Question on v$ session.status = KILLED
DB version: 10.2.0,4Operating system: Solaris SPARC 5.10
Usually, the recording of the session killed will be absent from the result of the query. But sometimes the registration for the session killed will be present when you query v$ session with continuous KILLED = STATUS. When this happens?
I agree with Satish. As seen in the place where I work, this often happens with very large transactions. Moreover, the transaction is running with the session being ACTIVE before killed, more it will appear as people KILLED due to the CANCELLATION involved in the restoration of the large transaction. The remaining sessions returns with a status KILLED can be such a wretch where several tables can always be locked by the cancellation process.
Tags: Database
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Question on V$ SESSION. STATUS column
DB version: 11.2.0.4 on Oracle Linux 6.4
V$ SESSION. STATUS: My question is about the IDLE State.
Under what circumstances does V$ SESSION. STATUS become INACTIVE for a session?
For a particular run SQL, if the session has to wait a/o lock or Table being released, will be V$ SESSION. Change of STATUS to "INACTIVE"?
If the session is waiting for an i/o for a lock or a lock, its status is ACTIVE.
However, after the current call ends its status is INACTIVE.
If the session sends multiple lines to a customer and the number of lines, such that it exceeds the size of the array, the session must make several calls to send the rows to the client. Between calls, even if she is waiting for the client to recognize the last set of rows sent, its status may be INACTIVE.
Similarly, while the session waits for the next SQL statement of the client, its status would be INACTIVE.
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Why DB read file is still active after that the session was killed?
Hello
I have a query which is only select read only (no selection for update) on a big enough table (lines 500millions). The result must return a few million rows (1-10 million), because it is not properly written.
I killed all the sessions opened by the user who started the application, but after 3 hours, it is still ongoing.
I don't understand. It's a read. There is no data restoration that must be set aside, there is no generation of redo (low) because of this.
There are a few kinds made in this query.
So, why after that I'm killing a query that is read-only, the process runs for a very long time?
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Any ideas?
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Daniel>
I killed all the sessions opened by the user who started the application, but after 3 hours, it is still ongoing.
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Have Yes - but you used the IMMEDIATE clause to kill HER?
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IMMEDIATE specify IMMEDIATE load the Oracle database to ongoing transactions, releases all session locks, recover session state full and immediately returns control to you.
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If you really want the process completed rather than simply "marked" termination then use DISCONNECT SESSION with the IMMEDIATE clauseSee the "Clause of DISCONNECT SESSION" in the doc of the SQL language
http://docs.Oracle.com/CD/B28359_01/server.111/b28286/statements_2013.htm
>
Use the DISCONNECT SESSION clause to disconnect the current session to destroy the dedicated server process (or virtual circuit if the connection was made through a shared server).
. . .
The IMMEDIATE environment disconnects the session and retrieves the status of entire session immediately, without waiting for open transactions to complete.
>
View the results of the use of DISCONNECTION -
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kill session vs kill session immediate/post_transactional
A DBA, I sometimes kill sessions in SQL * more by entering the command ' ALTER SYSTEM KILL SESSION ' xxx, xxxx '; The session ends quickly, sometimes it takes sometimes minutes for the killed session to go.
When to use Enterprise Manager Grid Control to kill a session that I have to choose between a 'kill immediately' or 'transactional Message. When I kill a session by entering a command from SQL * more I do not use one of these options.
I'm trying to understand the consequences of the use of the two options available via the grid control. Clause of some forum posts suggest you use IMMEDIATELY"as a last resort. According to them, he couldn't prevent a session from filling out a cancellation of the updates because the operating system process stops immediately. Read that a description of the clause POST_TRANSACTION makes me think of issueing what the command against a long query term will allow him continue to run and end the session only after the end of the SQL query. For now I avoid using one of the options of the grid control and stick to my original format in SQL * more.
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BillHello
If I order, "the ALTER SYSTEM KILL SESSION ' xxx, xxxx ';
allows you to mark a session as null and void, restore the ongoing transactions, releases all session locks and partially recovery of resources from the session. If the session is running an activity that must be completed, as the wait for a response from a remote database or rolling back a transaction, then Oracle Database expects this activity complete, mark the session as being finished and then returns control to you.
If I order, "ALTER SYSTEM KILL SESSION ' xxx, xxxx" IMMEDIATE. "
Specify IMMEDIATE to load the Oracle database to ongoing transactions, releases all session locks, recover session state full and immediately returns control to you. You wrote end immediately with no cancellation of updates?. This is not so, it will rollback all not updated.
If I execute the command ' ALTER SYSTEM KILL SESSION ' xxx, xxxx "POST_TRANSACTION;"
The POST_TRANSACTION parameter allows operations to be completed before the session is disconnected. If the session has no current transaction, then this clause has the same effect as to KILL SESSION.
Reference:-[http://download.oracle.com/docs/cd/B19306_01/server.102/b14200/statements_2013.htm#SQLRF00902]
HTH
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Hi all
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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?
Thank you very much in advance.select sid,serial#,osuser from v$session where status='KILLED'; SID SERIAL# OSUSER ---------- ---------- --------------- 56 8542 SYSTEM - - 42 rows selected
ConcerningIs it possible that I have kill all sessions that are marked as being KILLED to CHANGE the SYSTEM COMMAND?
No such statement available, you have to kill one by one with alter system kill session command but you can generate all the cmd like
select 'alter system kill session ' || '''' || sid || ',' || serial# || '''' || ' immediate;' from v$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.
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Analytic Workspace session not getting killed
Hi all
I created and mapped to a time dimension in the analytic workspace the user and proceeded to fill the option "keep the Dimension". For some reason, it took longer than expected (more than 15 minutes to the usual 5 minutes) to fill the size so I killed the session using Enterprise Manager ("marked to kill Session").
Unfortunately, it's been more than three hours and the session is always contained in the EM performing an activity (Status: KILLED).
"The AWM client is unable to fix another session resulting in error ' java.sql.SQLException: ORA-33290: analytic workspace < string > cannot be fixed in the mode that you asked because another user has attached in an incompatible mode.
Questioning shows view v$ aw_olap an existing session into "READ WRITE" attach with changing mode permanently the values for the columns to display.
Even to truncate the underlying dimension table does not work even if there is no locked in the database objects.
How can I fix it? Any help will be appreciated.
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11.1.0.7.0 client (Windows Server 2008)Kill - 9
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session is not killed properly
I use oracle 10g (10.2.0.1) in Redhat Ent Linux 5.0.
In my production database, one of my session which is connected thorugh 'TOAD' program is hanged.
I kill this session several times but not removed from the session and it shows the status is 'DEAD '.
Here is the result:
SQL > select username sid, serial #, session state $ v where status = 'KILLED ';
USERNAME SID SERIAL # STATUS
------------------------------ ---------- ---------- --------
1860 37381 KILLED DBPROD
SQL > alter system kill session '1860,37381';
alter system kill session ' 1860,37381'
*
ERROR on line 1:
ORA-00031: session marked for kill
SQL > alter system kill session '1860,37381' immediate;
alter system kill session '1860,37381' immediate
*
ERROR on line 1:
ORA-00031: session marked for kill
Also during the session to kill, there is no show message in the log file of the alerts associated with the kill command.
Now, please help me how I can fix this without closing the database.
EDIT the SYSTEM KILL SESSION does not remove the session. The session dies only when the user actually tries another SQL operation and is thrown a mistake - that is to say when Oracle kills the process.
The other option is to use an OS command to kill the server process - but you need to know how to do this and identify the right process to kill (assuming not shared server and dedicated server connections).
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delete the entry for killed / sniped v$ session meeting
Hi all
In our database (11.2.0.1.0) of production running on windows server 2008 several client session list inactive last hour of 4-5 and I want to kill this session because that all sessions are dedicated to do this so I've created a set of resource plan his idle time after certain interval session status shows killed , but he is not removing of session entries $ v but our customer demand is there must be clear v $ session so for this I used command BACK utility taskkill to kill the particular operating system process, so I want to know what is the smart way to do it.We're talking about behavior, not a problem.
In a dedicated server environment when the session is killed and the rollback ends the process so a join between v$ session and v$ process will fail. The v$ entered session also disappears usually fairly quickly, although I've seen cases where the v$ session entrance hung around until the instance has rebounded. But normally the Oracle will overlap the v$ session entry with a new session using the same sid but another serial # seconds on a busy system.
Mark @ http://dbaspot.com/oracle-server/40419-killed-sessions.html
Doc-id 1023442.6 MetaLink is also something confirm it.
Also see link below and the last reply by Mr. Braj Kishore Mahto.
http://dbaforums.org/Oracle/index.php?showtopic=3039Concerning
Girish SharmaPublished by: Girish Sharma on November 21, 2012 17:35
So what is preferable in this respect:
ALTER SYSTEM DISCONNECT SESSION
The ALTER SYSTEM DISCONNECT SESSION syntax is an alternative method for killing Oracle sessions. Unlike the KILL SESSION command requesting the session to kill himself, the DISCONNECT SESSION command kill the dedicated server process (or virtual circuit when the shared use of Sever), equivalent to kill the operating system server process. The basic syntax is similar to the KILL command SESSION with the addition of the POST_TRANSACTION clause. The SID values and serial of the meeting concerned can be replaced in one of the following instructions.
SQL > ALTER SYSTEM DISCONNECT SESSION ' sid, serial # ' POST_TRANSACTION;
SQL > ALTER SYSTEM DISCONNECT SESSION ' sid, serial # ' IMMEDIATE;http://www.Oracle-base.com/articles/Misc/killing-Oracle-sessions.php#disconnect_session
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Hello
While killing a session, I get a message like
QL > alter system kill session '802,30515' immediate;
alter system kill session '802,30515' immediate
*
ERROR on line 1:
ORA-00031: session marked for kill
I checked after a few hours again, I get the sid and the n serial form v$ session
but the status of the user of the user is as 'dead '.
SQL > select user name, session status $ v where sid = 802;
STATUS OF USER NAME
------------------------------ --------
APPS KILLED
If the session was killed or not?
Thank you
Vijay887400 wrote:
Its Linux X 86 64-bitBut for some sessions, they will be killed immediately after alter system kill session command.,.
but in this case it is not end immediately?
What could be the cause?
Internal Oracle session remains as long as the remains of operating system processes.
Kill - 9
Since you have already issued ALTER SYSTEM KILL SESSION
You can't get the process ID of the Oracle's OS.You can associate up to the session Oracle with OS time as evidenced by time of CONNECTION
ps - ef | LOCAL grep -
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