Ratio Between Global Memory Bound And Aggregate PGA Auto Target?
Aug 5, 2013
SQL> select name,decode(unit,'bytes',value/1024/1024,value) as mb from v$pgastat; NAME MB---------------------------------------------------------------- ----------aggregate PGA target parameter 25600aggregate PGA auto target 2724.14648global memory bound 1024total PGA inuse 22601.7333total PGA allocated 26653.6230maximum PGA allocated
[code]....
I understand I have soft limit( aggregate PGA target parameter) which was overlimited (maximum PGA allocated = 35374.4638) hence we have over allocation count>0.Extra bytes read/written=13GB,hence we have excessive 13Gb that we had to flush on disk(excessive I/O operations) cause of limitation in 1024MB(global memory bound)(it's not enough to join or to sort something so we must do onepassor multipass) ,which defines the size of single operation of sort or join(so does it mean that it's some kind of sort_area_size and hash_area_size for automatic workarea_size_policy? and in this case what about _smm_max_size?)aggregate PGA auto target - is the amount of space(total) that Oracle can give for work areas running in automatic mode.
So I can't understand ratio between global memory bound and aggregate PGA auto target - why does the aggregate PGA auto target such tiny?(relatively process count)?Is the global memory bound static for particular aggregate PGA target parameter?
I can change it only by redefining aggregate PGA target parameter?What would be with aggregate PGA auto target if I started 10 sort operation and each of them takes about 1Gb of memory.How huge it would be? 10Gb?
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Jan 15, 2011
I have a confusion with MEMORY_TARGET and MEMORY_MAX_TARGET parameter. if i set SGA_TARGET, SGA_MAX_SIZE along with MEMORY_TARGET and MEMORY_MAX_TARGET then how oracle will manage the memory? Because as per my understanding if we set MEM
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Aug 24, 2012
We are using the 11.1.0.7 database, we implemented the Memory_Max_Target and Memory_target in the database.Here is the value of the memory parameters:
SQL> show parameter memory_
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
hi_shared_memory_address integer 0
memory_max_target big integer 3G
memory_target big integer 2G
shared_memory_address integer 0
We want to increase the value of the Memory_target=3G, means, I want to increase the value of the memory_target upto Memory_max_target by using below command:alter system set MEMORY_TARGET=3G scope=both SID='OLTP1'; but I am getting below error:
ERROR at line 1:
ORA-02097: parameter cannot be modified because specified value is invalid
ORA-00846: could not shrink MEMORY_TARGET to specified value
I tried to give the memory_target value less than the memory_max_target value like:alter system set MEMORY_TARGET=2900M scope=both SID='OLTP1'; but get the same error:
ERROR at line 1:
ORA-02097: parameter cannot be modified because specified value is invalid
ORA-00846: could not shrink MEMORY_TARGET to specified value
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Aug 8, 2012
I am getting most of the time 'out of process memory' when i run the 'ord' procedure.here i am providing the tables and the procedure.
i have 2 table orders which holds distinct values, and departments table has ordvalue column holds long string of values for a particular record from orders table. for example if the values in orders table as follows:
ord_code ord_level ordid ordstatus ord_num user utimestamp
SR11 1 2 A 101 V SYSDATE
SR11 1 2 A 102 V SYSDATE
SR11 1 2 A 103 V SYSDATE
SR11 1 2 A 104 V SYSDATE
SR11 1 2 A 105 V SYSDATE
SR11 1 2 A 106 V SYSDATE
SR11 1 1 B 101 R SYSDATE
SR11 1 1 B 102 R SYSDATE
SR11 1 1 B 103 R SYSDATE
SR11 1 1 B 104 R SYSDATE
SR11 1 1 B 105 R SYSDATE
SR11 1 1 B 106 R SYSDATE
ETC...
AT TABLE departments data will be like this
ord_code ord_level ordid ordstatus ord_num user utimestamp
SR11 1 2 A 101,102,103,104,105,106 V sysdate
SR11 1 2 B 101,102,103,104,105,106 R sysdate
from the get_ord procedure the data aggreates using the xmlelement and gets as a long string value into departments table of ord_num column.
CREATE TABLE test.orders
(
ord_CODE VARCHAR2(4 BYTE) NOT NULL,
ord_LEVEL VARCHAR2(1 BYTE) NOT NULL,
ordID NUMBER(5) NOT NULL,
ordstatus VARCHAR2(1 BYTE) NOT NULL,
ord_num NUMBER(3) not null,
user VARCHAR2(8 BYTE),
UTIMESTAMP DATE
[code]...
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Jul 5, 2012
i am running 11.2.0.1 on HP-UX PA-RISC (64-bit). My Memory max target is defined as 34 GB and memory target is 32 GB on the database. The host has 256 GB physical memory. i see memory utlization is almost 90% used when seen from Grid Control on the host and wondering, what's going on? when i see into more details, i see the following 3 HP Processes consuming around 3.6 GB memory and rest very small is consumed by Oracle processes. Who's using the rest of the memory?
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Dec 29, 2012
I am aware that from 11g, memory_target is sufficient for memeory management between SGA and PGA.
what happens if MEMORY_TARGET set to non-zero and SGA_TARGET set to zero values in a 11g database? Does it enable automatic memory management within the SGA?
We regularly hit by ORA-4031 errors. Also, memory_target advisory (v$memory_target_advice) does not show any advisory information.
for eg:
memory_max_target = 500m
memory_target = 500m
and
sga_max_size=500m
sga_target=0
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Sep 4, 2012
I was new to Oracle. When i am Executing this Query, I was getting the error "ORA - 010008 - not all variables bound" .
VARIABLE sathya NUMBER
BEGIN
SELECT sal INTO :sathya FROM emp WHERE empno=7902;
END;
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Sep 14, 2011
,i had given the sample data below
create table ex (sno number,ename varchar2(10),job_code char(4),sal number);
insert into ex values(101,'John','Java',21000,'IT');
insert into ex values(102,'Michel','BI',25000,'IT');
insert into ex values(103,'Johny','Java',30000,'IT');
[code]...
My expected output is attached in a text file
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Jun 26, 2012
I have written follwoing code in form.
Declare
V_Empno Number:=51469;
Begin
Insert Into Emp(EmpNo,Ename)
[Code]....
When I run Above Code Then Error Is ORA-01008 Not all variables bound. Then I changed above code with following.
Declare
V_Empno Number:=51469;
Begin
[Code]....
Above code is working. but i am unable to understand why Dup_Val_On_Index is generating error ora-01008.
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Feb 4, 2013
I am running this query and getting this exception ORA-01008 All variables are not bound .
SELECT EQMT_INGT_LOG_ID, EQMT_ID,
XMLSerialize(DOCUMENT XMLType(ingLog.BUCK_SLIP_XML) AS CLOB) BUCK_SLIP_XML
FROM TOS_EQMT_INGT_LOG ingLog
where BUCK_SLIP_XML is not null and ingt_date between to_date(:fromDate, 'MM/DD/YYYY HH24:MI')
[code]...
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May 20, 2013
what will be best buffer cache hit ratio for a database for good performance
note : in general
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Mar 16, 2013
understand the metric Row Cache Hit Ratio in V$SYSMETRIC_HISTORY? Is it the dictionary cache hit ratio?
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Dec 16, 2010
I want to build a pl/sql script that mails some information to a college. When I run this script in a application that should run this script we get a error "ora-01008: not all variables bound by statement".
Below the syntax:
DECLARE
Cursor c_zaakid is
select postregnr from ovx_registrnr
where registratienr = (select registratienr from ovx_regi_verg
where internregnr =:AANV_REGISTRATIENR
and applicatiekode = 'BWT')
[code]....
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Mar 3, 2011
Database : 9.2.0.7
Os : windows 2003 sevrer standdard edition
RAM 4 Gigs
The buffer cache hit ratio in this server is around 83%, where it normaly was around 98% before i did some maintenance activities.
I have done some maintenance activities in January on this database.
Maintenance activties includes below steps
1.In production i have deleted old data in the production tables
2.Reorganized tablespaces,tables
3.Rebuild indexes for those tables.
4. At last collected statistics for those tables.
Now after this activity the buffer cache hit ratio is very low.
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Jul 29, 2012
We are getting Negative values of Library cache hit ratio in AWR Report of 11g(11.2.0.3) with Solaris[tm] OE (64-bit). Why it shows negative value.
Instance Efficiency Percentages (Target 100%)
Buffer Nowait %: 99.87 Redo NoWait %: 99.99
Buffer Hit %: 92.17 In-memory Sort %: 100.00
Library Hit %: -3,321.23 Soft Parse %: 81.95
Execute to Parse %: 92.88 Latch Hit %: 95.11
Parse CPU to Parse Elapsd %: 87.25 % Non-Parse CPU: 81.39
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Jul 25, 2012
I have the following setup
SQL> show parameter sga;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
lock_sga boolean FALSE
pre_page_sga boolean FALSE
sga_max_size big integer 3G
sga_target big integer 2G
from what I read I beleive this will initially grab 2GB of memory on startup and will grab up to to 3GB of memory total for the SGA. The "total" memory can be allocated to different peices of the SGA when needed but will never exceed 3GB. Is this correct or would these settings infringe on any available memory on a system that is already tight on memory?
Secondly, what happens if both these values are set to the same value?
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May 23, 2013
Can i know the internal process of initialization of DB into memory in timesten , when a new connection is establishing? Will timesten create tables and indexes in RAM when first connection is established if the RAM policy is default?
want to know the internal functional flow of timesten when any command is fired against it.
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Oct 9, 2009
I am binding parameters using obndra to Package. while executing with oexec it is giving error "ORA-01044: size 25600000 of buffer bound to variable exceeds maximum"
I am getting this error in Shared server only.In dedicated server it is working.
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Jul 13, 2010
I need to aggregate the data based the two dates criteria.
I have two tables
1. Table1
Number Date1 Date2
1 10-Jun-2010 30-Jun-2010
2 10-Feb-2010 30-Feb-2010
----------------------------------
2. Table2
Number Date Revenue
1 11-Jun-2010 100
1 09-Jun-2010 100
1 12-Jun-2010 100
2 11-Feb-2010 100
2 12-Feb-2010 100
2 13-Feb-2010 100
......................
......................
So on
Output:
Number Revenue Date2
1 200 30-Jun-2010
2 300 30-Feb-2010
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Oct 25, 2011
I have two table and I want to merge them
TERMS_TABLE
ID | TERMS
309 | 'hardware'
309 | 'software'
309 | 'computer'
TFIDF_TABLE
ID | TERMS
309 |'computer,phone,mp3....'
Now I want to add TERMS column of TERMS_TABLE to terms column of TFIDF_TABLE but If TFIDF_TABLE already contains TERMS of TERMS_TABLE then I should not insert this term to the NEW_TFIDF_TABLE , like that
result should be:
NEW_TFIDF_TABLE
ID | TERMS
309 |'computer,phone,mp3....,hardware,software'
How can I do that ?
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May 1, 2011
I have performance problem with 7 queries involving groupby clauses in OLAP database.These are queries triggered during siebel DAC run
kumar[size="4"][/size][color="#0000FF"][/color]kumardba
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Nov 7, 2012
I am trying to Show all Customers (custId, last name, first name) who bought cars at the Arctic AND Pacific branches and Order it by CustId.
These are the tables:
VIN CARTYP BRNAME BUYERID SALEDATE
------- ------ ---------- ---------- -----------
1JJ0001 CT9015 Arctic
1NN0001 CT9014 Arctic 10010 18-mar-2012
1PP0001 CT7013 Arctic 10007 25-sep-2012
1QQ0001 CT7012 Atlantic 10014 22-dec-2009
1RR0001 CT7011 College 10013 30-sep-2012
2JJ0001 CT9015 Pacific
2NX0001 CT9014 Pacific
2PP0001 CT7013 Arctic
2QQ0001 CT7012 Arctic
[Code]...
CUSTID LNAME FNAME BALANCE_DUE
---------- ------------ ------- -----------
10001 Disney Daisy 9000.5
10010 Dupont Caryn 40000
10006 Gordon Diane 75000.5
10005 Gordon Tracy 3000.25
10013 Gross Henry 50000
10015 Hilton Kate 40000
10011 Lea Diane 12000
10003 Lopez Athena
[Code]...
No matter how I write the query, I get the message that no rows have been selected.
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Dec 13, 2010
I have one table emp with columns id , name and dept. i want query to get the list like this........
ID name did
1 ajay 10,30,40,60
2 sree 10,30,70
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Nov 24, 2009
I have a query more or less like this:
SELECT field1,
COUNT(x) AS COUNT
FROM my_table
GROUP BY field1;
For field1 I want to get a count, but if field1 is like 'ABC%' then I want to combine all of those.
So if I have the following:
ABC1 | 5
ABC2 | 10
XYZ1 | 3
I want results like this:
ABC | 15
XYZ1 | 3
I've tried using some case statements like
SELECT CASE
WHEN field1 LIKE 'ABC%' THEN
'ABC'
ELSE
field1
END AS field1,
COUNT(x) AS COUNT
FROM my_table
GROUP BY CASE
WHEN field1 LIKE 'ABC%' THEN
'ABC'
ELSE
field1
END;
but this just gives me
ABC | 5
ABC | 10
XYZ1 | 3
How can I combine record 1 and 2 from the last record set example above?
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Apr 27, 2011
I have a table as below:
Year Month Value
2011 01 15
2011 02 26
2011 03 34
[code]...
The value is an aggregate Year to Date Figure And I was wondering what the best method of splitting this data out into a Monthly Figure so that it would look like below:
Year Month Mth Value
2011 01 15
2011 02 11
2011 03 8
2011 04 9
[code]...
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Oct 21, 2010
I intend to get for every client the start date and end of a contiguous range of days. Example for the same client have two records, in the first goes from day 1 to day 5 and the second from day 3 to day 9, i intend to get a record for this client where indicated that the start date is on day 1 and ending on Day 9.
SELECT 123 as CLI_ID, TO_DATE('20100101', 'YYYYMMDD') as DT_START, TO_DATE('20100105', 'YYYYMMDD') as DT_END FROM DUAL UNION
SELECT 123 as CLI_ID, TO_DATE('20100208', 'YYYYMMDD') as DT_START, TO_DATE('20100321', 'YYYYMMDD') as DT_END FROM DUAL UNION
SELECT 123 as CLI_ID, TO_DATE('20100219', 'YYYYMMDD') as DT_START, TO_DATE('20100228', 'YYYYMMDD') as DT_END FROM DUAL UNION
SELECT 123 as CLI_ID, TO_DATE('20100227', 'YYYYMMDD') as DT_START, TO_DATE('20100405', 'YYYYMMDD') as DT_END FROM DUAL UNION
SELECT 123 as CLI_ID, TO_DATE('20100901', 'YYYYMMDD') as DT_START, TO_DATE('20101013', 'YYYYMMDD') as DT_END FROM DUAL
Expected :
CLI_ID,DT_START,DT_END
123,01/01/2010,05/01/2010
123,08/02/2010,05/04/2010
123,01/09/2010,13/10/2010
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Mar 8, 2012
Do we have analytic function equivalent of following?
select object_type,owner from dba_objects group by object_type,owner ;
I am trying to get a unique srno for a combination of a 2 fields - here object_type and owner
OWNEROBJECT_TYPESRNO
SYSVIEW1
SYSTABLE2
SYSPROCEDURE3
SYSTEMVIEW4
SYSTEMTABLE5
SYSTEMFUNCTION6
SYSTEMPROCEDURE7
SCOTTTABLE8
SCOTTVIEW9
.......................
also how can I get the SRNO?
I can' use sequence in the group by function and if I get equivalent analytic for above group by even then I can't write row_number as the order by gives detail record
I don't want to wrap this select inside other select
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Jun 29, 2011
I'm calculating a Z score based on some simple numerical data thus:
create table t (id number, val number);
insert into t values(1, 1795);
insert into t values(2, 1753);
insert into t values(3, 1743);
insert into t values(4, 1876);
insert into t values(5, 1848);
[Code] .....
the logic is quite simple - calculate a moving average over the previous 12 rows, and a stdev over the same window. Then subtract the prior row's moving average from the current value, and divide by the prior row's stdev.
The issue is I want to expose this logic in a BI tool (OBI EE v10g), meaning I can't use the nested analytic functions. How to achieve this logic in a single analytic pass? The sql above took about 2 minutes to write this morning, then I've spent all day looking at user-defined aggregate functions, but haven't even been able to get the first step, the moving average, working. I can understand that I can probably create an udaf to replicate the avg(val) over (order by id ROWS BETWEEN 11 PRECEDING AND 0 FOLLOWING) functionality, but I can't see how to bundle the logic for the other three steps in the calculation into this.
From what I've read, the ODCIAggregateMerge should allow me to combine different threads that can return the different values I need for the current row calculation. Is this correct?
The only example udafs I can find are either not relevant (STRAGG) or very simple (ie don't appear to invoke multiple passes). I've also had a look at the COLLECT function, but again I can't see a way to use this.
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Feb 8, 2012
I'm trying to build up a materialized view with aggregate and FAST REFRESH for INSERT and UPDATE, DELETE with no success. But the web doesn't deny it ?
--build up needed schema objects
CREATE TABLE empt
( ename VARCHAR2(20),
empno INTEGER,
[Code]....
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Jul 1, 2011
i have table with following data.
yearquartersales Revenue
2004Q145678
2004Q287456
2004Q356732
2004Q4120986
2005Q12398
2005Q23900
2005Q36522
2005Q42763
I want the output in following way.tell me the select query for this
yearquarterSales Revenue
2004 Q145678
Q287456
Q356732
Q4120986
2004 total Sales310852
2005 Q12398
[code]....
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