all users using that SSO resource will be connect to the database by a specific database user.
So, what can I do to identify the database session that a specific forms user is using ?
Thanks
Joao Oliveira

You could try something like the following in a when new form instance trigger:
declare
authenticated_username varchar2(30);
begin
authenticated_username := get_application_property(`sso_userid');
DBMS_APPLICATION_INFO.SET_CLIENT_INFO (
client_info IN VARCHAR2);
end;
This will store the sso userid in the client_info field of v$session.
I hope this works for you.
Randy McGregor

How to identify current session id (SID)?

How can a user identify their current session id if auditing is not enabled and account has connect role only? select * from v$mystat where rownum = 1; Fails (ora-942).

I think this is going to be difficult. I've included a completely convoluted idea I thought of using just CONNECT accessible objects (looking on a 9.2 database). You can't make this a stored procedure though (no direct privileges). I'll be interested to see if someone can come up with something easier.
declare
rindex binary_integer := dbms_application_info.set_session_longops_nohint;
slno binary_integer;
usid varchar2(24) := dbms_session.unique_session_id;
mysid number;
begin
dbms_application_info.set_session_longops(rindex, slno, 'get_sid:' || usid);
select sid
into mysid
from v$session_longops
where opname = 'get_sid:' || usid
and rownum = 1;
dbms_output.put_line(mysid);
end;Richard

How to check MWA session details in Oracle Apps R12

I am an Oracle Apps DBA. Current Issue is that sometimes users working with the RF Guns(Scanners) through telnet in MWA servers got hanged.
They ask to kill their sessions.
I do not know how to find the MWA loged in users sessions details. What I am able to find is , frm or web session details.
Could you please guide how to gather these MWA connection details, with database and server process and session details.
Thanks in advance for ur support.
Regards,
KMISRA

Koushikinath wrote:
I am an Oracle Apps DBA. Current Issue is that sometimes users working with the RF Guns(Scanners) through telnet in MWA servers got hanged.
They ask to kill their sessions.
I do not know how to find the MWA loged in users sessions details. What I am able to find is , frm or web session details.
Could you please guide how to gather these MWA connection details, with database and server process and session details.
Thanks in advance for ur support.
Regards,
KMISRAPlease see these docs.
MWA Server Hangs on R12 Environments [ID 559614.1]
Which parameters control the maximum number of user connections per MWA listener [ID 567214.1]
Mobile Web Applications (MWA) Troubleshooting Tips for Release 12 Mobile Web Applications Server [ID 782162.1]
Mobile Application Server - Advanced Configurations and Topologies for Mobile Web Applications (MWA)of E-Business Suite 11i and R12 [ID 1081404.1]
Mobile Web Applications Server - MWA Troubleshooting Tips for E-Business Suite 11i and R12 Oracle Mobile Application Server [ID 269991.1]
How to Enable WMS / MSCA Logging? [ID 338291.1]
Thanks,
Hussein

How to Identify ODBC sessions

This is on 10g. I need to derive session information for all uses who are connected to Oracle using ODBC connections. How can I achieve this? Thanks, R

NKU wrote:
Select username,status,program from v$session;Program will let you know the type through which connection is made.
RegardsWouldn't this be a bit indirect and depend on one's knowledge of the connecting program's methods?
SQL> col username for a20
1 Select username,
2    status,
3    program
4 from v$session
5* order by 1
SQL> /
USERNAME     STATUS   PROGRAM
SCOTT     INACTIVE MSACCESS.EXENow, nothing in the above really says I have an odbc connection. But I happen to know that that is probably the only way MSACCESS.EXE is going to get there. But what about less well-known programs?

Branch to URL identify session and record ID

Hi, I am trying to redirect page to itself after submission. I have created a branch which is conditional (request = UPDATE).
How so I identify a session ID and concatenate it with the URL?
Here is my URL "http://server:8081/apex/f?p=101:9:" + SESSION + "::NO::P9_RECORD_ID: " + :P9_RECORD_ID.
If you know a better way to redirect page to itself after submission please let me know.
Thanks
Robert

Robert,
No, not quite. If you don't set any page values in your branch, the page will load with whatever "default" values it has set up. If your page items are set to persist based on session state, then they'll stay the same...but most of the time, your items will be set to refresh themselves from the database. So you'll want to set the page_record_id field appropriately (I'm assuming that's the field that drives the data retrieval).
Does that help?
-David

How to uniquely identify a users session

Hi,
I need to identify a users session, I am aware of the wwctx_api.get_user function but this returns the user name, my problem is that, how do I identify a session, if the user logs on twice then the get_user() function is not unique basically I need to identify the session by some kind of id number and no the users name.
or can I stop a user logging on twice ?
thanks in antcipation.
SD.

it will cause problems in the database !..
in another words it is overloading objects.........

To get the Unique id for Session

Is there any Unique id for the oracle sessions wether i connect to the database using sql*plus,Isql*plus or any other tool. If i use "SELECT SYS_CONTEXT('USERENV', 'SID') FROM DUAL;" it return the same value if already opened session gets close.
So i want to know is there any unique identification for the sessions through out the life of the db.
Thanks in advance.
Balaji.M

Hi,
are you trying to identify a session uniquely? if yes then you need to use sid and serial#, once a session is terminated by logging of or killed the sid is releases and another session being formed can have the same sid.
Hope this helps.
Regards,
Vijay Sehgal

Firefox crashed before I could load my previous session - how may I restore it? I have backed up relevant session files, but have no idea how to use them.

I was using Firefox shortly before deciding to restore my previous session (100+ tabs!), but the browser froze and went blank with the "Not Responding" label on top. This happened to me before, and I decided to just quit the session. I knew that I would lose the session I wanted, but I backed up the important session files found in the Mozilla directory (or at least whatever has "session" and "restore" in its name) while the browser was stuck (before quitting).
What I'd like to understand is HOW TO USE these files to get my session back. I've tried replacing the session files with the back-up copies to no avail. Once long ago I managed to recover a session successfully, but with Firefox constantly changing, I may have lost touch with this.
I use Firefox 34 and Windows 8.1, but I'll need others' help in identifying the session backup/restore files I need to use from the ones I backed up.
I believe that the "recovery.bak" is vital, because it contains the tab/page names I was viewing.
I would greatly appreciate whoever would help me in this, especially if they can teach me the proper methods to follow if this ever happens again (which most likely will!)

You can look at this post in this MozillaZine forum thread about inspecting a sessionstore file and possibly extract URLs.
*http://forums.mozillazine.org/viewtopic.php?f=38&p=12098147&start=60#p12098147
You can open the Browser Console (Firefox/Tools > Web Developer).
Paste the JavaScript code in the command line and press the Enter key to run the code.
*Toggle the devtools.chrome.enabled pref on the about:config page to true to enable the command line
*https://developer.mozilla.org/Tools/Browser_Console#Browser_Console_command_line

Is there a way to force a new session so my "on new session" code will run?

I'm using apex.oracle.com and I find values of application (global) and page items persisting across logins.
I didn't expect that? I thought they would go away when I logged out of APEX. But I can change the values, logout, and log back in to the same values. And when I login and start an application, it's not running my "shared components > application processes" initialization code which is set "on new session".
I thought each login would be a distinct new session with it's distinct set of items. (see definition below)
So when I run an application, is there a way to force a new session so my "on new session" code will run?
>
What Is a Session?
A session is a logical construct that establishes persistence (or stateful behavior) across page views. Each session is assigned a unique identifier. The Application Express engine uses this identifier (or session ID) to store and retrieve an application's working set of data (or session state) before and after each page view.
Because sessions are entirely independent of one another, any number of sessions can exist in the database at the same time. Also, because sessions persist in the database until purged by an administrator, a user can return to an old session and continue running an application long after first launching it. A user can also run multiple instances of an application simultaneously in different browser sessions.
Sessions are logically and physically distinct from Oracle database sessions used to service page requests. A user runs an application in a single Oracle Application Express session from log in to log out with a typical duration measured in minutes or hours. Each page requested during that session results in the Application Express engine creating or reusing an Oracle database session to access database resources. Often these database sessions last just a fraction of a second.
>
Thanks -- Howard

I cleaned up the copy of the Select List code in APEX 4.1.xxx which was not operating correctly before. Now it matches what I have in APEX 4.2.yyyy. And, drum roll please, the select list seemingly works fine there (4.1) as well. But now, the initialization code--which was working fine(!)--FAILS in 4.1!
•
Okay. Maybe this will help. 1) I logged in. Ran the login page but did not login. Opened the "session" window and wrote down the session ID. Logged out and back in. 2) Ran the login page but did not login. Opened the "session" window and .... it has the same session ID? 3) So the session is persisting across logins!! How is that possible?
(More) When I log into 3 different applications, I get a different session ID for each but repeated logins always give the same session ID for any given session.

What is the "Main Attribute" for in Session Monitoring?

Anybody know what the "Main Attribute" column is for in session monitoring or how
I can use it?
Can't find it mentioned anywhere.

Does this actually work in WLS 6.1 SP1 ? I have session
monitoring enabled, have set the ConsoleMainAttribute to
"username", and have actually set an attribute with that name
to a string value in each session, but still get null returned
from getMainAttribute() on ServletSessionRuntimeMBean. Any
information, hints, advice, or vague prophecies on how to
successfully use this API would be appreciated.
--matt
Mihir Kulkarni <[email protected]> wrote:
The Main Attribute in the console is mapped to the ConsoleMainAttribute
in the
weblogic.xml file.
This attribute specified as follows in the weblogic.xml:
<session-param>
<param-name>ConsoleMainAttribute</param-name>
<param-value>mySession</param-value>
</session-param>
As per: http://e-docs.bea.com/wls/docs60/programming/weblogic_xml.html
If you enable Session Monitoring in the WebLogic Server Administration
Console, set
this parameter to the name of the session parameter you will use to identify
each
session that is monitored.
This parameter can only be a String in WLS 60. In 61, this parameter
can be an Object
and its toString method will be called to display its value.
cheers,
Mihir
Steven Job wrote:
Anybody know what the "Main Attribute" column is for in session monitoringor how
I can use it?
Can't find it mentioned anywhere.

Monitoring sessions invoked by a user SQL Developer

Hello Everyone ,
I am a DBA and lot of developers use SQL Developer for their tasks. Off late we have been facing few issues with SQL Developer.
Developers close the working session by "alt+f4" and strangely their sessions are active in the DB's. What is the cause for this ?
Rollback of DML statements takes hours for statements submitted by SQL Developer.
Does OCI driver help in any way ?
Is there any way that I can allow individual users to monitor their sessions in SQL Developer?
Suppose a user connects with a generic application username "xyz" , can I allow the user "xyz" to monitor sessions invoked by him and also provide him privileges to kill his/her own session.
We are facing lot of performance issues , so help in this regard would be highly appreciated.
Even pointing me towards appropriate documentation would do.
Thanks in anticipation.

1006957 wrote:
I am a DBA and lot of developers use SQL Developer for their tasks. Off late we have been facing few issues with SQL Developer.
Developers close the working session by "alt+f4" and strangely their sessions are active in the DB's. What is the cause for this ?
Rollback of DML statements takes hours for statements submitted by SQL Developer.
Does OCI driver help in any way ?
Is there any way that I can allow individual users to monitor their sessions in SQL Developer?
Suppose a user connects with a generic application username "xyz" , can I allow the user "xyz" to monitor sessions invoked by him and also provide him privileges to kill his/her own session.
We are facing lot of performance issues , so help in this regard would be highly appreciated.
Even pointing me towards appropriate documentation would do.
Once the DB begins work on a task it will continue that work until: 1) the work is complete, 2) an exception occurs or 3) it discovers that the client is no longer there.
If you begin a transaction (complex query, sorts, etc) that is lengthy it may be a while before the DB even tries to communicate with the client. Then all of that work must be rolled back and the rollback (e.g. for an update or delete) can take much longer than the query took to begin with. That is just the way Oracle works.
If a user connects as "xyz" then the only 'sessions invoked by him' are that ONE session. Any other user might also create a session by connecting as "xyz"; Oracle has no way of knowing if ALL sessions connecting as "xyz" belong to the same person or not.
The ALTER SYSTEM privilege must be granted to allow someone to 'kill his/her own session' but that privilege would allow them to kill any other session, including system sessions.
You could write a procedure to try to control the privilige, as in the following thread, but that also has risks:
https://forums.oracle.com/thread/256935
It is a DBA responsibility to control sessions, not the developers. You should NOT give this ability to the developers IMHO. If your developers are abusing your system it indicates that they need more training in how to prevent runaway queries. A common cause of the problem you describe is when a developer submits a query and then thinks they can just cancel it and start over and they DO NOT UNDERSTAND the first statement I made above: Oracle will keep working.
The proper solution to your problem is to begin logging your developer's requests for session termination so that you can properly monitor the problem and detect developers that need additional instruction or mentoring to keep the problem from happening. Although anyone, even experts, can accidentally let a query get out of control, your problem doesn't occur very frequently for experienced developers.
The DISCONNECT option only politely requests Oracle to terminate the session so it make take considerable time to clean everything up.
If you really need to terminate the session you need to use DISCONNECT IMMEDIATE. See the disconnect session clause of alter system in the sql language doc
http://docs.oracle.com/cd/B28359_01/server.111/b28286/statements_2013.htm#sthref4725
{quote}
DISCONNECT SESSION Clause
Use the DISCONNECT SESSION clause to disconnect the current session by destroying the dedicated server process (or virtual circuit if the connection was made by way of a Shared Sever). To use this clause, your instance must have the database open. You must identify the session with both of the following values from the V$SESSION view:
For integer1, specify the value of the SID column.
For integer2, specify the value of the SERIAL# column.
If system parameters are appropriately configured, then application failover will take effect.
The POST_TRANSACTION setting allows ongoing transactions to complete before the session is disconnected. If the session has no ongoing transactions, then this clause has the same effect described for as KILL SESSION.
The IMMEDIATE setting disconnects the session and recovers the entire session state immediately, without waiting for ongoing transactions to complete. If you also specify POST_TRANSACTION and the session has ongoing transactions, then the IMMEDIATE keyword is ignored.
If you do not specify POST_TRANSACTION, or you specify POST_TRANSACTION but the session has no ongoing transactions, then this clause has the same effect as described for KILL SESSION IMMEDIATE.
{quote}

Unique identifier of Message

Which approach is better ?
Message-ID header or (IMAP, POP3 UID message) ?
How are you handle this problem in your applications ?
thanks

Use message UIDs (or persistent UIDs) for a client to resynchronize its state from a previous session with the server (e.g., disconnected or offline access). In this case, you might also need to couple your logic with UIDVALIDITY. Any change of unique identifiers between sessions can be detectable using the UIDVALIDITY.
On the other hand, Message ID is not mandatory in the message. For example, some of the messages that we download from yahoomail (or any other mail agent) might not have message Ids.
Therefore, always use UIDs if your job is to resync the client with the email servers.
Thanks
Subbaraja
http://www.subbarajas.blogspot.com/

Session problem on clustered sun fire with SP6.1

Hi All,
I am having a problem with a webapplication on a clustered system.
In the following I describe the current system setup.
I will then describe the setup of the web application.
Following this, I explain the trouble I'm having with sharing sessions in this environment.
Finally, I pose the key question.
SYSTEM SETUP:
Our group has a clustered server setup. I believe the two machines are Sun Fire systems running Solaris 9. Let me know if you need more information concerning the HW.
To manage the cluster, we use Sun Cluster software. Let me know if you need to know the version number. I do not have it handy. We just recently setup the system (in the past 6 months).
Also, we have the newest Sun Web Server installed 6.1. We used the default installation. The only thing we changed was the dynamicreloadinterval variable from "-1" to "60".
WEB APPLICATION:
We have a fairly simple MVC web application setup, which works well on a single-server system. Essentially, the web application (1) asks for a certain input via a webform, (2) takes this input, and uses it to get information from a database, (3) puts this information into a httpsession attribute, (4) redirects the response to a JSP. The JSP gets the httpsession attribute (populated in step 3) and prints it out.
So, HTML with form posts to Servlet, Servlet gets data from database and populates a session attribute, JSP gets that session attribute and prints it out.
Between each transition from HTML, Servlet and JSP, the currently processing server may switch. I.e. the HTML may be served, for instance, by ClusterServer1, the Servlet may be handled, for instance, by ClusterServer2, and the JSP may be served at random by either.
THE TROUBLE I'M HAVING
Sometimes, my JSP is able to find the session attribute and print out whatever I put into the session during the Servlet step. However, sometimes, the JSP will print out "null" (the session attribute isn't available to the JSP).
For the HTML and the JSP, I have the page print out what server it is being served from. Thus, I can tell that the HTML is served from, for instance, ClusterServer1 while JSP is served from, for instance, ClusterServer2. Sometimes, the same server serves both.
KEY QUESTIONS:
Why would this be happening?
How can I have a session stick to the user and be shared across both servers?
What other information would you need to provide an answer concerning this issue?
I appreciate your efforts very much!
Matthias Edrich
dailysun

Hi All,
Hi Elving,
I read through the documentation and have the following questions:
(1) It seems that I can share sessions amongst both servers if I
configure the web server to store sessions in a persistant manner such as in a file or in a database. Is this correct?
(2) To enable this persistent storage of a session, I would need to change the Session Manager used. Is this correct?
(3) If yes, I have the choice between the following managers. Please correct me if I have misunderstood the options.
- PersistentManager: Instead of securing session information
in memory, this manager saves session information within
a file on the server in a directory, which I specify within
sun-web.xml
- IWSSessionManager: With this manager, I can store sessions
in a defined database or file on the server.
- MMapSessionManager: This manager also stores sessions in
a file on the server
(4) What is the difference between PersistentManager and
MMapSessionManager if my web server is running in
single-process mode?
(5) If MMapSessionManager is a file-based manager, where do I
specify to what directory the related file is stored to as I
do in PersistentManager?
(6) What are the advantages and disadvantages of
Persistent/IWS/MMap managers?
(7) In looking at SessionManagers, am I even barking up
the right tree? It seems like these would help me share
sessions across clustered servers.
(8) Finally, I guess my plan of action would be the following:
-> Identify what session manager to use
-> Include a sun-web.xml file in /WEB-INF containing
the manager-specific info
-> Reload my web application
-> done...
Is this correct?
Elving, I appreciate your help. Thanks!
dailysun

Identifying the blocking Lock

In one of our production DB we are experiencing huge bottlenecks due to locks. I am using OEM lock monitor to detect and identify the problematic lock. I am trying this out randomly as OEM list all the blocking locks. . Most times I am not able to analyse the problematic locks because of support calls from production. I just have time to kill the sessions and get the platform ready. Is there a script that I can use to identify the session that is blocking other sessions ? How do we do analysis during situations like this? At least I am interested in finding the root cause of the problem so we request the developers to fix it.
- BMP

&1 --><sid of any session>.if the sid provided is waiting for other sessions, it will show you the blocking session id.
Try this one (Not tested):
SELECT bs.username "Blocking User", bs.username "DB User",
ws.username "Waiting User", bs.SID "SID", ws.SID "WSID",
bs.sql_address "address", bs.sql_hash_value "Sql hash",
bs.program "Blocking App", ws.program "Waiting App",
bs.machine "Blocking Machine", ws.machine "Waiting Machine",
bs.osuser "Blocking OS User", ws.osuser "Waiting OS User",
bs.serial# "Serial#",
DECODE (wk.TYPE,
'MR', 'Media Recovery',
'RT', 'Redo Thread',
'UN', 'USER Name',
'TX', 'Transaction',
'TM', 'DML',
'UL', 'PL/SQL USER LOCK',
'DX', 'Distributed Xaction',
'CF', 'Control FILE',
'IS', 'Instance State',
'FS', 'FILE SET',
'IR', 'Instance Recovery',
'ST', 'Disk SPACE Transaction',
'TS', 'Temp Segment',
'IV', 'Library Cache Invalidation',
'LS', 'LOG START OR Switch',
'RW', 'ROW Wait',
'SQ', 'Sequence Number',
'TE', 'Extend TABLE',
'TT', 'Temp TABLE',
wk.TYPE
) lock_type,
DECODE (hk.lmode,
0, 'None',
1, 'NULL',
2, 'ROW-S (SS)',
3, 'ROW-X (SX)',
4, 'SHARE',
5, 'S/ROW-X (SSX)',
6, 'EXCLUSIVE',
TO_CHAR (hk.lmode)
) mode_held,
DECODE (wk.request,
0, 'None',
1, 'NULL',
2, 'ROW-S (SS)',
3, 'ROW-X (SX)',
4, 'SHARE',
5, 'S/ROW-X (SSX)',
6, 'EXCLUSIVE',
TO_CHAR (wk.request)
) mode_requested,
TO_CHAR (hk.id1) lock_id1, TO_CHAR (hk.id2) lock_id2
FROM Gv$lock hk, v$session bs, v$lock wk, v$session ws
WHERE hk.BLOCK = 1
AND hk.lmode != 0
AND hk.lmode != 1
AND wk.request != 0
AND wk.TYPE(+) = hk.TYPE
AND wk.id1(+) = hk.id1
AND wk.id2(+) = hk.id2
AND hk.SID = bs.SID(+)
AND wk.SID = ws.SID(+)
AND (bs.username IS NOT NULL)
AND (bs.username <> 'SYSTEM')

Identifying MWA sessions

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