How to find bind variables for specific sql?
As you know bind variables usage is very important for Oracle performance. If application or user do not use bind variables then Oracle start to create execution plan for same sql for different...
View ArticleORA-00600: internal error code, arguments: [kcidr_io_check_common_6]
I face with that problem on one of my customer’s database. They called me for database not running and can not be up. Customer Db version is 12c and its running on Windows Server. When I try to open...
View ArticleORACLE 19C ENTERPRISE MANAGER DATABASE EXPRESS NOT WORKING!!
One of my customer is running on Oracle 19c. They want to use OEM for can see database usage by OEM. Most of customers are use se Enterprise Manager Database Express for performance monitoring,...
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View ArticleOracle Database Appliance (ODA)…Hımmm. I should use it?
In one of our customer want to use new server for their database. We offer Oracle Database Appliance (ODA) is an engineered system which is designed by Oracle. But why customer should prefer this...
View ArticleRMAN-06820 ORA-17629 ORA-12154 During Backup of a Standby Database
One of our customer hit below message during backup of a Standby Database. Db version is 11.2.0.4 (yeah I know its old one) and linux version is OEL 7.8 Error messages are: RMAN-03090: Starting backup...
View ArticleExadata? What is new?
Exadata.. If you are dba than its not possible to don’t hear Exadata machine. It is a popular and powerful database platform developed by Oracle Corporation. It is a most popular Appliance for Oracle...
View ArticleInvestigating SQL performance? But how? What i should control or use?
Investigating SQL performance is very big topic in Oracle worlds. Many times we hit performance issue during daily control. Many of performance problems are related with bad coding, changed plan,...
View ArticleOracle Data Guard Vs Oracle Active Data Guard
Oracle Data Guard and Active Data Guard… Both are super cool solutions for high availability and disaster recovery solutions. However, they differ in terms of their capabilities and functionalities....
View ArticleHow to Stop / Drop Scheduled / Running jobs in Oracle
We create jobs and can schedule it by using DBMS_SCHEDULER package. We can also use this package for to stop or drop the job. There are two separate procedure(stop_job and drop_job) exists in the...
View ArticleHow to Delete Table, Index or Schema Statistics in Oracle Database
To delete table, index, or schema statistics in Oracle Database, you can use the following methods: Deleting Table Statistics:If you want to delete statistics for a specific table, you can use the...
View ArticleStatistic… Is it really so important for Oracle Database? If yes why it is so...
If you are DBA you already know the topic. By the way you may see many SQL code example which show how statistic is important for Oracle Cost-based Optimizer (CBO) in performance topic. As I said,...
View Article“ORA-28017: The password file is in the legacy format” Error during changing...
The error message “ORA-28017: The password file is in the legacy format” is related to Oracle database security. It indicates that the password file being used for authentication is in the older...
View Articlecompat-libstdc++33-3.2.3(X86_64) not able to install on RHEL 7.x
I tried to install compat-libstdc++33 for our 19c installation on Rhel 7 Linux operating system. But yum installer is reporting no package sucha as compat-libstdc++33. We can check current repo by...
View ArticleOracle vs PostgreSQL? Who is winner?
That question is asking me many times. Which database is better, what is performance difference, should i go with open source database. Oracle Database and PostgreSQL are both powerful relational...
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