Oracle 12c: Restrict OS authentication to a single pluggable database
In my last article, I have discussed about the process of implementing OS authentication in a multitenant Oracle 12c database without setting the deprecated parameter REMOTE_OS_AUTHENT. We have seen...
View Articlecatupgrd.sql and ORA-01722: invalid number
Recently while upgrading one of the database from Oracle version 11.2.0.3 to 11.2.0.4, the catupgrd.sql script failed with following errors...
View ArticleORA-22992, ORA-64202: When you treat CLOB as string
One of my client contacted me to solve a database problem. The problem they were facing was that they were trying to insert a record in the source database (CDB1_PDB_1) by fetching (SELECT) records...
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Create Oracle Database as a Service (DBaaS) in Oracle Cloud
Oracle Cloud is making a lot of news these days. With companies moving to cloud, it looks like Cloud is here to stay. Oracle provides a wide range of Cloud services in the areas of SaaS/DaaS, PaaS and...
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Oracle Cloud: Accessing the database services
In the last post, we have explored how to create a Oracle Database as a Service (DBaaS) in Oracle cloud. In this post, I will discuss about the methods of accessing the database service once it is...
View ArticleOracle 12c : Know and understand your PDB’s history
As we know, with Oracle 12c multi tenant architecture we can have multiple pluggable databases within a single container database. A pluggable database can be created in a container and if required...
View ArticleOracle 12c: Lost your PDB’s XML manifest file? Here’s how you can recover it
In this post, I will demonstrate how we can recover a pluggable database’s XML manifest file in the event of the the XML manifest file being lost or corrupted. When we UNPLUG a pluggable database from...
View ArticleOracle 12c: Global Index maintenance is now asynchronous
Introduction Maintaining global indexes were always a expensive task in Oracle, particularly in the context of partitioned tables, where dropping or truncating a table partition could cause a global...
View ArticleOracle 12c: DDL Logging.. will it serve the purpose?
Oracle had introduced a cool feature in version 11g, where we were able to log or track DDL statements executed in the database by means of a parameter called ENABLE_DDL_LOGGING without setting up...
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Oracle 12c: TRUNCATE can be cascaded down to the lowest level of hierarchy
Do you recall the following error? ---// ---// ORA-02266 when truncating table //--- ---// SQL> truncate table parent; truncate table parent * ERROR at line 1: ORA-02266: unique/primary keys in...
View ArticleDatapump import failed with ORA-04091: table is mutating
Recently one of my application team asked me to refresh few tables in a lower environment database using the production copy of the tables. As usual, I opted to perform a Datapump import (impdp) to...
View ArticleSharePlex: Integrate TDE with SharePlex replication
Transparent Data Encryption (TDE) is a Oracle database feature which was first introduced with Oracle 10g Release 2 as a OUT-OF-PLACE method to encrypt data at the storage level. By default, SharePlex...
View ArticleOracle 12c: Implemented TDE? Cloning a PDB? you need to perform few...
With Oracle 12c multitenant architecture, we need to maintain TDE encryption keys in both root (CDB$ROOT) and pluggable database (PDB) level. If we clone a PDB (which is encrypted with TDE) to another...
View ArticleMy Query is slow: Is it doing a FTS on a fragmented table?
Recently one of my application users complaint about a performance issue. They had a query that they were running in two different environments (Dev and QA) of the same application. The problem was...
View ArticleOracle 12c (12.1.0.2) : Enhancement made to the alternate archive...
In one of my earlier post, I had discussed about the option of setting up a alternate archive destination in Oracle database. We have seen that, how we can leverage the alternate archive destination...
View ArticleOracle 12c: A quick look in to the new SESSION sequence
We are aware of the Oracle’s sequences. Sequences help us generate incremented sequence of numbers to be used as key for a record in the table. Until Oracle 11g, we used to create sequences which are...
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OTN Appreciation Day: Restore and Recovery of database table in Oracle 12c
This post is my contribution to the OTN Appreciation Day, a idea coined by Tim Hall. I am going to talk about the new restore and recovery feature introduced in Oracle 12c. Until 12c, we didn’t have...
View ArticleOracle 12c: Customize your seed (pdb$seed) template PDB
Oracle has introduced multi tenant architecture with the release of Oracle database 12c (12.1.0.1). In a multi tenant Oracle database, we have a ROOT container database (CDB$ROOT), a SEED database...
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