I have to create/configure the environment for the database having high volume of the transactions nearly 10000 transactions per day and at peak time nearly 1500 transactions per second.
RAC can be one of the solution but that comes up with high cost. I googled for this type of environment configuration, what could be possible settings need to be configured for this environment configuration in both RAC and Non-RAC.
In an OLTP environment what cursor_sharing setting is preferred?Though typically we retain the original setting for most of the parameters except memory settings etc. I have queries in the following context
No. I am not facing any issue as of now (I am not supporting any Live environment) But I want to know the desgn considerations
First of all in OLTP environment (say one I am referring) we use pl/sql variables which are obviously bind variables Only in case where plan is expected to change we use hard coded values like 'CREDIT' or 'DEBIT' etc. for acc_type column
Again there can be 2 scenario
1) we use the same query for both acc_type values
2) we use 2 different queries
IF v_parameter = 'CR'
select * from accounts where acc_type='CREDIT'...
else
select * from accounts where acc_type='DEBIT'...
end if;
Again suppose the values are skewed and we gather stats with histograms hereIs't it the setting 'cursor_sharing=similar' which will be useful in above case?as with this setting optimizer will 'think' which plan to pick depending upon the values and bind variable peeking is taken care in option 2 above with IF ELSE clause?
BTW
I have carried several tests but not getting conclusive results For example I created following table with skewed data, created index and gather stats with histogram
SQL> select object_id,count(*) from skewed_data_tab group by object_id;
OBJECT_ID COUNT(*)
---------- ----------
5 30
6 2970
7 10797
8 150000
9 300000
SQL> create index i_skewed_tab_data on skewed_data_tab(object_id);
SQL> exec dbms_stats.gather_table_stats(user,'SKEWED_DATA_TAB',cascade=>true,
method_opt=>'for all columns size 254');
Then traced with following options
1) alter session set events '10046 trace name context forever, level 12';
SQL> begin
for i_outer in(select n from ids order by tstamp)
loop
for i_inner in (select /* for exact */ object_id,object_name,object_type
from skewed_data_tab where object_id=i_outer.n)
[code]...
2) set termout off
alter session set events '10046 trace name context forever, level 12';
@/u04/scripts/exact.sql 5
cat /u04/scripts/exact.sql
select /* for exact */ object_id,object_name,object_type from skewed_data_tab where object_id=&1;
But not getting consistent results
how can we see/set the environment variables through enterprise manager or through command prompt.
e.g (setting external procedure calls DDLs)etc.
After settig the proper environment whenever I issue startup upgrade at the SQL*Plus prompt i get the following error.
ORA-07217: sltln: environment variable cannot be evaluated.
I have 3 other databases on the same machine that I successfully upgraded without encoutering this error.
I'm trying to move my backup sets from windows database environment, to OEL 5.7 environment on another server.
I've found a manual [URL] by which I am trying to do it.I took backup sets from last night's backup using RMAN,and the current parameter(initSID.ora) file from the running live database.Now i need to configure control files in the pfile accordingly.
1. can i take current control files from the running system, to restore and recover backup sets from last night, to the state the database was at backup time?
2. how can i find out if control files are backed up and know by RMAN? "list backup completed after '2012-JUN-19';" >> gives me Archive redo logs, datafiles, but don't see the control files(or don't reconize them).
I have a table TEMP_TEST_1 to be loaded with multiple rows which contains the available items for a store with their sequence numbers. I also have another table TEMP_INV_1 which holds a column for inventory count of the items, and this column is to be updated after loading the first table TEMP_TEST_1.
The table TEMP_TEST_1 is updated through all possible channels in OLTP. So while updating the inventory, which is the best way. My update should either add the total number of inserts per item into the TEMP_TEST_1 table's INVENTORY_CNT column i.e. existing value + count of new rows OR a full update by taking the complete row count (Grouped by item id) and update the INVENTORY_CNT column
--------------------------------------------------------------------------------
-- Initial setup SQL's, TEMP_TEST_1 is updates on OLTP through multiple channels
--------------------------------------------------------------------------------
CREATE TABLE TEMP_TEST_1 ( ITEMID NUMBER ( 4 ),
INVENTORY_CNT NUMBER ( 2 ) );
CREATE TABLE TEMP_INV_1 ( ITEMID NUMBER ( 4 ),
ITEMSEQ NUMBER ( 5 ) );
INSERT INTO
[code].......
--------------------------------------------------------------------------------
-- Inserts for new items in the store
--------------------------------------------------------------------------------
INSERT INTO
TEMP_INV_1
VALUES
( 1,
11 );
INSERT INTO
TEMP_INV_1
[code].......
I am trying to enable OLTP compression on tables and at tablespace level for the tables
Steps I am following are:
1. Move indexes to its own tablespace
2. enable OLTP compression at table level:
alter table table_name move compress for OLTP
3. Rebuild indexes
4. Issue I have is what to do with tables with LOB columns
ALTER TABLE lob_table MOVE LOB (LOB_COL) STORE AS (TABLESPACE index_tbsp); -- Is this correct?
5. alter tablespace data_tablespace default compress for OLTP;
I have a question, is the sequence of steps correct. For tables with LOB columns do we needto move lobindex to index tablespace. Beacuse lobsegment and lobindex are created in data tablespace?
installing Oracle for a new Data-Center(still in planning).It will be an OLTP shop working 24/7, with 250 concurrent users.
1. Can it, in theory run with good performance on a quad processor(something like Intel Xeon Series 56XX) , with 32GB of memory?
2. What is the Oracle Database Edition required for this configuration?
3. What additional things should one take into account to plan the most cost-effective configuration?
Can a server (node) have more than one databases in RAC environment?
View 2 Replies View RelatedI exported oracle database from one server in a dmp file. then i imported it in another oracle database server. when i saw the imported data the columns which were storing german data is in rubbish characters.
then i remember that the database from where i exported is having nls language as german. i executed this statement to set the nls on the new server
alter system set nls_lang=german SCOPE=SPFILE
but now my database is not getting started always giving me error - cannot access NLS data files or invalid environment specified.
i also set the path NLS_LANG=german in the solaris environment.
i am using client-server environment without using a domain.On One computer i have installed Oracle 8.0.5 and developer 2000. and on client side i have installed form 6i. i have made a service (star) in Tnsnames.ora in client side.
star.world =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(PROtoCOL = TCP)
(Host = server)
(Port = 1521)
)
)
(connect_DATA = (SID = ORCL)
)
)
--------------------------------------------
it gives me error:
ORA-12203:TNS :unable to connect to destination
I am trying to generate dynamic control file, as the files I want to upload are coming from different source and their name is constantly changing but following a fix pattern and naming convention.
I am able to generate dynamic control file through SQL. But while calling from BATCH file, i am unable to sent the file name as parameter.
All the examples i have searched are for UNIX, how to do it with BATCH File in WINDOWS.
i'm a student currently learning database administration security.
I need to create a tablespace for administration of database but i don't know what datafile settings are best suited for admin usage.
I have attached the schema that was given to me for this assignment.
My manager is asking to create a SQL scrip, which will provide following information.
Our database is 9.2.0.7.0 on Windows 2000 Server
-How many records Insert / Update or Delete daily in my Oracle database?
- Check Archive log / Redo Log switching information?
-Check database growth ?
i am trying to install Oracle 10.10.2.0 on Windows Server 2003 standard x64 Edition Service Pack, but when i try to run the installer or open DVD it gives me below error.
"The image file D: is Valid, but is for a machine type other than the current machine."
I was trying to delete the database in the test server. When i was deleting listener was already stopped, i continued deleting using dbca, it shown me some alert that datafiles cant be deleted because system could't find database, since listner was stopped so only service was deleted(the one showing in the windows administrator toolsservicesOracleServiceTEST).
All the datafile parameter files are still there. How can i delete the datafiles and parameter files belongs to that database or how to create the deleted service, so that i will start the listener and do the complete deleting of the database.
I have to migrate production database version 10gR2 on windows 2003 server to oracle 11gR2 on windows 2008 server . So far i have just installed the oracle software on 64bit windows 2008 server. How to move the data or migrate from old server to new server .
View 22 Replies View Relatedafter a long time,(i never remember when was the last time i installed 9i)i was asked to install 9i.So, whether i install server or cilent i get this error <attachment>
after i ignore it and finished the installation,The server installation gets abruptly ended for the client i get TNS errors.
I am trying to find the unix process for one of my application in the database but I am unable to view the same. To simulate, I did the following.
1. My database runs on different server.
2. I invoked "sqlplus" from another unix box to login to the database.
3. I found that the process id (ps -ef |grep sqlplus).
4. When I execute the below mentioned query it does not display the process id that I am looking for. But the osuser, username, program and machine details are correct. How can I know the process details from the database?
SELECT SYS.GV_$SESSION.OSUSER, SYS.GV_$SESSION.USERNAME, SYS.GV_$PROCESS.SPID,
SYS.GV_$SESSION.MACHINE, SYS.GV_$SESSION.PROGRAM,
SYS.GV_$PROCESS.PROGRAM ,SYS.GV_$SESSION.SQL_ID
FROM
SYS.GV_$PROCESS, SYS.GV_$SESSION
WHERE
SYS.GV_$PROCESS.ADDR=SYS.GV_$SESSION.PADDR and SYS.GV_$SESSION.USERNAME='TEST'
and SYS.GV_$SESSION.MACHINE like '%hostname%'
While creating the index we are getting the error "ORA-00603: ORACLE server session terminated by fatal error".
We have the space in tablespaces and also in the file systesm.
I have database in single server. I already have ORACLE_SID=stagedb. So i want to create new sid and named as proddb.Is it possible have multiple db in single server? This server not running as RAC. It run as single only.
View 1 Replies View Relateddatabase administration , we are planning to use amazon cloud database , this database does not allow us to login to server machine , unfortunately amazon don't provide ssh to this machine , in general for doing any of adminstration task on the database will there be need to log into the machine ? we can always log in through toad or any other sql client but we cannot do ssh to server..general can this limitation effect administration ?
View 9 Replies View RelatedI want to install Oracle 11g R2 in windows 2008 64 bit server. How can I know whether my server is ready to install Oracle ie is all components are available in server or any patch is to be applied etc.
View 3 Replies View RelatedI'm trying to connect a oracle client application on the client machine to a remote oracle server on the server machine but i get a connection fail.
On the server machine I configured oracle server in the following way:
Installed oracle server. Created a database "DB_Test" with the database configuration assistant Created a LISTNER with the Oracle NET Manager with the following parameter:
Protocol: TCP/IP HOST: server pc hostname (ENZOVAIO) or server machine address ip (192.168.0.71) in the network lan Port Number: 1521 Created "dbtest" service with the Oracle NET Manager with with the following parameter:
Service Name: "dbtest" Protocol: TCP/IP HOST: server pc hostname (ENZOVAIO) or server machine address ip (192.168.0.71) in the network lan Port Number: 1521
All services on the server machine are running and I opened port number (1521) in the router. On the client machine I installed SQL PLUS and SQL Developer.
With SQL Plus as by the official documentation I have entered the following command:
CONNECT username/password@[//]host[:port][/service_name]. In my case is:
CONNECT SYSTEM/oracledb@//ENZOVAIO:1521/testdb.
With SQL Developer I have entered the same parameter.
But with both SQLPlus and SQL Developer the connection fails.
We a running oracle9i database and forms 6i application.
We have 4 gb ram size and sized the sga for 700mb pga for 400mb for past 4 months there is no problem.
Now from last week we encounter the server hang, and we do restart. How to check reason for hanging.what are all the check list to carried out.
we have oracle server. we have to connect 500+ client machine to oracle server.
is it i need to install client version to all 500+ or any other shortcut way?
We performed image copy of production Oracle server (OS and instances) to a backup server. After a few weeks, we try to restore a latest Oracle database backup from production server to backup server. As we know, Oracle instance must be unique on the network.
Even we log on to backup server and bring up the instance, I think that still point to production instance since all init file, TNSNAMES.ora and listener file are still same. If we restore the database, we will end up bring down the production instance and restore on top of productions. How to change instance name on backup server including TNSNAMES, sqlnet, listener files in order for us to restore Oracle database from production to backup server?
I recently installed Oracle 10g on my windows Xp laptop. It has become considerably slow since then. I want to start the database server only when I need it, and not every time I start my laptop. I looked around in OEM and did found a way.
View 5 Replies View RelatedI have installed oracle 11g Release 11.1.0.1 on windows server 2008.I access this server from a client machine running on winXP through SQL PLUS. I wanted to shutdown and start DB server from this client machine. Accordingly i issued shutdown immediate command from SQLPLUS.
Now when i tried to start the DB with "STARTUP NOMOUNT" command i received error 12514. I understand this error means that the listener received a request to establish connections to a database but since DB services are not up and running, hence the error. So my first question is how do I resolve this error.
Continuing further, i tried to re-connect to the database as sys, and i received another error ORA-01041. So, my second question is why did i receive this error and again how can i resolve it
may be you can point me to relevant reference in Oracle documentation) how can i start and stop oracle from a client machine using SQL interface in CLI mode and windows environment and avoid this error.
I am connected as System. It was the only user I set-up a password when installed the database on personal computer.
SQL> alter user sys identified by mypass007
2 /
User altered.
SQL> connect sys/mypass007
ERROR:
ORA-28009: connection as SYS should be as SYSDBA or SYSOPER
[code]...
SQL> conn sysoper/mypass007
ERROR:
ORA-01017: invalid username/password; logon denied