How to increase number of database writer in Oracle Database

Database Writer Process (DBW) The database writer process (DBW) writes the contents of database buffers to data files. DBW processes write modified buffers in the database buffer cache to disk. Although one database writer process (DBW0) is adequate for most systems, you can configure additional processes—DBW1-DBW9, DBWa-DBWz and BW36-BW99—to improve write performance if your system […]

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Overview For Oracle Database Gateway

Gateway Installation You can install Oracle Database Gateway in either of the following configurations: ■ On the same computer as an existing Oracle database but in a different Oracle home. ■ On a system with no Oracle database. ■ On the same computer as the Oracle database and in the same Oracle home directory. Note that in this […]

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Steps for Create RAC Database Manually

Manual Creation of Database is a big task for DBA. This is the initial steps for setup the IT project. We know that we can create the database in two ways one is DBCA and another is  Manual. Creation of Database in RAC environment different from the Standalone database. In this post we are going have look on […]

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Compatibility Matrix for Oracle Database

Upgrade Compatibility Matrix for Upgrading to 12.2.x Minimum Version of the database that can be directly upgraded to Oracle Database 12c Release 2            Source Database                         Destination Database                         /                                  12.2.x                         /                                  12.2.x The following […]

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Tuning the locks of SGA

This post describes some deep knowledge of SGA. LOCK_SGA is used to make sure that the contents from the SGA are not flushed, i.e data from the DB buffer cache not written back to disc. It is like to pin the contents of SGA. SGA_LOCK  locks the entire SGA into physical memory. It is usually advisable to […]

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Schema and Non-Schema Objects in Oracle Database

Oracle database contains schema objects like views, tables, triggers etc., and several other types of objects which are also stored in the database but are not contained in a schema. A schema is a collection of logical structures of data, or schema objects which is owned by a database user and has the same name […]

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ORA-32004: obsolete or deprecated parameter(s) specified for RDBMS instance

I am getting ORA-32004 error while starting the database but all the parameters in spfile are fine. This issue came after upgrade the database from 10g to

How to fix the ORA-32004 error? Cause: ORA-32004 causes because one or more obsolete parameters were specified in the SPFILE. These depreciated parameters are still in use […]

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VI editor shows the error Terminal too wide within Solaris

You may receive the following error when using VI editor within Solaris. I got this error when I was adding tns entry in tnsnames.ora file.

Here, VI will not allow to edit files. For editing you must increase the number of columns as shown below. To resolve this increase the number of columns using […]

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Error in Process orapwd.exe and unable to find error file opw.msb

I was trying to install Oracle 11g R2(64bit) on Windows 7 64 bit OS. But While Creating Database using DBCA i got this error. Below is the screenshot. Error in Process: %ORACLE_HOME%\server\bin\orapwd.exe Unable to find error file %ORACLE_HOME%\RDBMS\opw<lang>.msb Resolution: Set proper Home and Path using cmd and launch the dbca.

Thank you for giving […]

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