Oracle idle sessions & SQL responsible

Hi Gurus,
I am using the following SQL to identify the idle sessions:
select status "st", sid "sid", username "user", program "prg"
from v$session
where username is not null
and audsid <> userenv('SESSIONID')
order by status;
I need to identify the SQLs responsible or might be responsible to generate idle sessions. Is there any SQL to do that.
Thanks
Amitava.

amitavachatterjee1975 wrote:
Hi Gurus,
I am using the following SQL to identify the idle sessions:
select status "st", sid "sid", username "user", program "prg"
from v$session
where username is not null
and audsid <> userenv('SESSIONID')
order by status;
I need to identify the SQLs responsible or might be responsible to generate idle sessions. Is there any SQL to do that.
Thanks
Amitava.if/when session is actually IDLE, then it is NOT executing any SQL!

Similar Messages

Oracle idle sessions

Hi Gurus,
I need to learn more about Oracle idle sessions, why/how they are created and why some of the idle sessions does not terminate easily.
Is there any ways to determine which SQLs are responsible for idle sessions. Also SQL way to identify and destroy idle sessions.
Does this make sense.
Thanks
Amitava.

First, why do you believe that idle sessions are a problem?
A session is IDLE if it is not, at the instant you query the data dictionary, executing a SQL statement. Most sessions will be idle most of the time because most of the time your applications are waiting on humans to do something or spending time processing data in the application. Just because a session is idle now is no reason to believe that it won't be ACTIVE shortly.
A modern three-tier application will generally create a pool of connections to the database on each middle tier server. Generally, those pools will be sized for at least reasonably busy conditions. If you happen to look at the database when the application isn't particularly busy, you're likely to see a bunch of idle sessions. That's not a problem. While you could force the application server admins to decrease the size of their connection pools, that may negatively affect the performance of the applications and introduce extra load on the database server for no real benefit.
Justin

Oracle Forms and Report Services kill idle sessions

In our Oracle Forms and Report Server many user open session and stay idle, i want to drop such sessions after 10 minutes to free resources.
Please help how to proceed

Default settings for forms session timeout is 15 Minutes. But heartbeat parameter (default 2 minutes) doesn't allow AS to close idle sessions. So define heartbeat=20 in your formsweb.cfg file.
As far as reports are concerned set engineResponseTimeout="15" in your report server configuration file. This setting will not allow any report to remain in the queue for more than 15 minutes.
Regards
Mohsin Iqbal

Oracle 11gR2 to SQL Server 2008 R2 - Problem executing SP on SQL server

Hi,
I have this problem: Executing a sp in SQL server from oracle
--------------------ORACLE SP--------------------
create or replace
PROCEDURE DRIVER_SP
AP IN OUT appl_param%ROWTYPE
as
v_sp_name varchar2(50);
v_control_id number;
val VARCHAR2(100);
cur INTEGER;
nr INTEGER;
BEGIN
v_sp_name := ap.MESSAGE_MISC_TEXT;
v_control_id := ap.control_id;
cur := DBMS_HS_PASSTHROUGH.OPEN_CURSOR@dblink_sqlserver;
DBMS_HS_PASSTHROUGH.PARSE@dblink_sqlserver(cur, 'execute ' || v_sp_name || ' ' || to_char(v_control_id));
LOOP
nr := DBMS_HS_PASSTHROUGH.FETCH_ROW@dblink_sqlserver(cur);
EXIT WHEN nr = 0;
DBMS_HS_PASSTHROUGH.GET_VALUE@dblink_sqlserver(cur, 1, val);
END LOOP;
DBMS_HS_PASSTHROUGH.CLOSE_CURSOR@dblink_sqlserver(cur);
driver_ap01_log_msg('Procedure returned: ' || val);
commit;
exception
when others then
driver_ap01_log_msg(sqlerrm);
END DRIVER_SP;
--------------------SQL Server SP-----------------------
ALTER PROCEDURE [dbo].[PA01_SP]
@control_id integer
AS
begin
--update PA01
--set infile_control_id = @control_id
--insert into dbo.PA01LOG(msg) values('test')
select 0
end
THE PROBLEM: Oracle SP calls SQL Server SP and any time I try to INSERT/UPDATE/DELETE (DML) within SQLServer SP it throws an exception on Oracle's end. Once I comment all DML code the proc runs fine.
+"ORA-28511: lost RPC connection to heterogeneous remote agent using SID=ORA-28511: lost RPC connection to heterogeneous remote agent using SID=(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=xxxxxxx)(PORT=1511))(CONNECT_DATA=(SID=dg4msql)))+
+ORA-02063: preceding line from DBLINK_SQLSERVER"+
Please help.
Thanks

Thanks for your response, it got me closer to my goal. I'm still facing one problem:
Let me explain what I need to achieve
Purpose
Execute an Oracle stored procedure which in turn executes a stored procedure on remote SQLServer which updates local tables on that SQLServer.
Observations
The execution of both procedures completes successfully. However, an explicit COMMIT statement must be issued on the Oracle session which initiated the transaction before any data could be read from the SQLServer updated table.
The following is test exercise for proof of concept.
PL/SQL code
declare
out_arg integer;
ret_val integer;
begin
out_arg := 0;
ret_val := "dbo"."ZZZ_SP"@DBLINK_SQLSERVER(10, out_arg);
dbms_output.put_line(to_char(out_arg));
end;
SQLServer code
ALTER procedure [dbo].[ZZZ_SP] (@arg1 integer, @arg2 integer output)
AS
begin tran tran1
insert into dbo.PA01LOG(msg) values('ddd')
commit tran tran1
set @arg2 = @arg1 * 100
select -1
GO
I have put the Oracle gateway in Single_Site mode to avoid two phase commit. I want SQLServer to be able to run its own transaction management. I don't want Oracle to be responsible for completing the transactions which take place within SQLServer.
I fear there might be a gap in my knowledge.
Any ideas why I need to issue a COMMIT in Oracle session to release the lock from SQLServer table?
Thanks

Idle session

hello, what is the different between idle session and active session in oracle?
is idle session is treated as an 1 user who is currently connected? or user who is not connected to the db.
because on my session monitor, there's a lot of idle

HI,
idle session
User connected to database but doing nothing then there session is called idle session.
You can limit the idle time for a session. If the time between Oracle calls for a session reaches the idle time limit, then the current transaction is rolled back, the session is aborted, and the resources of the session are returned to the system. The next call receives an error that indicates the user is no longer connected to the instance. This limit is set as a number of elapsed minutes.
active session
user connected to database and doing there session is active.
active and inactive session
A session is ACTIVE when it is making a SQL call to Oracle Database. A session is INACTIVE if it is not making a SQL call to the database.

Oracle error: java.sql.sqlrecoverableException: Closed Connection

need help on this closed connection
getting oracle error: java.sql.sqlrecoverableException: Closed Connection when running a java application using tomcat api to oracle 11g database EE 11.2.0.3.0 on windows 2008 R2
The process is reading data from an Oracle database using user_sdo_geom_metadata , memory allocated to DB is 5GB, java pool size 1G allocated , below is the code which gets data from Oracle
<NamedDataSourceDefinition:NamedDataSourceDefinition xmlns:NamedDataSourceDefinition="http://www.mapinfo.com/mxp" xmlns="http://www.mapinfo.com/mxp" xmlns:gml="http://www.opengis.net/gml"xmlns:ns2="http://www.mapinfo.com/midev/service/common/v1" xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:v1="http://www.mapinfo.com/midev/service/namedresource/v1"version="MXP_WorkSpace_1_5">
<ConnectionSet/>
<DataSourceDefinitionSet>
<DBDataSourceDefinition id="TXLANDMARKS">
<DataSourceName>txlandmarks</DataSourceName>
<ConnectionMember>
<InlineDBConnection dbType="oracle">
<JDBCDriverParameters>
<JDBCUrl>jdbc:oracle:thin:@NOIORAENT2K8-64:1521:FMETEST</JDBCUrl>
<DriverPropertySet>
<Property name="user" value="NOIDADATADEV"/>
<Property name="password" value="mndata"/>
</DriverPropertySet>
</JDBCDriverParameters>
</InlineDBConnection>
</ConnectionMember>
<DBTable owner="NOIDADATADEV" useQuotes="true">TXLANDMARKS</DBTable>
</DBDataSourceDefinition>
</DataSourceDefinitionSet>
<DataSourceRef ref="TXLANDMARKS"/>
</NamedDataSourceDefinition:NamedDataSourceDefinition>
Both the machines can ping to each other successfully, no firewall exists between them, these are connection setting been used in pooling-datasource-factory.properties
poolingDataSourceFactoryClass=com.mapinfo.midev.dbms.jdbc.TomcatDataSourceFactory
# what follows are properties specific to com.mapinfo.midev.dbms.jdbc.TomcatDataSourceFactory
# defaultAutoCommit - the default auto commit state of the connection. if
# not set the assumes the driver default
# defaultAutoCommit =
# (int) The maximum number of active connections that can be allocated from # this pool at the same time. The default value is 20
maxActive = 10
# (int) The maximum number of connections that should be kept in the pool at # all times. Default value is maxActive. Idle connections are checked # periodically (if enabled) and connections that been idle for longer than
# minEvictableIdleTimeMillis will be released.
maxIdle = 10
# (int) The minimum number of established connections that should be kept in the pool at all times. The connection pool can shrink below this number if # validation queries fail. Default value is 10
minIdle = 5
# (int)The initial number of connections that are created when the pool is # started. Default value is 10
initialSize = 5
# (int) The maximum number of milliseconds that the pool will wait (when # there are no available connections) for a connection to be returned before # throwing an exception. Default value is 30000 (30 seconds)
# maxWaitMillis = 30000
# (int) The number of milliseconds to sleep between runs of the idle # connection validation/cleaner thread. This value should not be set under 1
# second. It dictates how often we check for idle, abandoned connections,
# and how often we validate idle connections. The default value is 5000
# (5 seconds).
# timeBetweenEvictionRunsMillis = 5000
# (int) The minimum amount of time an object may sit idle in the pool before
# it is eligible for eviction. The default value is 60000 (60 seconds).
# minEvictableIdleTimeMillis = 60000
# (boolean) Flag to remove abandoned connections if they exceed the
# removeAbandonedTimout. If set to true a connection is considered abandoned
# and eligible for removal if it has been in use longer than the
# removeAbandonedTimeout Setting this to true can recover db connections
# from applications that fail to close a connection. See also
# logAbandoned The default value is false.
# removeAbandoned = false
# (int) Timeout in seconds before an abandoned(in use) connection can be
# removed. The default value is 60 (60 seconds). The value should be set to
# the longest running query your applications might have.
# removeAbandonedTimeout = 60
# (boolean) Flag to log stack traces for application code which abandoned a
# Connection. Logging of abandoned Connections adds overhead for every
# Connection borrow because a stack trace has to be generated. The default
# value is false.
# logAbandoned = false
# (long) Time in milliseconds to keep this connection. When a connection is
# returned to the pool, the pool will check to see if the now
# - time-when-connected > maxAge has been reached, and if so, it closes the
# connection rather than returning it to the pool. The default value is 0,
# which implies that connections will be left open and no age check will be
# done upon returning the connection to the pool.
# maxAgeMillis = 0

Hi,
I understand that you have raised a SR for this issue which is being worked upon by our team.
Additionally, please note that the "Closed connection" error typically happens because a timeout parameter of some sort timed out the connection. This could be a parameter specified in your datasource, in your application code, or network (such as a firewall).
You may also want to -
1. check your database to be sure it is not timing out connections.
2. Make sure your network is running efficiently and that it can provide fast connections,
3. Check your Java Virtual Machine (JVM) Code Cache For Oracle Enterprise Data Quality for any memory related issues
Thanks,
Shwet

ORACLE server session terminated by fatal error

Hi,
When i try to startup my database(10g), i am getting this error after database monted.
ORA-00603: ORACLE server session terminated by fatal error.
(Startup nomount is ok)
conn /as sysdba
Total System Global Area 1048576000 bytes
Fixed Size 1223392 bytes
Variable Size 343934240 bytes
Database Buffers 700448768 bytes
Redo Buffers 2969600 bytes
Database mounted.
ORA-00603: ORACLE server session terminated by fatal error
Alert.log:
Errors in file /u01/app/oracle/product/10.2.0/db_1/admin/db/udump/db_ora_9917.trc:
ORA-00603: ORACLE server session terminated by fatal error
ORA-00600: internal error code, arguments: [4194], [24], [14], [], [], [], [], []
ORA-00600: internal error code, arguments: [4194], [24], [14], [], [], [], [], []
The trace file is 1,6GB(!)
Trace file:
----- Redo read statistics for thread 1 -----
Read rate (ASYNC): 26Kb in 0.78s => 0.03 Mb/sec
Total physical reads: 4096Kb
Longest record: 0Kb, moves: 0/62 (0%)
Change moves: 35/122 (28%), moved: 0Mb
Longest LWN: 14Kb, moves: 0/13 (0%), moved: 0Mb
Last redo scn: 0x0000.31539752 (827561810)
NO VALID LOG MEMBER FOR SEQ# 20884 OF THREAD 1!
NO VALID LOG MEMBER FOR SEQ# 20883 OF THREAD 1!
*** 2011-01-06 06:18:51.782
ksedmp: internal or fatal error
ORA-00600: internal error code, arguments: [4194], [56], [49], [], [], [], [], []
Current SQL statement for this session:
update service$ set name = :1, name_hash = :2, network_name = :3, creation_date = :4, creation_date_hash = :5, deletion_date = null, goal = :6, flags = :
----- Call Stack Trace -----
Thanks

Hello,
ORA-01194: file 1 needs more recovery to be consistent
ORA-01110: data file 1: '/u01/app/oracle/product/10.2.0/oradata/db/system01.dbf'The system01.dbf which belongs to the Tablespace SYSTEM is still inconsistent.
So, I think you'll need to start from a Backup and apply all the Archived Redo logs before the ORA-600 occured.
More over, try to open a Service Request to My Oracle Support and, send them all the Traces Files and Alert Log so that they can follow all the actions which has occured on this Database. You may need their help.
Best regards,
Jean-Valentin

Oracle State Session Store throws an Unhandled Exception with Xml

I wish to use the Oracle.Net Session Store to store a value to session. The value or object if you prefer is marked as serializable in order to be placed within the store.
Unfortunately, when running the code I get an unhandled exception error being displayed to the screen. The code itself does not fail at any point in debug. The actual error message in full is "An unhandled exception occurred 'Type 'System.Xml.XmlDocument' in Assembley 'System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' is not marked as serializable"
Now, we have xml fields in our classes, and we have tried all sorts things, but I would like to know whether there is a far simpler way of saving xml documents to session when using Oracle.Net Session Store. We have also tried saving sessions using the ASP.Net State Server and hit exactly the same error.
Does anyone have any good ideas/solutions?

Hi Muthuraja,
The warning in error log is caused by the error you mentioned above. Based on my search, the error message can be caused by various reasons.
To troubleshooting the issue, please refer to the following steps:
Check the "Idle Time-out" option of the application pool, if its value is not zero, set it to a larger integer value such as 120.
Check the "Virtual Memory Limit" option of the application tool, if its value is not zero, set it to 0 instead.
Set the "Maximum Worker Processes" option of the application tool to 1.
In the web.config of the Web Application, set the “cookieless” to “true” like below:
<sessionState mode="InProc" cookieless="true" timeout="120"/>
Modify the httpRuntime settings like below:
<httpRuntime maxRequestLength="20000" executionTimeout="600"/>
Reference:
sessionState Element
httpRuntime Element
AspNetSessionExpiredException
If you have any more questions, please feel free to ask.
Thanks,
Wendy Fu
If you have any feedback on our support, please click
here.

Oracle Idle Time errors

Any suggestions on how I can avoid "ORA-02396: exceeded maximum idle time, please connect again" errors?
Getting rid of the idle time restriction on the database is not an option, so I was looking for a parameter to tweak so Pages recovers better from Oracle idle timeouts.
What's happening are javascript errors and other errors in the logs when there is a timeout.

You may have issues that are not linked to timeout. Please check your database instance alert log:
$ oerr ora 3113
03113, 00000, "end-of-file on communication channel"
// *Cause: The connection between Client and Server process was broken.
// *Action: There was a communication error that requires further investigation.
//          First, check for network problems and review the SQL*Net setup.
//          Also, look in the alert.log file for any errors. Finally, test to
//          see whether the server process is dead and whether a trace file
//          was generated at failure time.

Idle session and active session

how can I clear/remove the session user in oracle 10g express, via asp.net (1.1), is it possible?
is idle session can affect the number of concurrent users? or only active session...

coz right we're having a problem. first of all, i would like to say that I'm a oracle novice.
this is the scenario, we have 1 server (p4 2.2ghz w/ 2gig of memory), oracle 10g express install and our application front end (asp.net 1.1 is also install). while running of application and reached 5 or more that users have connected tru asp.net, the connection to the oracle is refuse.
can you help me regarding our problem.
thanks in advance

Append Hint causing ORA-00603: ORACLE server session terminated by fatal er

Hi All,
I am facing Service Terminated by Fatal Error when using APPEND hint in my Insert statement.
We are executing the below commands in Oracle 9ir2.
This is the scenario which I am facing.
SQL> insert into VALIDTRANSACTIONLINE select * from TRANSACTIONONLINE;
1910534 rows created. --works fine
SQL> rollback;
Rollback complete.
SQL> insert /*+ append */ into VALIDTRANSACTIONLINE select * from TRANSACTIONONLINE;
ERROR at line 1:
ORA-00603: ORACLE server session terminated by fatal error
FYI: The table is having LOGGING-NO and the tablespace for this table is having more than 5GB of free space and undotablespace is also around 650 MB and the total size of insertion will be less than 50MB records.
Has anyone faced this kind of issue.
Appreciate your response.
Thanks,
Madhu K.

Hi,
FYI:
I can see the undotablespace is having 0MB free space.
it is a very strage issue.
With Undotablespace Zero, I was able to insert the data having APPEND Hint but no indexes on the table.
But when I create an Index on the Table and the Index is also in NOLOGGING mode, the Insertion is again failed with FATAL Error.
Ex: No Index on the table.
SQL> INSERT +append
2 INTO credit
3 SELECT /*+ driving_site(t1) */ * FROM tru_cmp.credit@EPSARCDV_TO_EPSDEV1.DIRECTV.COM t1 WHERE PERIODSEQ =300;
1999401 rows created.
CREATE UNIQUE INDEX TRU_CMP.CREDIT_PK_IND ON TRU_CMP.CREDIT
(CREDITSEQ)
NOLOGGING
TABLESPACE TALLYINDEX
NOPARALLEL
INSERT +append
INTO credit
SELECT /*+ driving_site(t1) */ * FROM tru_cmp.credit@EPSARCDV_TO_EPSDEV1.DIRECTV.COM t1 WHERE PERIODSEQ =300;
ERROR at line 3:
ORA-00603: ORACLE server session terminated by fatal error
Can you let me is this related to the Data File issue, so that I can ask the DBA to look into this as I dont have access to those alert log files.
Thanks,
Madhu K.

Having too many idle sessions?

Hi,
We have too many idle sessions at the database end? How can it be controlled apart from using database resource manager? Since some users execute long operations? Please clarify.
Thank you,
Adith

Having 5 of 60 sessions active is entirely reasonable. A session is ACTIVE only if, in that particular instant, the session is actively running a SQL statement. The vast majority of the time, a database connection will be idle as it waits for a user to decide what to do next, for the client application to process the data that was returned, etc.
If you're not encountering any problems, I wouldn't change anything. Setting IDLE_TIME in a profile will kill connections after a period of time, but that may cause problems for users & applications which are not designed to expect that their database connection can be terminated while they were using it.
Justin

Diffrence inactive,idle sessions

hi
what is the diffrence between inactive and idle sessıons.

desc v$version;
STATUS VARCHAR2 (8) --> Status of session:
If Active, session currently executing SQL commands
if Inactive, session not executing SQL commands.
other possibilities are killed,cached and sniped.
i think idle session is inactive session according to v$version
if you want to disconnect them :
alter system set resource_limit=TRUE scope=both;
alter profile default limit idle_time 15; --> 15 subject to change.

Kill idle session automatically

dear experts
How to kill idle/inactive session automatically, based on its idle time?
Which parameter should change?
what is the relation between session, process ,thread.
plz reply

To kill idle session automatically, create a profile with idle_time parameter and assign it to the involved user accounts:
http://www.psoug.org/reference/OLD/profiles.html?PHPSESSID=d47ba8ea1ed4aa759bea200eb397609c
From Concepts Guide http://download.oracle.com/docs/cd/B19306_01/server.102/b14220/process.htm#sthref1475
A session is a specific connection of a user to an Oracle instance through a user process
Edited by: P. Forstmann on May 27, 2009 10:01 AM

DBMS_SYSTEM : 다른 USER나 SESSION에 SQL TRACE 걸기

제품 : SQL*PLUS
작성날짜 : 2002-04-12
DBMS_SYSTEM : 다른 USER나 SESSION에 SQL TRACE 걸기
==================================================
Purpose
DBA user등에서 일반 user가 실행하는 sql의 trace를 떠 보고 싶은
경우가 있다. 이렇게 다른 user session에 sql trace를 받을 수 있는
방법에 대해 알아보자.
Explanation
SQL*Plus에 접속하여 SQL trace를 거는 것이 아니라 DBMS_SYSTEM package를
이용하여 다른 유저나 다른 세션에서 특정 세션을 지정하여 SQL trace를 걸
수 있다.
( DBMS_SYSTEM package는 Oracle 7.3부터 사용할 수 있다. )
DBMS_SYSTEM package를 사용하기 위해서는 먼저 다음의 script를 실행한다.
$ cd $ORACLE_HOME/rdbms/admin
$ sqlplus sys/manager
SQL> @dbmsutil
SQL> @prvtutil.plb
dbmsutil.sql file은 sys user나 svrmgrl 에서 실행시킨다.
이 package를 다른 유저에서 실행하려면 미리 grant를 주어야 한다.
$ sqlplus sys/manager
SQL> grant execute on dbms_system to system;
[ DBMS_SYSTEM package ]
- DBMS_SYSTEM.set_sql_trace_in_session(sid, serial#, TRUE)
지정된 session에 대해 SQL trace를 실행하여 user_dump_dest parameter에
지정된 위치에 trace file이 생성된다.
- DBMS_SYSTEM.set_sql_trace_in_session(sid, serial#, FALSE)
지정된 session에 대한 SQL trace를 해제한다.
Example
system user에서 scott user를 지정하여 SQL trace를 건다.
sqlplus system/manager
SQL> select sid, serial#
from v$session
where username = 'SCOTT';
SID SERIAL#
8 12
SQL> exec sys.dbms_system.set_sql_trace_in_session(8, 12, TRUE);
-> scott user에 대한 SQL trace가 실행된다.
SQL> exec sys.dbms_system.set_sql_trace_in_session(8, 12, FALSE);
-> scott user에 걸린 SQL trace가 해제된다.
참고 :
Dedicate 방식으로 접속한 user는 user_dump_dest/ora_processid.trc로
생기며, MTS 방식으로 접속한 user에 대해서는
background_dump_dest/s000_22509.trc 와 같이 MTS server name으로
생성된다.
또한, 위 경우 모두 trace file을 한번 삭제한 후에 다시 그 process를
사용하는 session에 대해 trace를 걸면 trace file은 생기지 않는다.

Oracle idle sessions & SQL responsible

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