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Oracle 12c Database download

03:47 AM By Bugra Canbakal Leave a Comment

At last oracle 12c database and grid infrastructure(linux versions) ready to download.

https://edelivery.oracle.com/

 

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[oracle@12c ~]$ sql
 
SQL*Plus: Release 12.1.0.1.0 Production on Wed Jun 26 23:05:30 2013
 
Copyright (c) 1982, 2013, Oracle.  All rights reserved.
 
 
Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production
With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options
 
SQL>

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Filed Under: Oracle Tagged With: 12c, 12c database, oracle

11.2.0.3 Auto archivelog deletion bug

08:45 AM By Bugra Canbakal Leave a Comment

1.PURPOSE AND SCOPE

Solving the Oracle 11.2.0.3 version auto archivelog deletion problem

2.PRACTICE

2.1. At Oracle 11.2.0.3 version there is a bug related with deleting archivelogs. Normally when FRA is need a space ,it need to check archivelogs which  can be deleted but because of the bug it doesn’t control which archivelogs can it be deleted ,you need to execute a dbms package to refresh the view. [Read more…]

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Filed Under: Oracle Tagged With: 11.2.0.3, archivelog bug, archivelog deletion.archivelog deletion bug, bug, oracle

Moving datafile local disk to ASM

11:36 AM By Bugra Canbakal 2 Comments

1.PURPOSE AND SCOPE

In some cases   we accidentally  forget and create datafiles on local disk while using.In this article i am going to explain how to move datafile local disk to ASM.

2.PRACTICE

2.1. I use 2 node RAC system for this practice. And create 2 tablespace on node 1 local disk.

[Read more…]

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Filed Under: Oracle, RAC - Real Application Cluster, Single Node Tagged With: asm, move local datafile to asm, oracle, rman

Installation of Oracle RMAN Catalog

07:52 AM By Bugra Canbakal 5 Comments

1.PURPOSE AND SCOPE

When using RMAN for taking backup, database records to backup informations to controlfile. Oracle suggest to use RMAN catalog option because of probability to losing controlfile.With help of RMAN catalog we can save rman informations at catalog database.Also it can use for saving rman scripts and information about rman backups.For to use this product we also need another database which act like a catalog database.

In this artichle i am going to explain how to install oracle RMAN catalog,how to register your database to catalog database and how to control backups.

[Read more…]

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Filed Under: Oracle, RMAN Tagged With: catalog, oracle, rman, rman catalog

RAC Impdp ORA-31693, ORA-29913, ORA-31640, ORA-19505, ORA-27037 fixing problems

06:42 AM By Bugra Canbakal 6 Comments

1.PURPOSE AND SCOPE

If  the dumpfile located on non-shared area and  dba try to start impdp operation with parallel on RAC servers (version 11gR2),dba would receive  ORA-31693, ORA-29913, ORA-31640, ORA-19505, ORA-27037 errors. The reason behind it oracle try to import using all RAC nodes for this operation and if the dumpfile is located on non-shared place , it could no reach it.

[Read more…]

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Filed Under: RAC - Real Application Cluster Tagged With: cluster=n, impdp, ORA-19505, ORA-27037, ORA-29913, ORA-31640, ORA-31693, oracle, parallel, rac

Virtual Indexes

10:51 AM By Bugra Canbakal 5 Comments

1.AMAÇ VE KAPSAM

Productıon olarak çalışan veritabanlarında querylere göre index oluşturup performans testleri yapmak oldukça riskli bir çalışmadır, bundan dolayı oracle bize virtual index özelliğini sağlamış. Bu özellik sayesinde index oluşturmadan querylerinizin performanslarını kontrol edebilirsiniz ve  bu esnada  uygulamadan gelen quer

[Read more…]

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Filed Under: Oracle Tagged With: index, oracle, virtual index

Oracle Table Redefinition

09:44 AM By Bugra Canbakal Leave a Comment

1.AMAÇ VE KAPSAM

Redefinition production ortamlarda veritabaninda kesinti yaratmadan tablo’nun storage parametrelerini degiştirmek,farkli bir tablespace taşimak veya yeni kolonlar eklemek,silmek ve degiştirmek için kullanilabilir.
Aşağıdaki çalışmamda bir tabloyu partition’li hale getirip 2009,2010,2011 yıllarına ayit partition’larını exadatanin özelliği olan “archive high” compress’liyecem,2012 yılının aylarınıda OLTP compress yapicam.Bu esnada veritabanı operasyonel olarak çalişmaya devam edicek.
Kisaca redefinition nasil çalıştığını anlatayım: yeni tablonuzu redefinitiona tanımladığınızda redef. bu tablonuzu materialized view çeviriyor ve datayı bu mv’un içine aktarıyor bu esnada orjinal tablonuzda da materialized view log olusturup tablonuza gelen insert,delete ve update işlemlerini kayit altina aliyor.

[Read more…]

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Filed Under: Oracle Tagged With: oracle, redefinition, table redefinition

Export alirken alinan EXP-00003 hatasınin çözümü

09:45 AM By Bugra Canbakal Leave a Comment

1.AMAÇ VE KAPSAM

Tablo ve Partitionlı tablolarda export alınırken alınan  EXP-00003: no storage definition found for segment(0, 0) hatasının çözümü.

2.UYGULAMA

2.1. Tablo ve partitionlı tablo üstünde exportu başlatıyoruz.

Oracle PL/SQL
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bash-3.2$ exp bcanbakal/bcanbakal TABLES=('BCANBAKAL.BIG_TABLE', 'BCANBAKAL.BIG_TABLE2:BIG_TABLE_2003') file=/home/oracle/big_table_exp.dmp log=/home/oracle/big_table_exp.log
Export: Release 11.2.0.1.0 - Production on Wed Jan 25 11:28:22 2012
 
Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.
Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, Oracle Label Security,
OLAP, Data Mining,
Export done in WE8MSWIN1252 character set and UTF8 NCHAR character set
server uses WE8ISO8859P9 character set (possible charset conversion)
About to export specified tables via Conventional Path ...
. . exporting table                      BIG_TABLE
EXP-00003: no storage definition found for segment(0, 0)

[Read more…]

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Filed Under: Oracle, Single Node Tagged With: EXP-00003, export, oracle

Oracle Exadata Certified Implementation Specialist

01:49 PM By Bugra Canbakal 2 Comments

Exadatayla haşır neşir olduğumu düşündükten sonra bugun Oracle Exadata Certified Implementation Specialist
sınavı başarılı bir şekilde verdim.

 

 

Sınava girecek arkadaşlara önerim “Exadata Performance Monitoring and Maintenance” ,”Exadata and I/O Resource Management” ,  “Database Machine Overview and Architecture”  ve HCC konularına ağırlık vermeleri.

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Filed Under: Oracle Tagged With: exadata, Exadata Certified Implementation Specialist, oracle

Data block corrupt kurtarma işlemi

06:52 AM By Bugra Canbakal 1 Comment

1.AMAÇ VE KAPSAM

Veritabanındaki corrupt blockları bir kaç yöntemle kurtarmamız/temizlememiz mümkündür. Corrupt duruma düşmesinin sebebi genellikle veritabanın çok büyümesi veya yapılan update işlemlerinden sonra başımıza gelmektedir.

2.UYGULAMA

2.1. Corruption hataları veritabanı alert loguna aşağıdaki gibi yansır, eğer çok fazla corruption varsa grep awk 2 lisini kullanıp ayırmanız rman scriptini oluşturmanıza yardım edecektir.
ORA-01578:
ORACLE data block corrupted (file # string, block # string)
Whenever we encounter above error message mean we have BLOCK CORRUPTION.

[Read more…]

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Filed Under: Oracle, RMAN Tagged With: analyze structure, block corrupted, blockrecover, data block corruption, data block corruption recover, dbverify, ora-01578, oracle, rman

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