I killed some 70 sessions which where inactive couple of days ago using alter system kill session(sid,serial#) immediate;
But even after killing them it still exists in the v$session view when I query select sid,serial# from v$session where username is not null; It has the same sid and serial#....I tried killing them every now and then but it still shows those exists
How to kill of a killed session?
I had killed inactive session using alter system kill session 'sid,serial#';
after that that sessions marked as killed and still get in v$session.
Then i try to get spid so that i can killed then from os command kill -9 spid
but when i try to get that join with v$process, no row select.
select * from v$session where username ='CAS' and status ='KILLED'
return 205 records.
select p.*,s.username,s.program,s.machine,s.status from v$process p,v$session s
where p.addr=s.paddr and s.status='KILLED'
return no record.
I have installed Oracle Database 11g.2 by database configuration assistant on windows XP as and adminstrator on my laptop(no connection to network),but when I want to create database I face this warning: error securing database control ,Datatbase control has been brought up in non-secure mode . to secure the database conntrol execute following command....(error is attached).
View 7 Replies View RelatedMy application is opening a lot of sessions in my DB server. I applied resource_limit=true and idle_time=15 min. ans assign this profile to all application user.
Now I am seeing a lot of sessions having status sniped in v$session.
I want to clean up these sniped sessions and what they mean.
I am using oracle 10g as server in my lab. I faced some problems initially, but later after increasing the USERS tablespace it is working fine.
But there is still one problem. During the query execution some queries will be blocked and it doesn't leave any consequent queries to execute from the same user.
The blocked sessions will be displayed in the admin page under blocking sessions link. There is a option to kill the session. But when i do that, it affects all the users and the connection will be lost to all the users. again I have startup the database from beginning.
We had an issue last week were we had a session with a very basic SQL query lock up the database, spiking the CPU at 100%. When you would kill the session, the lock would just jump to another session and so on. We finally had to restart the database since our clients were being kicked out. After the restart of the database, the LGWR ended up locking and held the CPU between 85-95%. The archive logs were switching every 5 minutes, when normally it would be every 45min. We spoke with Oracle Support, but they just ended up brushing the issue off and saying it was a hardware issue and were not able to provide any kind of backing to that.
View 4 Replies View RelatedI have a simple question about database sessions. The value of parameter "sessions" is set to 500 and the users connect to database through an application server(Jboss). There are more than 500 users connect to the database through application.
My question is, how more than 500 users can connect to the database without any issue, if we set the value of "sessions" parameter to 500?
I have a table with counter value which will be incremented or decremented by several application servers.
SQL> select * from test;
COUNTER
----------
10
Application servers(multiple servers) will be running update against this row for increasing the counter value or decreasing the counter value.
update test set counter=counter+1;
update test set counter=counter-1;
update test set counter=counter+1;
update test set counter=counter+1;
So when update happens concurrently to this table will the counter value gets messed up?
I did a small test by opening multiple sessions for running update and the result I got for above update statement was 11,10,11,12.
But our developer is bit skeptical about this approach and he is using select for update and then updating the row.
Which approach will be better?
I'm sure you are all familiar with proxy users, they've been around since 9i: orcl> create user low identified by low;
User created.
orcl> create user high identified by high;
User created.
orcl> grant dba to high;
Grant succeeded.
orcl> alter user high grant connect through low;
User altered.
orcl> connect low[high]/low
Connected.
orcl> sho user
USER is "HIGH"
orcl>
Is there any way that I can find out which of the current sessions was proxied, and through what user? I know that from within the session I can query my userenv context and find out, but I can't see how to do it otherwise. It must be possible: the audit trail records both the real user and the proxy user.
i can't re-create a datafile.
c:> sqlplus
Enter user-name: sys as sysdba
Enter password:
Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> select name,ts# from v$tablespace;
NAME TS#
------------------------------ ----------
SYSTEM 0
SYSAUX 1
UNDOTBS1 2
USERS 4
TEMP 3
[code].....
why can't it create re-create the datafile even i dropped tablespace with its content and its datafiles?
We have quite a number of sessions in database MES (production) coming from another machine.
From v$session, the program is oracle@WID27 (TNS V1-V3). This WID27 (hostname) consists of quite a number of development databases inside. We have to trace which jobs are actually triggering this, as WID27 are not suppose to connect to production databases.
How can we tell whether the sessions came in is from dblink or from the machine itself?
I am working in development environment which has only 150 gb db size but suddenly it is raised to 250gb within 10 days i want to see which user did what in my database.How we can see what task made what in past 10 days.
View 3 Replies View RelatedMy problem is only on Some Saturday's my Oracle server's Load average goes high (more than 300 ).
-- oracle version 11.2.0.1.0
-- runs on Sun solaris 10
-- Sun fire V 440
-- Sun storEdge 3315 connected to the server.
Same setup is working find with higher volumes without any problem but only on saturday's, that too not on all saturdays, some specific saturdays the load average goes high.
At the time nothing will be processed from the application side and the cpu utilisation goes high upto 95 %.
I am sending necessary information as follows.
vmstat 6 10
kthr memory page disk faults cpu
r b w swap free re mf pi po fr de sr s0 s1 s3 s4 in sy cs us sy id
3 0 0 28660024 6513408 285 212 2044 2 2 0 0 0 17 0 42 830 3469 1380 22 5 74
125 0 0 29027480 6156256 2 6 34 0 0 0 0 0 5 0 10 791 53770 30278 83 17 0
125 0 0 29027680 6157496 29 140 21 1 1 0 0 0 5 0 9 786 52756 30309 83 17 0
116 0 0 29031600 6159896 24 125 0 0 0 0 0 7 3 0 5 819 54081 31069 83 17 0
[code]....
On DB123, I have 2 KILLED sessions which are not disappearing and are holding locks on some tables in ONE schema.
The sessions belonged to ETL process and I have killed them last Friday after they have been hanging for 3 days. Unfortunately, I've also killed the corresponding Unix session - and now I've read on the Internet that in those cases the KILLED sessions might be hanging forever (=until the DB is shutdown).
how to remove these locks.
want to write Procedure to return weeks and days from given set of days.
let suppose we have 72 days to return weeks and days then return should be 7 weeks and 2 days.Can i use date function Or ?
I need the procedure that killed root blocker in RAC environmental 10g, I found the stored procedure for 11g which simple but 10g required some expertise because I want to just exec [procedure] it will kill root blocker either locally and remote node
View 5 Replies View RelatedI have had the following problem open with Oracle support since March 2011 (8 months), and still no resolution.
When I export all our schema's on Sunday night it takes about 1 hour 50 minutes. When I export the same schema's on any other night it takes 7 hours. The only difference is that on Sunday at 4:00am we drop all connections in the connection pools and reestablish new connections. Then 19hours later on Sunday at 23:00 we perform the exports which only take 2 hours to complete.
I have also tried recreating the connections in the connection pools during the week, and the exports have then only taken 2 hours to complete. But the following night after the connections have been used during the day, the exports again take 7 hours. So it appears the export speed gets significantly slower when there are many open connections that have been used and not closed.
From the stats pack report I found 2 SQL statements internal to the export command, that had an order of magnitude in difference when looking at the elapsed execution time between the fast export, and the slow export (see below).
How to speed up the exports without having to drop and recreate the database connections in the connection pools each night.
FAST:
elapsed_time: 430.90
executions: 161,388
Module: exp@Oracle1 (TNS V1-V3)
SELECT COLNAME, COLNO, PROPERTY, NOLOG FROM SYS.EXU10CCL
WHERE CNO = :1 ORDER BY COLNO
elapsed_time: 264.29
executions: 50,349
Module: exp@Oracle1 (TNS V1-V3)
SELECT TOWNER, TNAME, NAME, LENGTH, PRECISION, SCALE, TYPE, ISNULL, CONNAME, COLID, INTCOLID, SEGCOLID, COMMENT$, DEFAULT$, DFLTLEN, ENABLED, DEFER, FLAGS, COLPROP, ADTNAME, ADTOWNER, CHARSETID, CHARSETFORM, FSPRECISION, LFPRECISION, CHARLEN, TFLAGS, 100 FROM SYS.EXU8COL
WHERE TOBJID = :1 ORDER BY INTCOLID
SLOW:
elapse_time: 8264.16
executions: 124,662
Module: exp@Oracle1 (TNS V1-V3)
SELECT COLNAME, COLNO, PROPERTY, NOLOG FROM SYS.EXU10CCL
WHERE CNO = :1 ORDER BY COLNO
elapsed_time: 3877.78
executions: 38,813
Module: exp@Oracle1 (TNS V1-V3)
SELECT TOWNER, TNAME, NAME, LENGTH, PRECISION, SCALE, TYPE, ISNULL, CONNAME, COLID, INTCOLID, SEGCOLID, COMMENT$, DEFAULT$, DFLTLEN, ENABLED, DEFER, FLAGS, COLPROP, ADTNAME, ADTOWNER, CHARSETID, CHARSETFORM, FSPRECISION, LFPRECISION, CHARLEN, TFLAGS, 100 FROM SYS.EXU8COL
WHERE TOBJID = :1 ORDER BY INTCOLID
I use the following export command for each schema:
$ORACLE_HOME/bin/exp user/pass file=somefile.dmp owner=$SCHEMA log=somelog.log buffer=9000000
I have an Oracle Standard edition 11.1.0.7 database on 64bit Linux with a 7GB SGA. I currently export (I use exp not datapump because datapump is a lot slower and we can't use parallel processing features of datapump on a standard edition database) approx 200 schema's each night. The export normally takes 1 hour 50 minutes which is approximately 2 schema's exported every minute. When the exports run slowly each export takes almost 2 minutes to complete.
The database has about 20 GB data and 50 GB indexes. The database has also approx 500 connections via toplink connection pools from 8 application servers.
I have a question i wanted to know that " Is it possible to write the Following Query Using NOT EXISTS
SELECT * FROM DEPT WHERE DEPTNO NOT IN (SELECT UNIQUE DEPTNO FROM EMP);
And one more doubt is there, can we use join to get same result.
I have set my processes and session value in my database as 1000 and 1248 respectively. I am using 11.2.0.1 but when I restart my DB it showing me sessions=1524...its too high value then what I set.I don't know why it showing higher value than the value I set...
ALTER SYSTEM SET processes=1000 SCOPE=SPFILE;
ALTER SYSTEM SET sessions=1248 SCOPE=SPFILE;
Starting up:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options.
Using parameter settings in server-side spfile /u02/app/oracle/product/11.2.0/db_1/dbs/spfileeng11g02.ora
System parameters with non-default values:
processes = 1000
sessions = 1524
And one more thing is there any recommended formula for calculate sessions in 11g? [ I found one formual from google:
SESSIONS derived: (1.1 * PROCESSES) + 5
One of our DB server is high on CPU utilization, as per the AWR we found couple of queries are running many times and taking huge CPU, hence we need to know from which user these queries are runnings.find the session information as per the sql id?
View 9 Replies View Relatedi see in my alert.log this message:
Errors in file /oracle/BWP/saptrace/usertrace/bwp_ora_2728058.trc:
ORA-01114: IO error writing block to file 1030 (block # 602122)
ORA-27063: number of bytes read/written is incorrect
IBM AIX RISC System/6000 Error: 28: No space left on device
Additional information: -1
Additional information: 180224
But this file_id i don't have in my database, i am making these queries:
SQL> select FILE_ID from dba_temp_files order by FILE_ID;
FILE_ID
----------
1
2
3
4
5
6
7
8
9
[code]....
I don't have this file_id, why alert.log is showing me it? Of course, nobody has created this datafile and nobody has removed it too.
i have a procedure like create or replace procedure studrec( a in sid%rowtype)asi sid%rowtype;beginselect sid into ifrom students; i need to check whether sid is exist in the variable i or not
View 5 Replies View RelatedIn our databace there are around 300 sessions were in inactive state.
Database is not releas the sessions.
our db shows more than 200 INACTIVE Sessions ; and the DBA plans to reboot the db to get rid of these sessions . Can we not KILL these sessions and avoid the reboot ?
View 4 Replies View RelatedI'm using Toad 11.6, I can see about 156 sessions for the database in the session browser but when I do a select from v$session, only 40 sessions are showing up. I was able to look at all the sessions until yesterday. I tried several views like v$session, v$open_cursor etc, but only 60 sessions show up. I'm connected to the database using same user login yesterday and this morning.. May be this user had some privileges revoked last night??If so is it possible to limit sessions in these views (v$session etc) but it's strange that I can see them in the session browser in Toad. 'm very confident that there are 156 sessions in the database but it's just that I'm not able to see them in the v$session etc views. I need to troubleshoot a session but it is not showing up in any views.
View 9 Replies View RelatedOracle database 11g Expression Edition 11.2.0.2
I want to change the the number of processes to 150 (default is 100) I did this by issuing the below command.
alter system set processes=150 scope=spfile;But why that modified value is not being reflected?
select name, value from v$parameter where name in ('sessions','processes','transactions');
NAME VALUE
-------------------- -----
processes 100
sessions 172
transactions 189
I have a script like this:
------------------------------------------------------------
DROP TABLE CON_TEST CASCADE CONSTRAINTS ;
CREATE TABLE CON_TEST (
IDI NUMBER(10,0),
USERID VARCHAR2(10),
PWD VARCHAR2(10),
NOTE VARCHAR(100)
)
----------------------
But i think if table CON_TEST doen't exist, an error message will appear. I know that in SQL Server we can check if table exists or not. So, i wonder if we can do that in Oracle?
By the way, is there any way to run a file script that contents TABLES, STORED, ... on a developed PC connect to oracle db server? (in case, i'm developing on PC, using Net Service Name to conect to Oracle DB Server)
following is a query which i find difficult to understand why EXISTS is failing. There are two scenarios where if i block LINE 30 and unblock line 31 of the code then one record is returned.
SELECT A.ENTITY_CODE,
A.VRNO,
A.VRDATE,
[Code]....
Which is the best way to check whether a record exists.
DECLARE
l_count NUMBER;
BEGIN
SELECT COUNT(*) INTO l_count FROM emp WHERE empno=7839;
IF l_count=1 THEN
dbms_output.put_line('exists');
ELSE
dbms_output.put_line('not exists');
END IF;
END;
[Code]...
how to write a function that returns top value if not exists then next top for combination of customer_id and hierarchy.For instance :
If I've got table
customer_id ,hierarchy, function_code
123 |1 | Z1
123 |2 |67
123 |3 |5B
678 |10 |S2
678 |11 |Z2
345 |2 |11
For the customer ID 123 I want to return Z1, for customer 678 I want to return S2 and for customer ID 345 I want 11
Problem is that I'm new to the concept of looping. I know how to write a function that accepts customer_id as a value write a cursor and then check IF hierarchy = 1 the return FUNCTION_CODE IF hierarchy - 2 THEN ...
but I need something more universal as some of the customers may have hierarchy function 1 and that would be the top one for him but others might have function of hierarchy 10 as top and checking all of the possibilities using if would be just stupid. So how to write something universal ? And of course if function did not find any customer_id then return null.