Find blocking sessions based on forms

Hi,
We use R12 applications and database 10g and wanted to kill blocking sessions that were created from forms in oracle applications.
How to find out them?

You can use the resource manager to kill the blocking sessions.
Also you can query to find the blocking sessions:
select SID, SERIAL#, machine, USERNAME, status, BLOCKING_SESSION
from v$session where BLOCKING_SESSION IS NOT NULL
UNION ALL
select A.SID, A.SERIAL#, A.machine, A.USERNAME, A.status, A.BLOCKING_SESSION
from v$session A, V$SESSION b WHERE A.SID=B.BLOCKING_SESSION
order by machine, status;

Similar Messages

Forms related blocking sessions

Hi,
We use R12 applications and database 10g and wanted to kill blocking sessions that were created from forms in oracle applications.
How to find out them?
Regards

query v$lock to find blocking sessions
check v$session action field (for 'FRM:%') to see if they're forms
the later releases of 11.5 set the v$session action field, so I assume R12 still does that - but don't have access to check.

Blocking session in RAC

hi,
How to find out the blocking sessions in RAC

Use Google .
Some Links :
http://erikwramner.wordpress.com/2010/05/28/find-blocking-and-blocked-sessions/
http://oraclespin.wordpress.com/2009/05/18/how-to-find-blocking-session/
also mention in this thread before
Re: Finding Locking SID in RAC environments

How to find the application type fora Script based on Form name?

Hi Guys,
            can anybody tell me how to find the Application Type and output type based on Form name and print program name?
I am having form name as: ZINVENT (INVENT is the actual) and program name as RM07IDRU.How can i find the Appliction ntype and OutType for entering into the NACE tr code.
                i tried thru TNAPR table but i was not able to find the Entry in the TNAPR with form Name and printprogram name
               Th Script is about Phsical inventory Documents.
Thanks,
Gopi.

You can use this...
REPORT Z_DUMMY_ATG NO STANDARD PAGE HEADING.
*======================================================================
* Tablas
*======================================================================
TABLES: TTXFP.
*======================================================================
* Tablas Internas
*======================================================================
DATA: T_TTXFP TYPE STANDARD TABLE OF TTXFP WITH HEADER LINE.
*======================================================================
* Selection-Screen
*======================================================================
SELECTION-SCREEN BEGIN OF BLOCK SCRIPT WITH FRAME.
SELECT-OPTIONS:
              PRINTNAM FOR TTXFP-PRINT_NAME,
              TDFORM   FOR TTXFP-TDFORM.
SELECTION-SCREEN END OF BLOCK SCRIPT.
*======================================================================
* Start-of-selection
*======================================================================
START-OF-SELECTION.
PERFORM SELECT_DATA.
PERFORM PRINT_DATA.
*&      Form SELECT_DATA
*       Seleccionamos los datos del reporte.
FORM SELECT_DATA.
SELECT TDFORM PRINT_NAME LAST_PROG
INTO TABLE T_TTXFP
FROM TTXFP
WHERE PRINT_NAME IN PRINTNAM
    AND TDFORM IN TDFORM
ORDER BY TDFORM.
ENDFORM.                    "SELECT_DATA
*&      Form PRINT_DATA
*       Imprimimos el resultado del reporte.
FORM PRINT_DATA.
FORMAT COLOR 3.
WRITE: 'Programa', 18 'Formulario', 50 'Flag de Ultimo programa'.
FORMAT COLOR OFF.
SKIP 1.
IF NOT T_TTXFP[] IS INITIAL.
SORT T_TTXFP BY PRINT_NAME.
    LOOP AT T_TTXFP.
      IF T_TTXFP-LAST_PROG EQ 'X'.
      FORMAT COLOR 4.
      WRITE:/ T_TTXFP-PRINT_NAME, 18 T_TTXFP-TDFORM, 60 T_TTXFP-LAST_PROG.
      FORMAT COLOR OFF.
      ELSE.
      WRITE:/ T_TTXFP-PRINT_NAME, 18 T_TTXFP-TDFORM, 60 T_TTXFP-LAST_PROG.
      ENDIF.
    ENDLOOP.
ENDIF.
ENDFORM.                    "PRINT_DATA
Greetings,
Blag.

Need to find the SID of a forms session.

Hi,
I need to find the SID of a form session. How to find the same.
Eg:- If a user connected to our EBS system, Then automatically one sid will be generated to that user. I need to find the SID for this user. If given detailed steps it would be great help.
Regards
SR.

Hello,
Although I am a bit unclear about the question. But please see if the following helps;
I can query the v$session to know about the SID. Here is a simple example;
select sid,
substr(username,1,15) "DB UserName",
substr(osuser,1,15) "OS UserName",
substr(command,1,3) CMD,
substr(machine,1,10) Machine,
terminal, process, status,
substr(program,1,50) "OS Program Name"
from v$session
where type = 'USER'
order by usernameHere is a sample output;
            SID DB UserName     OS UserName     CMD MACHINE    TERMINAL         PROCESS      STATUS   OS Program Name
              7                 SYSTEM          0   ORAAPPPROD ORAAPPPROD       976          ACTIVE   ORACLE.EXE
              8                 SYSTEM          0   ORAAPPPROD ORAAPPPROD       3548         ACTIVE   ORACLE.EXE
Additionally you can also review Oracle Metalink Script: How To Identify The apps User Using The O/S PID For Forms Users In 11i Doc ID: Note:185762.1.
https://metalink.oracle.com/metalink/plsql/f?p=130:14:38346007578631471::::p14_database_id,p14_docid,p14_show_header,p14_show_help,p14_black_frame,p14_font:NOT,185762.1,1,1,1,helvetica
Hope it helps. Maybe others might add in this.
Adith

Find and kill "long time" blocking sessions

Dear Experts,
I'm looking for a way to kill sessions that are blocking for more than 5 minutes.
I can find the blocking sessions thanks to v$lock and its block field. But how can I know when this blocking session started ?
Best Regards,
Guillaume

Dear Experts,
I'm looking for a way to kill sessions that are
blocking for more than 5 minutes.
I can find the blocking sessions thanks to v$lock and
its block field. But how can I know when this
blocking session started ?I am not sure that you are right consistent in your question
You should not search when the blocking session started but when the blocking transaction started.
Column logon_time in v$session gives the start time of the session.
However what you are searching should be column start_time in v$transaction.
SELECT t.start_time
FROM v$transaction t, v$session s
WHERE t.addr = s.taddr
AND other conditions here

FRM: 41056 Cannot find block Invalid ID (Solved)

Hi Gurus,
I have a package Variable(x) declared in the package spec(Y) of my form.
In when_button-pressed trigger I wrote code like this.
Y.X:=NULL;
I am getting FRM: 41056 Cannot find block Invalid ID.
Can anyone please help me on this regard?
Message was edited by:
Forms

Gurus,
thanks for your advice.
Actually in the package specification (in Forms) there was some other varible whose initial value was based on a block which did not exist in my forms.
So that caused the problem.
Sorry for the silly question.
Thanks,

Script to kill blocking sessions

We use Oracle 10. We have a test database used solely for training and I need the give the trainer the ability to kill all the blocking sessions when a block(s) is holding up
the entire class.
My idea was to create a simple form on our Oracle menu- containing just a single button that when pressed would trigger the script. One press of the button
to kill each and every blocking session. I have no clue as to how to write a script of this nature. Would appreciate any advice.
Regards,
Sandy

This is easier said than done. Numerous reasons. Here's a couple:
You cannot rely on using v$session to identifying blocked sessions.
Some user sessions may be blocked by a system process (e.g. log writer), which means you cannot unblock the user sessions by killing the blocking session. (especially when running into an Oracle bug where a user session will spin on "+enq: RO - fast object reuse+" when dropping an object and then being shown as blocked by a system session/process).
Killing a session in Oracle is a misnomer as the "+alter system kill session+" is a request and not a command. The relevant user session needs to terminate itself (kind of like assisted suicide). No other process actually kills the physical process (or thread) executing that user session. Thus if that user session is waiting on some external response or event, it will be unable (now and forever) to respond to that kill request. In such a case, the only alternative is killing the physical process instead. (or shutting down the database)
A blocking session could be a job process that contains problematic code that leads to the blocking/serialisation. Killing that session will simply fail the job after which the job queue manager will restart the session again.. 16 times in succession. Only then will it mark that job entry as broken and cease trying to restart it.
So killing blocking sessions? It is not easy to identify blocking processes, they cannot always be killed, and even when you do kill them, they may simply reincarnate as a new session.
So what is the solution then?
Blocking sessions are not "+A Bad Thing+". There are very good and technically sound reasons for serialisation. When it does become a problem, there's something more to it. And blindly killing blocking sessions in such a case is treating the symptom of a problem and ignoring the problem all together. Find the reason for this serialisation and address that.

Blocking sessions during MGP compose

We keep getting the MGP compose process blocked by inactive sessions
We raised a SR with Oracle and they suggested adding the instance parameter DO_APPLY_BFR_COMPOSE=YES to webtogo.ora, but this does not seem to have cured the problem.
From tracing, it seems that the problem is an inactive apply session that resulted in an error, being there for the user it is trying to compose. The actual block is on the table MOBILEADMIN.C$ALL_CLIENT_ITEMS.
If an apply fails due to an error (eg: constraint violarion, trigger failure etc), it executes the statement
UPDATE MOBILEADMIN.C$ALL_CLIENT_ITEMS SET CRR='Y' WHERE CLIENTID=? AND PUBLICATION_ITEM IN ( SELECT PUBLICATION FROM MOBILEADMIN.C$ALL_TEMPLATE_ITEMS ati WHERE ati.TEMPLATE=?):
as part of the copy to the error queue. It also looks to execute the same statement at the beginning of the compose for the user, hence the block.
The other odd thing is that looking at the blocks this morning, the MGP apply/compose kicked off at 7.09 am. The user synchronised at just after 8 am, by which time the MGP cycle was well into the compose phase, and there is no record of apply activity for the user within the cycle (the actual apply is in the following cycle), the the content of the blocking session was definitely apply code.
MGP used to do all of the applys first, and then all of the composes, with a test to skip the compose if there was data in the user in queue. The upgrade to 10.2 (or one of the many patches since) looks to have changed the default behaviour to attempt an apply before each user compose, but the parameter above was supposed to set the server back to its old behaviour (ie: keep apply and compose seperate). NOTE i have not seen any of the old 'compose deferred because of unprocessed data in the in queue' messages in the compose recently either.
Upshot is that it looks like it is still mixing apply and compose together, and where the apply hits an error, the apply thread is not closing correctly, or releasing its locks.
Does anyone have any information about the parameters
DO_APPLY_BFR_COMPOSE or
SKIP_INQ_CHK_BFR_COMPOSE (this appeared with a value of NO when we added the other parameter.
Information from oracle is that the two are mutualy exclusive (?) but they are not documented anywhere that i can find (the one reference on metalink leads to a non existant note), and oracle seem reluctant to supply any
so PLEASE
a) any information about the parameters
b) any dependancies (ie: parameters not working because we are missing a patch)
c) location of documentation
d) any other ideas

which version are you on?
we are on 10.2.0.2, so unsure if this works in other versions
The standard mobile manager parameters screen does not by default show these settings, but we were asked to add them into the webtogo.ora file in the [CONSOLIDATOR] section eg:
[CONSOLIDATOR]
# Installer will change these values
SERVER_VERSION=8.1.7
SKIP_INQ_CHK_BFR_COMPOSE=YES
DO_APPLY_BFR_COMPOSE=NO
RESUME_FILE_SIZE=512
# 8.1.7
# Installer won't change these values
MAX_THREADS=3
JDBC_DRIVER=oracle.jdbc.driver.OracleDriver
once this was done we stopped and restarted the mobile server and then the new parameters will appear in the normal data synchronisation>administration>instance parameters screen
our current setting on the live system are
SKIP_INQ_CHK_BFR_COMPOSE YES
DO_APPLY_BFR_COMPOSE NO
and this does the compose whether or not there is pending data in the in queues for the client. Just my opinion, but there seems little point in doing the check as even if you force two tries of the apply process (one in the main apply phhase before the compose phase, and one just before composing for a particular user), the data in the second apply will not be picked up on fast refresh publication items as the 'snapshot' of the changes has already been done in the process logs phase

Dynamic element binding between XML based PDF form and WDA context

Hi Experts,
I am working on a XML based interactive form.There is a table node in the XML interface which generated by WDA context, and binding on a subform in the PDF form.
I tried to add instances to the subform using javascript. Unfortunately, I can not get the internal table in WDA.
If I initialize the table to 10 lines in WDA , and then add 5 line to it in PDF, when I submit the PDF, I can only get 10 lines in the WDA framework. It seems that the element which is create dynamically can not be past to the interface.
Could you tell me why? And is there any other better solution? I just want build a table in PDF form in runtime and pass it to WDA context.
Thanks a lot!
Best Regards,
Guo Guo Qing

Hi Thomas,
Thank you for your reply.
I think the performance will be a problem if I create the elment in WDA using submit event. I need to create hundreds of record dynamically. I must find some way to reduce the communication between the WDA and PDF form. Maybe I can set a container with a number of elements before the PDF output. Do you have some better ideas?
Best Regards,
Guo Guo Qing

Blocking session query

What's the query to find this kind of info, blocking session? eg
535 session blocking one other session 1962, they are both coming from SP:

This query will tell you who's blocking who...
select (select username
          from v$session
         where sid = a.sid) blocker
     , a.sid
     , ' is blocking '
     , (select username
          from v$session
         where sid = b.sid) blockee
     , b.sid
from v$lock a
     , v$lock b
where a.block = 1
   and b.request 0
   and a.id1 = b.id1
   and a.id2 = b.id2query by Tom Kyte

How to kill the blocking session

hi expert,
when i m going to run the below query
Update rcv_transactions_interface rti set rti.processing_mode_code ='BATCH' where rti.interface_transaction_id = 3671265
it gives the error:
ORA-00054 resource busy and acquire with NOWAIT specified.
i find out the blocking session by using the blow query;
SELECT a.SESSION_ID, a.SESSION_SERIAL#, min(A.SAMPLE_TIME) start_time,max(A.SAMPLE_TIME) end_time,a.inst_id, a.blocking_session,a.user_id,s.sql_text,A.EVENT,O.OBJECT_NAME,max(A.SAMPLE_TIME) - min(A.SAMPLE_TIME)
FROM GV$ACTIVE_SESSION_HISTORY a ,gv$sql s, dba_objects o
where a.sql_id=s.sql_id
and A.CURRENT_OBJ# = O.OBJECT_ID
and blocking_session is not null
and a.user_id != 0 -- exclude SYS user
and a.sample_time > sysdate - 7
and a.event = 'enq: TX - row lock contention'
group by a.SESSION_ID, a.SESSION_SERIAL#, a.inst_id,a.blocking_session,a.user_id,s.sql_text,A.EVENT,O.OBJECT_NAME
it gives the output
SESSION_ID
SESSION_SERIAL#
START_TIME
END_TIME
INST_ID
BLOCKING_SESSION
USER_ID
SQL_TEXT
EVENT
OBJECT_NAME
MAX(A.SAMPLE_TIME)-MIN(A.SAMPLE_TIME)
369
45,849
9/4/2013 8:29:33.119 AM
9/4/2013 11:40:27.508 AM
1
554
173
SELECT POL.UNIT_PRICE   FROM PO_LINES POL WHERE POL.PO_LINE_ID = :b1
enq: TX - row lock contention
PO_LINES_ALL
+00 03:10:54.389000
554
18,872
9/4/2013 8:29:33.119 AM
9/4/2013 11:40:27.508 AM
1
365
173
SELECT POL.UNIT_PRICE,POL.QUANTITY,POL.UNIT_MEAS_LOOKUP_CODE,POL.AMOUNT   FROM PO_LINES POL WHERE POL.PO_LINE_ID = :b1
enq: TX - row lock contention
JA_IN_PO_LINE_LOCATION_TAXES
+00 03:10:54.389000
572
168
9/4/2013 8:29:33.119 AM
9/4/2013 11:40:27.508 AM
1
554
173
select line_location_id into :b0 from po_line_locations_all where line_location_id=:b1 for update of line_location_id
enq: TX - row lock contention
PO_LINE_LOCATIONS_ALL
+00 03:10:54.389000
581
4,973
9/4/2013 10:49:38.157 AM
9/4/2013 10:50:39.259 AM
1
572
173
Update rcv_transactions_interface rti set rti.processing_mode_code ='BATCH' where rti.interface_transaction_id = 3671265
enq: TX - row lock contention
RCV_TRANSACTIONS_INTERFACE
+00 00:01:01.102000
my problem is in the above output among 4 which i have to delete so sove my issue.
its very urgent for me.
plz plz suggest me and how can i kill the session.
thanks & regards
pritesh ranjan

priteshranjan wrote:
hi expert,
when i m going to run the below query
Update rcv_transactions_interface rti set rti.processing_mode_code ='BATCH' where rti.interface_transaction_id = 3671265
it gives the error:
ORA-00054 resource busy and acquire with NOWAIT specified.
i find out the blocking session by using the blow query;
SELECT a.SESSION_ID, a.SESSION_SERIAL#, min(A.SAMPLE_TIME) start_time,max(A.SAMPLE_TIME) end_time,a.inst_id, a.blocking_session,a.user_id,s.sql_text,A.EVENT,O.OBJECT_NAME,max(A.SAMPLE_TIME) - min(A.SAMPLE_TIME)
FROM GV$ACTIVE_SESSION_HISTORY a ,gv$sql s, dba_objects o
where a.sql_id=s.sql_id
and A.CURRENT_OBJ# = O.OBJECT_ID
and blocking_session is not null
and a.user_id != 0 -- exclude SYS user
and a.sample_time > sysdate - 7
and a.event = 'enq: TX - row lock contention'
group by a.SESSION_ID, a.SESSION_SERIAL#, a.inst_id,a.blocking_session,a.user_id,s.sql_text,A.EVENT,O.OBJECT_NAME
it gives the output
SESSION_ID
SESSION_SERIAL#
START_TIME
END_TIME
INST_ID
BLOCKING_SESSION
USER_ID
SQL_TEXT
EVENT
OBJECT_NAME
MAX(A.SAMPLE_TIME)-MIN(A.SAMPLE_TIME)
369
45,849
9/4/2013 8:29:33.119 AM
9/4/2013 11:40:27.508 AM
1
554
173
SELECT POL.UNIT_PRICE   FROM PO_LINES POL WHERE POL.PO_LINE_ID = :b1
enq: TX - row lock contention
PO_LINES_ALL
+00 03:10:54.389000
554
18,872
9/4/2013 8:29:33.119 AM
9/4/2013 11:40:27.508 AM
1
365
173
SELECT POL.UNIT_PRICE,POL.QUANTITY,POL.UNIT_MEAS_LOOKUP_CODE,POL.AMOUNT   FROM PO_LINES POL WHERE POL.PO_LINE_ID = :b1
enq: TX - row lock contention
JA_IN_PO_LINE_LOCATION_TAXES
+00 03:10:54.389000
572
168
9/4/2013 8:29:33.119 AM
9/4/2013 11:40:27.508 AM
1
554
173
select line_location_id into :b0 from po_line_locations_all where line_location_id=:b1 for update of line_location_id
enq: TX - row lock contention
PO_LINE_LOCATIONS_ALL
+00 03:10:54.389000
581
4,973
9/4/2013 10:49:38.157 AM
9/4/2013 10:50:39.259 AM
1
572
173
Update rcv_transactions_interface rti set rti.processing_mode_code ='BATCH' where rti.interface_transaction_id = 3671265
enq: TX - row lock contention
RCV_TRANSACTIONS_INTERFACE
+00 00:01:01.102000
my problem is in the above output among 4 which i have to delete so sove my issue.
its very urgent for me.
plz plz suggest me and how can i kill the session.
thanks & regards
pritesh ranjan
According to the above, your session_id is 581 which is blocked by session_id 572 so you need to kill the 3rd session in the list.
Thanks,
Hussein

Using JSP based PCR forms in ERP2005 rather than Adobe interactive forms

We are currently upgrading from EP5.0 business package 50 to EP7.0 with ERP2005 (ECC 6.0) and are trying to configure our existing custom personal change request forms with our scenarios.
Originally our custom PCR scenarios where JSP iView and we are hoping to use these again as part of ERP2005. The customisation seems to support this transaction QISESCENARIO for each scenario you have the option Entry Type in Web and you can set it to Entry Using JSP iView. We can configure the internet link and the portal component also for our JSP view.
When we try to run this however we get the exception No Adobe Form Is Assigned to the Scenario. After a quick debug it seems that you always need the Adobe form to be configured.
None of the documentation for ERP2005 suggests that you can use anything other than Adobe forms, which contradicts the configuration in QISESCENARIO.
The ISR cookbook (written July 2004) details the creation and configuration of JSP request forms but not what versions they are compatible with.
Developing you own PCRs for ERP2004 (Cant find an ERP 2005 version) does not mention JSP iViews at all.
The release notes for ERP2005 dont give this a specific mention.
So, my question is are the use of JSP based request forms permitted with ERP2005 ?

Hi Phil,
Interesting - I have a similar issue. We want to use the Request for Transfer scenario in ERP 2005, but it has not been developed in Adobe forms by SAP yet (it isn't available in 2004 either)! So, we have decided to use the old JSP PCRs instead.
Your issue is probably because you're using the same 2005 iviews to create your PCRs. The 2005 PCR iviews are written in WebDynpro, and appear to assume that each one will be an Adobe form! If you assign the old PCR iviews to your manager (give them the old MSS role under Migrated Content->EP5.0... in the pcd if you have it installed), you will be able to create a PCR with the JSP forms (regardless of the "Entry in Web" setting in QISRSCENARIO).
The next issue is the approval. In 2005, transaction SWFVISU has task TS50000075 configured as Java Webdynpro. You'll need to change that to iView, and specify ID = com.sap.pct.hcm.isrdispatcher.default. I'm following the UWL item type guide for this at:
http://help.sap.com/saphelp_nw04s/helpdata/en/b1/cc1357eead454bb144face4a66be7d/content.htm
Having said this, my approval is not working! The item type has clearly changed, because the workitem name is no longer a hyperlink (rather annoying), but when I hit the "Launch Task Page" button (default name I think) I get the error:
"Unable to perform action because the system returned an invalid URL"
I can't see this "invalid url" anywhere in the logs, so I can't see where it is getting it from, or what path, etc I'm meant to put! In your old system, what did you have as the "Server for ISR call" under "Additional Data for Scenario" in QISRSCENARIO? Also, what did you have in the "URL" box that appears under the Additional Data for Scenario button when you change the Entry Type to JSP?
Many thanks,
Russell.

Where will we find dynamic option in web forms

Hi, Gurus
1.where will we find dynamic option in web forms?
regards
Taruni

If you're talking about the dynamic POV in web forms introduced in 11.1.2.2.302, documentation only exists in the patch readme at this time. I've pasted it below.
Support for Dynamic POV Member Lists in Web Data Forms
This release provides support for dynamic POV member lists in Web Data Forms. You can create dynamic POV member lists to display dimension members that meet specific criteria. Dynamic POV member lists are created dynamically at runtime, based on the current POV member of one or more dimensions.
Using dynamic POV member lists in data forms enables you to quickly populate rows and columns with valid members, depending on what has been selected in the POV. For example, you can create a dynamic POV member list that defines valid entities per year. When you select a year in the data form, the system displays only the valid entities that were defined in the member list for that year.
Example:
YearPOV = HS.MemberListYear
If HS.MemberListID = 12 Then
If YearPOV = 2011Then
HS.AddEntityToList "Group", "CORP_OPS"
ElseIf YearPOV = 2012 Then
HS.AddEntityToList "Group", "CORP_OPS"
HS.AddEntityToList "Group", "CHINA"
HS.AddEntityToList "Group", "GERMANY"
HS.AddEntityToList "Group", "UK"
End if
The basis on which the dynamic POV member lists can be created are Scenario, Year, Period, Entity, but member lists can now be created for any dimension. For example, you can create Year lists based on Entity, Custom lists based on Scenario and Entity, Account lists based on Period, and so on. The dimension on which to base the list (Scenario, Year, Period, Entity) must be in the form POV to be effective. If the dimension is not in the form POV, then the HS.MemberList<object> rule returns an empty string.
Administrators define dynamic POV member lists in application member list files. Dynamic POV member lists are identified with the (@POV) suffix, for example, <ValidForEntity>(@POV). Each member list file must include an EnumMemberLists subroutine to specify which dimensions have dynamic POV member lists, the number of lists for each dimension, and the name of each member list. The member list file must also include an EnumMembersInList subroutine to define the members in the list.
Administrators can then add dynamic POV member lists to a form when they define the data form, in the same way that they add other member lists.
In an application that has dynamic POV member lists defined, users can then use the Form Designer to select member lists for the rows and columns of the form. From the Member Selection dialog box, the valid dynamic POV member lists for the current dimension are displayed with an @POV suffix at the bottom of the dialog box, and users can select them in the same way as other members.

Oracle Blocking Session History

Hi Folks,
This morning the database server machine CPU hits 100% - i found a blocking session but didnt killed it as it was of the flashback session.
The only option i thought was to restart the database.
Now, i want to investigate the problem - any idea, how to find the cause of tht problem???
regards,
OraGuy

1) Session A holding a lock that Session B is waiting on, causing session B to be temporarily blocked, assuming that's what you saw when you're talking about a "blocking session", is not particularly unusual in Oracle (or any relational database for that matter). That shouldn't cause a spike in CPU and it shouldn't require a database restart to clear the problem (at worst, you might kill the session that holds the lock, but it would normally resolve itself automatically), though. And that definitely doesn't explain a hung database if that's truly what you had.
2) Since you mentioned AWR, can we assume that you are using the enterprise edition with the performance & tuning packs? If so, assuming you rebooted before the AWR snapshot captured information about the state of the system, you could potentially go through the ASH data (active session history) for the various sessions that were blocking and waiting to see what they were waiting on.
Justin

Find blocking sessions based on forms

Similar Messages

Maybe you are looking for