Oracle Database on Dual-Processor Servers

Hello All,
I am contemplating on transferring my two instances of oracle 10g rel1 rdbms to a dual processor server from a single processor one.
What advantages will I gain? Is it really worth it?
I will appreciage any ideas, suggestions, comments, etc.
Thank you and with warm regards

Hi Justin,
Thank you very much for your reply.
Acutally, the instances running on my database server our production and development databases. The server would still host the two instances. BTW, my server is a Linux box (RHEL ES 4.0) with 3GB RAM running an intel XEON 3.0Ghz CPU (HP-Compaq ML-350).
I have Grid Control installed in a Windows 2003 where I manage the two instances and when I monitor the databases, I always get alerts that the CPU and memory utlizations are very high, in the high 90s (%).
Last night, I was informed that our server room will be made as location of an additional database server that will host databases for HR,Procurement,Inventory and Logistics and we will be the DBA for that. User base would be around 40 simultaneus online users at a any given time plus or minus 5 users. Total possible users will be around 100. Operation is from 7am to 6 pm, weekdays.
For this server, we have proposed dual processor (intel XEON) and 4GB RAM. Would this be enough to meet our incoming requirements?
Thank you and regards,
Mike

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Hi,
Can anyone please explain me why query in timesten taking more time
than query in oracle database.
I am mentioning in detail what are my settings and what have I done
step by step.........
1.This is the table I created in Oracle datababase
(Oracle Database 10g Enterprise Edition Release 10.2.0.1.0)...
CREATE TABLE student (
id NUMBER(9) primary keY ,
first_name VARCHAR2(10),
last_name VARCHAR2(10)
2.THIS IS THE ANONYMOUS BLOCK I USE TO
POPULATE THE STUDENT TABLE(TOTAL 2599999 ROWS)...
declare
firstname varchar2(12);
lastname varchar2(12);
catt number(9);
begin
for cntr in 1..2599999 loop
firstname:=(cntr+8)||'f';
lastname:=(cntr+2)||'l';
if cntr like '%9999' then
dbms_output.put_line(cntr);
end if;
insert into student values(cntr,firstname, lastname);
end loop;
end;
3. MY DSN IS SET THE FOLLWING WAY..
DATA STORE PATH- G:\dipesh3repo\db
LOG DIRECTORY- G:\dipesh3repo\log
PERM DATA SIZE-1000
TEMP DATA SIZE-1000
MY TIMESTEN VERSION-
C:\Documents and Settings\dipesh>ttversion
TimesTen Release 7.0.3.0.0 (32 bit NT) (tt70_32:17000) 2007-09-19T16:04:16Z
Instance admin: dipesh
Instance home directory: G:\TimestTen\TT70_32
Daemon home directory: G:\TimestTen\TT70_32\srv\info
THEN I CONNECT TO THE TIMESTEN DATABASE
C:\Documents and Settings\dipesh> ttisql
command>connect "dsn=dipesh3;oraclepwd=tiger";
4. THEN I START THE AGENT
call ttCacheUidPwdSet('SCOTT','TIGER');
Command> CALL ttCacheStart();
5.THEN I CREATE THE READ ONLY CACHE GROUP AND LOAD IT
create readonly cache group rc_student autorefresh
interval 5 seconds from student
(id int not null primary key, first_name varchar2(10), last_name varchar2(10));
load cache group rc_student commit every 100 rows;
6.NOW I CAN ACCESS THE TABLES FROM TIMESTEN AND PERFORM THE QUERY
I SET THE TIMING..
command>TIMING 1;
consider this query now..
Command> select * from student where first_name='2155666f';
< 2155658, 2155666f, 2155660l >
1 row found.
Execution time (SQLExecute + Fetch Loop) = 0.668822 seconds.
another query-
Command> SELECT * FROM STUDENTS WHERE FIRST_NAME='2340009f';
2206: Table SCOTT.STUDENTS not found
Execution time (SQLPrepare) = 0.074964 seconds.
The command failed.
Command> SELECT * FROM STUDENT where first_name='2093434f';
< 2093426, 2093434f, 2093428l >
1 row found.
Execution time (SQLExecute + Fetch Loop) = 0.585897 seconds.
Command>
7.NOW I PERFORM THE SIMILAR QUERIES FROM SQLPLUS...
SQL> SELECT * FROM STUDENT WHERE FIRST_NAME='1498671f';
ID FIRST_NAME LAST_NAME
1498663 1498671f 1498665l
Elapsed: 00:00:00.15
Can anyone please explain me why query in timesten taking more time
that query in oracle database.
Message was edited by: Dipesh Majumdar
user542575
Message was edited by:
user542575

TimesTen
Hardware: Windows Server 2003 R2 Enterprise x64; 8 x Dual-core AMD 8216 2.41GHz processors; 32 GB RAM
Version: 7.0.4.0.0 64 bit
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MV_US_DATAMART
ORDER_DATE               DATE,
IF_SYSTEM               VARCHAR2(32) NOT NULL,
GROUPING_ID                TT_BIGINT,
TIME_DIM_ID               TT_INTEGER NOT NULL,
BUSINESS_DIM_ID          TT_INTEGER NOT NULL,
ACCOUNT_DIM_ID               TT_INTEGER NOT NULL,
ORDERTYPE_DIM_ID          TT_INTEGER NOT NULL,
INSTR_DIM_ID               TT_INTEGER NOT NULL,
EXECUTION_DIM_ID          TT_INTEGER NOT NULL,
EXEC_EXCHANGE_DIM_ID TT_INTEGER NOT NULL,
NO_ORDERS               TT_BIGINT,
FILLED_QUANTITY          TT_BIGINT,
CNT_FILLED_QUANTITY          TT_BIGINT,
QUANTITY               TT_BIGINT,
CNT_QUANTITY               TT_BIGINT,
COMMISSION               BINARY_FLOAT,
CNT_COMMISSION               TT_BIGINT,
FILLS_NUMBER               TT_BIGINT,
CNT_FILLS_NUMBER          TT_BIGINT,
AGGRESSIVE_FILLS          TT_BIGINT,
CNT_AGGRESSIVE_FILLS          TT_BIGINT,
NOTIONAL               BINARY_FLOAT,
CNT_NOTIONAL               TT_BIGINT,
TOTAL_PRICE               BINARY_FLOAT,
CNT_TOTAL_PRICE          TT_BIGINT,
CANCELLED_ORDERS_COUNT          TT_BIGINT,
CNT_CANCELLED_ORDERS_COUNT     TT_BIGINT,
ROUTED_ORDERS_NO          TT_BIGINT,
CNT_ROUTED_ORDERS_NO          TT_BIGINT,
ROUTED_LIQUIDITY_QTY          TT_BIGINT,
CNT_ROUTED_LIQUIDITY_QTY     TT_BIGINT,
REMOVED_LIQUIDITY_QTY          TT_BIGINT,
CNT_REMOVED_LIQUIDITY_QTY     TT_BIGINT,
ADDED_LIQUIDITY_QTY          TT_BIGINT,
CNT_ADDED_LIQUIDITY_QTY     TT_BIGINT,
AGENT_CHARGES               BINARY_FLOAT,
CNT_AGENT_CHARGES          TT_BIGINT,
CLEARING_CHARGES          BINARY_FLOAT,
CNT_CLEARING_CHARGES          TT_BIGINT,
EXECUTION_CHARGES          BINARY_FLOAT,
CNT_EXECUTION_CHARGES          TT_BIGINT,
TRANSACTION_CHARGES          BINARY_FLOAT,
CNT_TRANSACTION_CHARGES     TT_BIGINT,
ORDER_MANAGEMENT          BINARY_FLOAT,
CNT_ORDER_MANAGEMENT          TT_BIGINT,
SETTLEMENT_CHARGES          BINARY_FLOAT,
CNT_SETTLEMENT_CHARGES          TT_BIGINT,
RECOVERED_AGENT          BINARY_FLOAT,
CNT_RECOVERED_AGENT          TT_BIGINT,
RECOVERED_CLEARING          BINARY_FLOAT,
CNT_RECOVERED_CLEARING          TT_BIGINT,
RECOVERED_EXECUTION          BINARY_FLOAT,
CNT_RECOVERED_EXECUTION     TT_BIGINT,
RECOVERED_TRANSACTION          BINARY_FLOAT,
CNT_RECOVERED_TRANSACTION     TT_BIGINT,
RECOVERED_ORD_MGT          BINARY_FLOAT,
CNT_RECOVERED_ORD_MGT          TT_BIGINT,
RECOVERED_SETTLEMENT          BINARY_FLOAT,
CNT_RECOVERED_SETTLEMENT     TT_BIGINT,
CLIENT_AGENT               BINARY_FLOAT,
CNT_CLIENT_AGENT          TT_BIGINT,
CLIENT_ORDER_MGT          BINARY_FLOAT,
CNT_CLIENT_ORDER_MGT          TT_BIGINT,
CLIENT_EXEC               BINARY_FLOAT,
CNT_CLIENT_EXEC          TT_BIGINT,
CLIENT_TRANS               BINARY_FLOAT,
CNT_CLIENT_TRANS          TT_BIGINT,
CLIENT_CLEARING          BINARY_FLOAT,
CNT_CLIENT_CLEARING          TT_BIGINT,
CLIENT_SETTLE               BINARY_FLOAT,
CNT_CLIENT_SETTLE          TT_BIGINT,
CHARGEABLE_TAXES          BINARY_FLOAT,
CNT_CHARGEABLE_TAXES          TT_BIGINT,
VENDOR_CHARGE               BINARY_FLOAT,
CNT_VENDOR_CHARGE          TT_BIGINT,
ROUTING_CHARGES          BINARY_FLOAT,
CNT_ROUTING_CHARGES          TT_BIGINT,
RECOVERED_ROUTING          BINARY_FLOAT,
CNT_RECOVERED_ROUTING          TT_BIGINT,
CLIENT_ROUTING               BINARY_FLOAT,
CNT_CLIENT_ROUTING          TT_BIGINT,
TICKET_CHARGES               BINARY_FLOAT,
CNT_TICKET_CHARGES          TT_BIGINT,
RECOVERED_TICKET_CHARGES     BINARY_FLOAT,
CNT_RECOVERED_TICKET_CHARGES     TT_BIGINT,
PRIMARY KEY(ORDER_DATE, TIME_DIM_ID, BUSINESS_DIM_ID, ACCOUNT_DIM_ID, ORDERTYPE_DIM_ID, INSTR_DIM_ID, EXECUTION_DIM_ID,EXEC_EXCHANGE_DIM_ID),
READONLY);
No of rows: 2228558
Config:
< CkptFrequency, 600 >
< CkptLogVolume, 0 >
< CkptRate, 0 >
< ConnectionCharacterSet, US7ASCII >
< ConnectionName, tt_us_dma >
< Connections, 64 >
< DataBaseCharacterSet, AL32UTF8 >
< DataStore, e:\andrew\datacache\usDMA >
< DurableCommits, 0 >
< GroupRestrict, <NULL> >
< LockLevel, 0 >
< LockWait, 10 >
< LogBuffSize, 65536 >
< LogDir, e:\andrew\datacache\ >
< LogFileSize, 64 >
< LogFlushMethod, 1 >
< LogPurge, 0 >
< Logging, 1 >
< MemoryLock, 0 >
< NLS_LENGTH_SEMANTICS, BYTE >
< NLS_NCHAR_CONV_EXCP, 0 >
< NLS_SORT, BINARY >
< OracleID, NYCATP1 >
< PassThrough, 0 >
< PermSize, 4000 >
< PermWarnThreshold, 90 >
< PrivateCommands, 0 >
< Preallocate, 0 >
< QueryThreshold, 0 >
< RACCallback, 0 >
< SQLQueryTimeout, 0 >
< TempSize, 514 >
< TempWarnThreshold, 90 >
< Temporary, 1 >
< TransparentLoad, 0 >
< TypeMode, 0 >
< UID, OS_OWNER >
ORACLE:
Hardware: Sunos 5.10; 24x1.8Ghz (unsure of type); 82 GB RAM
Version 10g Enterprise Edition Release 10.2.0.3.0 - 64bit Production
Schema:
CREATE MATERIALIZED VIEW OS_OWNER.MV_US_DATAMART
TABLESPACE TS_OS
PARTITION BY RANGE (ORDER_DATE)
PARTITION MV_US_DATAMART_MINVAL VALUES LESS THAN (TO_DATE(' 2007-11-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN'))
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TABLESPACE TS_OS,
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TABLESPACE TS_OS,
PARTITION MV_US_DATAMART_07_DEC_D1 VALUES LESS THAN (TO_DATE(' 2007-12-11 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN'))
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NOCOMPRESS
TABLESPACE TS_OS,
PARTITION MV_US_DATAMART_MAXVAL VALUES LESS THAN (MAXVALUE)
LOGGING
NOCOMPRESS
TABLESPACE TS_OS
NOCACHE
NOCOMPRESS
NOPARALLEL
BUILD DEFERRED
USING INDEX
TABLESPACE TS_OS_INDEX
REFRESH FAST ON DEMAND
WITH PRIMARY KEY
ENABLE QUERY REWRITE
AS
SELECT order_date, if_system,
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if_system,
business_dim_id,
time_dim_id,
account_dim_id,
ordertype_dim_id,
instr_dim_id,
execution_dim_id,
exec_exchange_dim_id
) GROUPING_ID,
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time_dim_id, business_dim_id, account_dim_id, ordertype_dim_id,
instr_dim_id, execution_dim_id, exec_exchange_dim_id,
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SUM (filled_quantity) filled_quantity,
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COUNT (quantity) cnt_quantity, SUM (commission) commission,
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COUNT (fx_rate * filled_quantity * average_price) cnt_notional,
SUM (fx_rate * fills_number * average_price) total_price,
COUNT (fx_rate * fills_number * average_price) cnt_total_price,
SUM (CASE
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ELSE 0
END) cancelled_orders_count,
COUNT (CASE
WHEN order_status = 'C'
THEN 1
ELSE 0
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SUM (recovered_transaction) recovered_transaction,
COUNT (recovered_transaction) cnt_recovered_transaction,
SUM (recovered_ord_mgt) recovered_ord_mgt,
COUNT (recovered_ord_mgt) cnt_recovered_ord_mgt,
SUM (recovered_settlement) recovered_settlement,
COUNT (recovered_settlement) cnt_recovered_settlement,
SUM (client_agent) client_agent,
COUNT (client_agent) cnt_client_agent,
SUM (client_order_mgt) client_order_mgt,
COUNT (client_order_mgt) cnt_client_order_mgt,
SUM (client_exec) client_exec, COUNT (client_exec) cnt_client_exec,
SUM (client_trans) client_trans,
COUNT (client_trans) cnt_client_trans,
SUM (client_clearing) client_clearing,
COUNT (client_clearing) cnt_client_clearing,
SUM (client_settle) client_settle,
COUNT (client_settle) cnt_client_settle,
SUM (chargeable_taxes) chargeable_taxes,
COUNT (chargeable_taxes) cnt_chargeable_taxes,
SUM (vendor_charge) vendor_charge,
COUNT (vendor_charge) cnt_vendor_charge,
SUM (routing_charges) routing_charges,
COUNT (routing_charges) cnt_routing_charges,
SUM (recovered_routing) recovered_routing,
COUNT (recovered_routing) cnt_recovered_routing,
SUM (client_routing) client_routing,
COUNT (client_routing) cnt_client_routing,
SUM (ticket_charges) ticket_charges,
COUNT (ticket_charges) cnt_ticket_charges,
SUM (recovered_ticket_charges) recovered_ticket_charges,
COUNT (recovered_ticket_charges) cnt_recovered_ticket_charges
FROM us_datamart_raw
GROUP BY order_date,
if_system,
business_dim_id,
time_dim_id,
account_dim_id,
ordertype_dim_id,
instr_dim_id,
execution_dim_id,
exec_exchange_dim_id;
-- Note: Index I_SNAP$_MV_US_DATAMART will be created automatically
-- by Oracle with the associated materialized view.
CREATE UNIQUE INDEX OS_OWNER.MV_US_DATAMART_UDX ON OS_OWNER.MV_US_DATAMART
(ORDER_DATE, TIME_DIM_ID, BUSINESS_DIM_ID, ACCOUNT_DIM_ID, ORDERTYPE_DIM_ID,
INSTR_DIM_ID, EXECUTION_DIM_ID, EXEC_EXCHANGE_DIM_ID)
NOLOGGING
NOPARALLEL
COMPRESS 7;
No of rows: 2228558
The query (taken Mondrian) I run against each of them is:
select sum("MV_US_DATAMART"."NOTIONAL") as "m0"
--, sum("MV_US_DATAMART"."FILLED_QUANTITY") as "m1"
--, sum("MV_US_DATAMART"."AGENT_CHARGES") as "m2"
--, sum("MV_US_DATAMART"."CLEARING_CHARGES") as "m3"
--, sum("MV_US_DATAMART"."EXECUTION_CHARGES") as "m4"
--, sum("MV_US_DATAMART"."TRANSACTION_CHARGES") as "m5"
--, sum("MV_US_DATAMART"."ROUTING_CHARGES") as "m6"
--, sum("MV_US_DATAMART"."ORDER_MANAGEMENT") as "m7"
--, sum("MV_US_DATAMART"."SETTLEMENT_CHARGES") as "m8"
--, sum("MV_US_DATAMART"."COMMISSION") as "m9"
--, sum("MV_US_DATAMART"."RECOVERED_AGENT") as "m10"
--, sum("MV_US_DATAMART"."RECOVERED_CLEARING") as "m11"
--,sum("MV_US_DATAMART"."RECOVERED_EXECUTION") as "m12"
--,sum("MV_US_DATAMART"."RECOVERED_TRANSACTION") as "m13"
--, sum("MV_US_DATAMART"."RECOVERED_ROUTING") as "m14"
--, sum("MV_US_DATAMART"."RECOVERED_ORD_MGT") as "m15"
--, sum("MV_US_DATAMART"."RECOVERED_SETTLEMENT") as "m16"
--, sum("MV_US_DATAMART"."RECOVERED_TICKET_CHARGES") as "m17"
--,sum("MV_US_DATAMART"."TICKET_CHARGES") as "m18"
--, sum("MV_US_DATAMART"."VENDOR_CHARGE") as "m19"
          from "OS_OWNER"."MV_US_DATAMART" "MV_US_DATAMART"
where I uncomment a column at a time and rerun. I improved the TimesTen results since my first post, by retyping the NUMBER columns to BINARY_FLOAT. The results I got were:
No Columns     ORACLE     TimesTen
1     1.05     0.94
2     1.07     1.47
3     2.04     1.8
4     2.06     2.08
5     2.09     2.4
6     3.01     2.67
7     4.02     3.06
8     4.03     3.37
9     4.04     3.62
10     4.06     4.02
11     4.08     4.31
12     4.09     4.61
13     5.01     4.76
14     5.02     5.06
15     5.04     5.25
16     5.05     5.48
17     5.08     5.84
18     6     6.21
19     6.02     6.34
20     6.04     6.75

Server Sizing For Oracle Database

Hi All,
I need a server sizing for the below mentioned architecture:
This application is basically for logistics company which we are planing to host it centrally with two server's one server for application and one for oracle database along with DR site (Other Location). There are four locations and each location will have 20 users who are going to access this application (20 x 4= 80 Users). We are using MPLS network of 35 mbps bandwidth.
1. Application server: Windows server 2008 R2
2. Database Server: Windows server 2008 R2, Oracle 11g r2
I need a server sizing documents.
Thanks........

EdStevens wrote:
Justin Mungal wrote:
EdStevens wrote:
user1970505 wrote:
Hi All,
I need a server sizing for the below mentioned architecture:
This application is basically for logistics company which we are planing to host it centrally with two server's one server for application and one for oracle database along with DR site (Other Location). There are four locations and each location will have 20 users who are going to access this application (20 x 4= 80 Users). We are using MPLS network of 35 mbps bandwidth.
1. Application server: Windows server 2008 R2
2. Database Server: Windows server 2008 R2, Oracle 11g r2
I need a server sizing documents.
Thanks........I'd seriously reconsider hosting Oracle db on Windows. Obviously there are many, many shops that do. And obviously it is often a case of the fact that they do not have (and choose to not acquire) expertise in Linux. But I've been in IT for 30+ years and have worked on IBM S-370 and its variants and descendents, Windows since v3, DEC VMS, IBM OS/2, Solaris, AIX, HPUX, and Oracle Linux. The first Oracle database I ever created was on Windows 3.11 and at that point I had never seen *nix. Now I am in a position to state that Windows is the worst excuse of an operating system of any I have ever used. I am constantly amazed/amused by how often (at least once a month on schedule, plus unplanned times) that our Windows SA has to send out a notice that he is re-booting his servers. I can't remember the last time we had to reboot a Linux server ( I have 4 of them)
Yes, I'm biased away from Windows, but that bias comes from experience. Hardly a day goes by that I don't see something that causes me to say to whoever is in earshot "have I told you how much I hate Windows?"I was going to refrain from commenting on that, as I assumed they're a Windows shop and aren't open to any other OS (but my assumption could be incorrect).
I haven't been working in IT for as long as many of the folks around here, only about 10 years. I'm a former system admin that maintained both Linux and Windows servers, but my focus was on Windows. In the right hands, Windows can be rock solid. If a system admin has to reboot Windows servers often, he is most likely doing something wrong, or is rebooting for security updates. It's never as simple as "Windows Sucks," or "Linux Sucks;" it all depends on who's running the system (again, in my opinion).
I have seen some windows servers run uninterrupted for so long no one could remember the admin password. But more often memory leaks and the "weekly update" (replacing last weeks bugs with this weeks) is the culprit.
Yes, it really is sad how often you have to reboot for updates if you want to keep your system current. Mind you, it's better to have the fixes then to not have them (maybe). I rebooted my servers about once every month at my old place... which is not that bad.
With that said, in my experience, Oracle on Windows is a major pain. It takes me much longer to do anything. Once you get proficient with a CLI like the bash shell, the Windows GUI can't compare.Agreed. One of my many complaints about Windows is the poor excuse of a shell processor. I'm pretty proficient in command line scripting, but still cringe when I have to do it. Practically every line of code I write for a command script is accompanied by the remark "this is so lame compared to what I could do with a shell script". Same for vi vs. notepad. But my real problem is the memory leaks and the registry. I'm fairly comfortable hacking certain areas of the registry, but the need to and the arcane linkages between different areas of the registry and how they influence 'process environment' remains a mystery to all but a tiny minority of admins. Compare to *nix where everything is well documented and "knowable".
One (of many) anecdotal experiences, this with my personal Win7 laptop. One time it crashed and refused to reboot. A bit of a google search turned up some arcane keystroke sequence to put it into some sort of recovery mode on bootup .. similar to getting into the bios, but the keystroke sequence was much more complex .. it may have involved standing on one foot while entering the sequence. Anyway, it entered a recovery process I've never seen before or since and repaired everything. My first thought was "hey, that was pretty cool." Then my second thought was 'but only Windows would need such a facility.
Bottom line? To paraphrase a famous Tom Hanks character, "My momma always said Windows was like a box of chocolates. You never know just what you'll get."Haha... I like that one. Yes, the registry is definitely horrible. It's amazing to me that a single point of failure was Microsoft's answer to INI files.
I think Windows and nix have their places. Server work definitely seems more productive to me in a nix environment, but I think I'd jump off a cliff if I had to use it as my desktop environment day-in-day-out. The other problem is application lock-down; I can't blame the OS for that, but it's a reality... and using virtualization to run those applications seems to defeat the point to me.

Oracle using 99% of processor, ORA-00020

We have an Oracle database serving data to a php application at a customer location running under
Apache.
Apache and php are on one MSW2k box, Oracle on a second. All is behind a firewall, also
MSW2k.
Every now and then (one to three months), the site slows to a crawl. The logs show us the
dreaded ORA-00020 error.
Unfortunately, the customer can't wait for us to go analyze things, so they re-boot Oracle.
(We are working on ways to get access to the logs.) So we set the same app up locally,
and let it run. We have all the services combined on one box here.
Every now and then (after a few weeks or a month) the test server cuts loose, and Oracle
hits 99% of processor utilization in the Task Manager. We don't hear the sound of thrashing
swap space on the hard disk, but everything slows down a bit. The site still runs, but at 56K
modem speeds on an ethernet LAN. We do not get the ORA-00020 error here, however.
(The test box is a wimp, a 267MHz 128MB Pentium with about 12GB Hard disk, 3 1/2G on the
boot partition.)
Today, I noticed that the server had six php processes that we could not kill. We tried to shut
down Apache and Oracle, but still couldn't kill the zombie php processes.
I've asked around elsewhere, and the common consensus is that we can probably tune the
process limit and maybe some other stuff, but that there is no reason to be surprised at having
to re-boot Oracle from time to time. (Not to mention MSWindows.)
It would be nice to have some pointers where to look, but if Oracle just has this habit, that
would also be nice to be able to confirm.

Thanks for the response, Justin. I have a few questions --
I've never heard anyone advise that a production Oracle server be rebooted periodically as a preventative measure.
Other than installing patchsets or the occasional change to the init.ora file, I can't think of a reason to take an
Oracle server down.Under what OS?
And I don't want to sound like I'm doubting you, but is this experience or theory?
(In other words, if you're claiming experience, it becomes easier to chalk the other guys's claims up to bad
programming practice or to using buggy apps. But then it becomes more necessary to assume that our
program is doing something like leaving connections open somewhere.)I've dealt with Oracle databases on HP-UX, Windows, and Solaris. Most of the production servers have been HP-UX or Solaris, though. I know that our current production database (HP-UX) doesn't go down other than to install a new patchset or to roll out a major new version of the application (the latter isn't strictly necessary, it's more for our sanity so we can test that everything works before letting customers bang on the database).
The fact that you had 6 non-killable php processes concerns me. Me too. That's one of the things I'm trying to check on. Wish I could have thrown them into a debugger and
done a stack trace on them before we re-booted the durn thing. Or even forced a core dump. I don't have
enough experience with MSWindows to know how to try to grab a process and see where it came from and
what it's doing.
If the PHP server/ plug-in (I'm not particularly
familiar with PHP) is leaving zombie processes around, that could eventually generate an ORA-00020, assuming
the processes still are attached to the server. I would address this question to a PHP forum somewhere-- I'm not
sure whether it's standard practise there to reboot the web server/ PHP process or whether there's a way to
eliminate these processes.If it were *NIX, I could log on as root and use extreme prejudice. There's something to plug into google -- killing php
processes on MSWindows.Is there a reason that you can't try deploying Apache & PHP on a linux box? Sounds like you're more of a Unix guy, and Apache & PHP were basically developed on Linux. It's possible that there are some bugs in the Windows ports that weren't there in the Linux versions.
When the Oracle server is at 99% CPU and not thrashing disk, are you sure that it's not doing something? Certain
complex queries, for example, could easily put the CPU to 99% for a while, particularly on such a puny box.Well, this one had been pegged at 99% solid for eight days when we finally took it down, including over a six-day
weekend, when there definitely was no one around to be running tests or anything. When this happens, did you take a look at the SQL that the database thought it was executing?
The idea behind using the puny
box was the hope that it would be easier to force our app to do whatever it's doing on location, but we may be
shooting ourselves in the foot with a box that simply misbehaves for other reasons before it can duplicate the bug
we're trying to squash.Was the O/S re-installed on this box before you set up your application? I know that when I get a puny box at work, it's usually been through a dozen hands recently and is pretty, well, crufty.
I've read of things like the listener leaving zombies as the result of DOS attacks, and that's something else
we'll have to check.That's definitely something to look at-- I haven't heard of that before, but it sounds plausible.
Justin

Oracle Database 10g R2 on Solaris 10

Dear all.
Next week I'll have a job which is to install Oracle Database 10g and configure it on Solaris 10 Operating System. I'd like to know if some of you could give some suggestions or best practices (SGA, PGA, Processes, etc.) for that installation. The hardware has 32Gb memory and 4 dual core processors. The O.S. is already prepared to receive Oracle installation.
Thanks a lot.

baskar.l wrote:
Steve,
Is that the below sentence meant that 10 connections from user A will be considered as one connection by oracle?
As far as oracle is concerned, 10 connections by user 'A' is the same as one connection each by users 'A' through 'J'thanks,
baskar.lNo. It means the load is the same. 10 connections is 10 connections, whether they are all by one user account or by 10 separate user accounts. It's still 10 separate connections and the load is the same and oracle doesn't care.
Try it for yourself. Set up 10 user accounts. Call them USER01 through USER10. Fire up 10 separate sqlplus sessions (you can do this from your windows desktop with 10 separate cmd windows) and log on with a different userid in each one. The query v$sessions. Then go back through your 10 sqlplus sessions and reconnect with the same user name in each - use USER01 in all 10 of the sessions. Then query v$sessions again.
Edited by: EdStevens on Oct 18, 2009 10:54 PM

Oracle Database on Dual-Processor Servers

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