DB 11g On Min2K3 Take 100% Of One Core 2 To 4 Minutes After Startup
Feb 23, 2013
I have a Windows 2003 VirtualBox instance, to which I assigned 3 out of 4 cores my laptop has. This is a demonstration environment for an Oracle vertical product. I got it from my colleagues. The OS boots without starting the DB services - I did this deliberatley while trying to figure out what is happening.
About 2 and half to 3 and a half minutes after the service is started the oracle.exe "latches onto a core and does not let go" (as best as I can describe what I see). With 3 cores I see 33%-34% cprocessor use in the task manager with oracle.exe doing all the using. Nothing else is started. There is no process of which I am aware which actually uses the DB. I only start the TNS listener and the database service.
Once I start it, the demonstration software uses the database extensively for complex queries. With one of the 3 cores 100% used by the oracle.exe I am running short on CPU at times, which makes the demonstratin seem slaggish, and queries take longer than is really acceptable (not surprising seeing oracle.exe is very busy doing I know not what).
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Oct 9, 2012
I saw big size .core file is generated in $ORACLE_HOME/dbs folder even when no dump dest parameter is set to dbs folder. How to check what causing this genrarating of these files.
PROD1 /oravl01/oracle/11.1.0.7/dbs > ls
1 core.11528 core.15973 core.22231 core.26792 core.29496 core.5262 initCCLCLMP.ora
controlfile.binary.PROD1.Fri core.12504 core.15981 core.2262 core.27129 core.29802 core.5847 initdw.ora
controlfile.binary.PROD1.Mon core.12520 core.1617 core.23115 core.27196 core.30793 core.6176 init.ora
controlfile.binary.PROD1.Sat core.1256 core.1626 core.23276 core.27531 core.30877 core.6221 initTESTCRM.ora
controlfile.binary.PROD1.Sun core.12594 core.16364 core.23681 core.27560 core.30885 core.6535 orapwPROD1
[code]....
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Feb 5, 2013
I read that Oracle RAC which is bundled in Standard Edition can support at max 4 sockets. One of my client has a proposal of using RAC but for 3 nodes each using single 1 quad core Intel processor. As far as i understood, an Intel quad core is a multi chip module and actually is a combination of 2 modules dual core, so each Intel quad core may be counted as 2 sockets. Which yield to the proposal of my client will be failed, as the total number of sockets in it will be: 2*3=6 that exceed the max 4 support.
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Aug 2, 2010
I have a server with Red Hat EL 5.5 running an oracle database 10g R2 and an Oracle Agent 10.2.0.5The disk ran out of space and I realized that there are a lot of files stating with core.xxx such as :
-rw------- 1 gridagent oinstall 17M Aug 2 13:10 core.10348
-rw------- 1 gridagent oinstall 17M Aug 2 13:15 core.10827
-rw------- 1 gridagent oinstall 17M Aug 2 12:30 core.4129
-rw------- 1 gridagent oinstall 17M Aug 2 12:35 core.4772
What's that ?Why are those files generated at $AGENT_HOME/<HOST>_<SID>/sysman/log/ ?
There are more than 24 GB of those files
in nmc.log I can see lines such as:
NMC-00000 2010-08-02 13:25:39 [11760, nmcdbg.c,0440]TRC: Debug context enabled.
NMC-20020 2010-07-30 01:31:58 [23083, nmccole.c,0725]ERR: Could not collect using DSGA Collection method
NMC-20014 2010-07-29 01:31:56 [11258, nmccole.c,0822]ERR: Could not attach to the SGA
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Aug 21, 2012
couple of questions about below parameters, do they measure single processor or avg usage across all processorss and cpus for example will i recieve alert if CPU system time goes above 95% for single processors? or not
CPU Idle Time (%)
CPU System Time (%)
CPU User Time (%)
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Oct 19, 2012
i want one query which return minute between two times which is in this format: 12:00:00 and 06:00:00
so in this it should return 360 minutes.
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Nov 29, 2006
is there a prebuilt function that will round say the time of a sysdate up or down 5 mins? so i entered 5:32pm i would want it to round it down to 5:30pm
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Oct 15, 2012
I have two columns which I need to add together then devide by 60 in order to display that time in minutes. the problem I am facing is that at times I get numbers above 60 and my client doesn't want to see numbers above 60.
i.e (col1 + col 2)/60 = 34.87
what I need to do is make sure that when the number reaches 60 it moves on to 35.
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Mar 31, 2010
I need below proc like...
procedure p1
(
i_time_min number -- minutes to be substracted from timestamp
)
is
v_end_timeinstamp timestamp(6);
begin
[code]....
The problem with above procedure is passing parameter is in minutes and i need to substract the same from sys_extract_utc(current_timestamp) and store result in v_end_timeinstamp in timestamp format only... substracting directly will reduce the days and not the minutes.
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Jun 6, 2011
How to count records per every 3 minutes ? we don't want SPs to get answer. Instead of we want single query to get this output.
The sample data has been enclosed with it.
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Oct 25, 2012
I have a date in_sdate as In parameter defaulted to sysdate. Basing on this in_Sdate I calculate my start and end dates as:
v_sdate TRUNC (in_sdate, 'MI') - 15 / 1440 ;
v_edate := TRUNC (in_sdate, 'MI');
My procedure is run for every 15 minutes. Now suppose if I am running for old dat, then I should get the difference of dates by taking
v_old_Date := v_edate - in_Sdate;
Divide this by 15 , round that value and loop to run the procedure for that n times. My doubt is when I am saying
v_old_date := v_edate - in_sdate ; I am getting expression is of wrong type. How can I take the difference of the dates and get the minutes from that ?
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Jul 2, 2012
in our database 10.0.2.4 with RAC archive log generated each 4 min , did this increase the performance of database and how i can fix it
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Jun 14, 2012
how to get correct result for the time subtraction of minutes for the following query
select (to_date('14-06-2012 11:10:00','dd-mm-yyyy hh24:mi:ss') - to_date('14-06-2012 11:00:00','dd-mm-yyyy hh24:mi:ss'))*60*60 as
result from dual
RESULT
----------
25
i want the output as 10 minutes.
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Jul 20, 2012
In one of my application oracle net connection is taking 30 to 40 ms(tnsping servicename),but in actual connection is always taking more than 45 ms, and my application requirement is below than 10 to 20 ms.
And can i use any other connection method like hostname, ezconnect etc.
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Jan 18, 2013
I am working with a new client and am still waiting on access to systems so I'm a bit hampered in looking at details of the database and environment. The database is OLTP and typical response time for returning result sets is under 2 seconds, often less than 1 second.
A simple SELECT on a few columns of v$session_longops (no subqueries, group by, having, etc) ran for more than 5 minutes.
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Oct 18, 2012
I want to ask whether I can create range partition of like 10 minutes? Like I have data of 1 hour and I want to make 10 partition?
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Oct 4, 2012
i want to convert minutes that is 90 want to convert it in hours and minute that format should come in 01:30 format.
can i get in this format?
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Jul 7, 2011
I need to take the certain logs on my 3-Node, 10gR2 RAC with ASM on Solaris 10.I have been asked to shutdown the database, nodeapps, listener, asm and crs and then restart crs. Below are t steps that I have prepared.
CODE
====Enable trace=========
ENABLE LEVEL 5 tracing-
./crsctl debug log crs allcomp:5
====Stop database, asm, listener, nodeapps finally crs===
1. STOP DATABASE
srvctl stop database -d DB_NAME
[code]....
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Sep 14, 2012
I have to make this script . It should be something like this :
starting of lsnrctl.......
startup mount;
alter database open read only;
recover managed .....................;
and a second script is to shut down everything correctly during Linux shutdown..I think it would be better to make a new Linux service . make a whole script? Oracle 11.2, Oracle Linux 5
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Jul 6, 2012
i am seeing (LGWR switch) happening in my databsae alert log every 3-4 minutes. is that appropriate? if not, what measure can i take to reduce this?
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Apr 9, 2013
I need the query to calculate minutes from difference of to number fields. Test case is as below.
DROP TABLE tmp;
CREATE TABLE tmp
(
code NUMBER(4),
stime NUMBER(4,2),
otime NUMBER(4,2)
)
LOGGING
NOCOMPRESS
NOCACHE
NOPARALLEL
NOMONITORING;
[code]......
CODE STIME OTIME
---------- ---------- ----------
1065 20 19.49
1082 20 18.57
1279 19.3 18.59
2075 19.3 15.32
Required output is
CODE STIME OTIME HR_MIN MINUTES
---------- ---------- ---------- ------------- --------
1065 20 19.49 00 HR 21 MIN 21
1082 20 18.57 01 HR 03 MIN 63
1279 19.3 18.59 00 HR 31 MIN 31
2075 19.3 15.32 03 HR 58 MIN 238
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Feb 11, 2011
I currently have a problem where I have two date fields with time stamps. The only bit i am currently interested in in these fields is the time factor. When i display them in their field they have a format of HH24:MI .
I have a start time and end time as well as a duration and duration type. What I am trying to do is the following: when the user inputs the start time, along with the duration say 1 for example and the duration type of say HRS for example I would like to have the end_datetime default to 1 HR from the current start time. This is the code I use on a when validate item trigger to acheive this:
case :blk.duration_type
when 'HRS' then
:blk.end_datetime := :blk.start_datetime + ((1/24)* :blk.duration);
when 'MINS' then
:blk.end_datetime := :blk.start_datetime + ((1/24/60)* :blk.duration);
However, every time it triggers the value put into end_datetime is 0:00 is it something to do with the datatypes im using .
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Jan 14, 2012
I have a field " Tran_date " with datatype Date . It contains date as well as time . How can I get the time . I tried with it as below :
SELECT TO_CHAR(TRAN_DATE,'DD-MON-YYYY HH24:MI:SS') FROM ABC
WHERE COMP=1 AND
BRANCH=1 AND
LOC_CODE='12' AND
TRAN_DATE='12-JAN-2012' ;
VALUE IS COMING LIKE THIS :
12-JAN-2012 00:00:00
ALTHOUGH THERE IS TIME . Its not zero .
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Jul 9, 2010
I have a query to add two numbers and get results in hours:minutes format.Example I want to add 12.20 and 6.15 and get result in hours and minutes like 18.35 (hours & minutes).if minutes that is after precision exceed more than 60 it should treat as 1 hour.like i want to add
12.35 (number 1) before precision its hour and after its minutes
06.25 (number 2)
04.25 (number 3)
-----
23.25 (23 hours and 25 minutes)
-----
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Mar 24, 2012
I want to find the hours and minutes between two char field data type.Example I have two char columns one is "start_time" and another one is "end_time".The start time and end time is the machine reading of CNC MACHINE in manufacturing.I want to develope the package to capture the actual machine running time.But I have the start and end time reading in character field.The machine reading format is hour:minutes:seconds only.It will looks like 1234:45:23(the machine ran 1234 hours and 45 minutes and 23 seconds).See the below table to understand my requirements.
start_time end_time result in hours & minutes
---------- -------- -------------------------
345 347 2 hrs
347 350 3 hrs
350 357.20 7 hrs and 20 minutes
If I subtract end_time - start_time I will get the result in char type only not in hours and minutes format.Another example
start_time end_time result in hours & minutes
---------- -------- -------------------------
357.21 360.40 3.19(If subtract end_time - start_time)
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Oct 5, 2012
Today i noticed one problem with my database,my redologs switches in every 3mins,i also noticed there is no more transaction changes happening in database but still redo switches.
Fri Oct 05 06:10:05 2012
Thread 1 advanced to log sequence 79244
Current log# 2 seq# 79244 mem# 0: D:ORADATAORACIREDO02.LOG
Fri Oct 05 06:12:16 2012
Thread 1 advanced to log sequence 79245
Current log# 1 seq# 79245 mem# 0: D:ORADATAORACIREDO01.LOG
Fri Oct 05 06:14:28 2012
[code]......
why redo switch happening,any internal problem causes redo to switch .
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Jan 4, 2011
I have installed Oracle 10g RAC crs and asm on CentOS release 5.4. When I am rebooting the nodes and starting crs manually All the services on both nodes starting successfully.
---------------------------------------------------------
[oracle@rac1 ~]$ crs_stat -t
Name Type Target State Host
------------------------------------------------------------
ora....SM1.asm application ONLINE ONLINE rac1
ora....C1.lsnr application ONLINE ONLINE rac1
ora.rac1.gsd application ONLINE ONLINE rac1
ora.rac1.ons application ONLINE ONLINE rac1
[code].....
But After a Few time/min few services goes down automatically and its show something like
---------------------------------------------------------
[root@rac1 ~]# crs_stat -t
Name Type Target State Host
------------------------------------------------------------
ora....SM1.asm application ONLINE ONLINE rac1
ora....C1.lsnr application ONLINE UNKNOWN rac1
ora.rac1.gsd application ONLINE ONLINE rac1
ora.rac1.ons application ONLINE ONLINE rac1
[code].....
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Jun 29, 2012
writing a script where there is a blocking lock for more than 30 minutes ?
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Nov 10, 2012
I have oracle 11g r2, I have a table emp, where i have three columns emp_no,status and creation_date, creation date is a time stamp like '02/09/2012 17:59:47'.
I have to trigger an email if the status is not updated for 30 minutes.
DECLARE
CUSROR C_GET_DATA IS
/*SELECTING RECORDS*/
SELECT * FROM EMP WHERE creation_date BETWEEN CREATION_DATE AND CREATION_dATE+30 AND STATUS IS NULL;
[Code]....
in the above code "CREATION_DATE AND CREATION_dATE+30" will give 30 days, how can i select just 30 minutes and schedule it every 30 minutes, so that email is triggered for if status is not updated for more than 30 minutes.
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Sep 28, 2011
SELECT emp.emp_id, emp.ename, TRUNC (attendancedatetime),
TRUNC ( ( 86400
* (MAX (attendancedatetime) - MIN (attendancedatetime))
)
/ 60
)
- 60
[Code]...
Following is the out put:
EMP_IDENAME Date Min Hrs
10013Javed Iqbal09/20/2011 00:00:0036.007.00
10013Javed Iqbal09/21/2011 00:00:0027.007.00
10013Javed Iqbal09/22/2011 00:00:0049.007.00
10013Javed Iqbal09/23/2011 00:00:000.000.00
10013Javed Iqbal09/24/2011 00:00:000.000.00
i need the TOtal sum of Minutes and Hrs e.g 7+7+7=21 and also minutes but if minutes total increase from 60 minutes then it should add to hrs .how to get sum.
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