How To Troubleshoot Package That Consumes All Available Memory

Sep 12, 2011

what I can do to troubleshoot an Oracle package that consumes all Available memory when it executes...The package is basically an ETL process - it reads data from an input table and reads data from the data warehouse for each row in the input to write to another table. The problem is reproducible and is dependent on the number of rows in the input table. The problem also appears to always stop at the same place when processing the input table.

Monitoring the Oracle process memory during execution shows the memory increase over time (usually an hour) before it maxes out and Oracle kills the process.

What should I look for in the package as far as the SQL statements to determine how to re-engineer the SQL to avoid this problem? I have attached the AWR report covering 1 hour when it ran.

 awr_report_101_102.html ( 229.09K )
Number of downloads: 2

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Server Administration :: Settings Infringe On Any Available Memory On System That Is Already Tight On Memory?

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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Jan 15, 2012

I have a package with several procedures which raise and catch an error if a foreign key constraint has been violated. I put the the following code in my package body:

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Jan 15, 2011

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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:
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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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Nov 16, 2012

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How it was calculated here ?

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Jun 12, 2013

we are using windows server 2008 R2 and oracle database version 11.2.0.2

Have two points here : I/O performance and Out of memory issue

1.) ADDM Report recommended solution is to stripe all data files for to reduce "Wait class "User I/O" was consuming" But I am not sure It will improve more I/O performance(it will resolved the issue) and same issue we are getting on many servers.

ADDM Report Snipped:

Findings and Recommendations
----------------------------
Finding 1: I/O Throughput
Impact is .28 active sessions, 44.97% of total activity.
--------------------------------------------------------

The throughput of the I/O subsystem was significantly lower than expected.

Recommendation 1: Host Configuration
Estimated benefit is .28 active sessions, 44.97% of total activity.

[code]....

2.) Same issue we got in another server and we increased memory thrice but again we got same below error. Now we are getting same below error another server.

Alert log Snipped:=

Wed Jun 12 07:12:15 2013
Process startup failed, error stack:
Errors in file E:\APP\ORACLE\diag\rdbms\oemgc\oemgc\trace\oemgc_psp0_3316.trc:
ORA-27300: OS system dependent operation:CreateThread failed with status: 8
ORA-27301: OS failure message: Not enough storage is available to process this command.
ORA-27302: failure occurred at: ssthrddcr

[code]....

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Mar 18, 2013

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Feb 5, 2013

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WARNING: Heavy swapping observed on system in last 5 mins.pct of memory swapped in [11.85%] pct of memory swapped out [3.45%]. make sure there is no memory pressure and the SGA and PGA are configured correctly. Look at DBRM trace file for more details.i also see the following in the alert.log:

Errors in file
/opt/oracle/diag/rdbms/iut3px1/iut3px1/trace/iut3px1_cjq0_55312404.trc:
ORA-00604: error occurred at recursive SQL level 2
ORA-04031: unable to allocate 3896 bytes of shared memory ("shared pool","select audit$,options from p...","sga heap(1,0)","kglsim object batch")

The file contents of iut3px1_cjq0_55312404.trc are:

====================
Process State Object
====================
----------------------------------------
SO: 0x70000007b97de70, type: 2, owner: 0x0, flag: INIT/-/-/0x00 if: 0x3 c: 0x3
proc=0x70000007b97de70, name=process, file=ksu.h LINE:12616 ID:, pg=0

[code]...

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OraOLEDB(0x80040E14)
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Specs are as follows:
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Oracle version:
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I am having trouble making my spfile parameters take effect and would like to set them manually. Disk reads are very slow, so I thought I would look at the db_cache_size in the spfile:
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Digging deeper, I noticed none of my <INSTANCE>.__ parameters match the values returned from 'show parameter'. Most of my concern is sga_target & pga_aggregate_target both being zero.

My memory targets:
memory_max_target big integer 49G
memory_target big integer 49G

I would like to increase the db_cache_size in an attempt to reduce the table scan time.

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May 13, 2013

When investigating memory usage on HP-UX V3 for my oracle database 11.2.0.3.4 which use AMM, it seems to me that system is not shifting shared SGA memory to private PGA memory when needed but it allocate other memory.The shared memory don't shrink all the memory_target id allocated. VSZ = RSZ

To test i have used this script which will allocate memory in process PGA.

create or replace package demo_pkg
   as
            type array is table of char(2000) index by binary_integer;
            g_data array;
end;

[code]...

I have done the same test on a linux machine (Red Hat Enterprise Linux Server release 6.3) and the size of the POSIX shared memory switched (/dev/shm) to the PGA like demonstrated by Tanel Poder in his blog [URL]...

Related conf :

lock_sga=FALSE
pre_page_sga=FALSE
pga_aggregate_target     0
sga_target     0
memory_target     5553258496
memory_max_target     5553258496

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Jan 25, 2011

i was unable to log in to oracle database. i am doing the following steps :

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ORA - 01034: oracle not available
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each command i give is showing the following error: ORA - 44412: XE edition memory parameter invalid or not specified.

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Sep 4, 2012

I have 3 questions.

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2) Also, I have read somewhere that changing the sga/memory parameters connecting to the database. is it true?

3) This is not concerned with above 2 questions. What should be the memory parameters size for a 8 gb database?

What I have is:

Total System Global Area 1068937216 bytes
Fixed Size 2182592 bytes
Variable Size 1027605056 bytes
Database Buffers 33554432 bytes
Redo Buffers 5595136 bytes

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I'm often accessing a small table which has 100 columns of type VARCHAR2(4000).

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Apr 4, 2008

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exec M_GET_FACILITIES_DETAILS.GET_AUTOFINANCE_HP_DETAILS('29-Feb-2008');

ORA-04030: out of process memory when trying to allocate 1052696 bytes (callheap,kllcqas:kllsltba)

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Sep 4, 2012

My database is working fine till y.day. But today when I try to connect as sysdba i get the following error- let me know how to resolve the same

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C:UsersAdministrator>sqlplus '/ as sysdba'
SQL*Plus: Release 11.2.0.1.0 Production on Tue Sep 4 05:11:14 2012
Copyright (c) 1982, 2010, Oracle. All rights reserved.
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Aug 27, 2013

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Nov 17, 2012

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here , this works well ..

TOP 10 PROCESSES CONSUMING MOST CPU

$ watch ps -e -o pcpu,pid,user,args |sort -k 1 -n -r | head -10

this is not working ... always i am getting following output

QUOTE x processes w/o controlling ttys t by tty
*********** output format ********** *********** long options ***********
-o,o user-defined -f full --Group --User --pid --cols --ppid
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-O,O preloaded -o v virtual memory --cumulative --format --deselect
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-F extra full X registers --heading --no-heading --context
********* misc options *********
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-m,m,-L,-T,H threads S children in sum -y change -l format
-M,Z security data c true command name -c scheduling class
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Mar 6, 2006

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Jun 10, 2013

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May 2, 2013

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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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