Archive for October 2020

How to check table or segments size in a schema in Oracle 5 (2)

October 30, 2020

To check the size of table or segments in a schema in Oracle In an Oracle database, a segment is a set of extents that contains all the data for…

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How to Compile Invalid Public Synonyms 4 (1)

October 28, 2020

Steps to compile invalid public synonyms In my environment after doing an application upgrade some of the public synonyms get invalid. Below is the query to check invalid public synonyms…

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How to Find Date after Upgrade or Downgrade in Oracle 5 (1)

October 27, 2020

Find Date after Upgrade or Downgrade in Oracle Today, my one DBA friend asked about how to validate the database upgraded or downgraded from which version along with what was…

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How to check size of a schema in Oracle 4 (3)

October 26, 2020

Check Schema size in Oracle A schema in an Oracle database is defined as a collection of database objects and is owned by a database user. The schema name shares…

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Oracle Critical Database Patch IDs for October 2020 5 (1)

October 22, 2020

Oracle Critical Database Patch IDs for October 2020 Patch Release by Oracle  An Essential/Critical Patch Update could be a collection of patches for multiple security vulnerabilities. These patches address vulnerabilities…

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ORA-01102: Cannot Mount Database in EXCLUSIVE mode 5 (2)

October 21, 2020

ORA-01102: Cannot Mount Database in EXCLUSIVE mode When we are doing database refresh from Prod to Dev (lower environment), At that time we put the cluster database parameter to false….

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How to Find Total, Free & Utilized values of PROCESSES, SESSIONS & TRANSACTIONS in Oracle 0 (0)

October 20, 2020

Find Total, Free & Utilized values of PROCESSES, SESSIONS & TRANSACTIONS SQL command for standalone database. Click here to get sample output. SQL command for RAC database. Click here to…

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How to Validate Applied Patch in Oracle 12c 0 (0)

October 19, 2020

Validate Applied Patches in Oracle 12c Whenever we do patch apply before/after, need to validate all applied patches in Oracle home & databases. Below is the command to validate patches…

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How to Check when Database was Last Cloned or Open Resetlog Mode in Oracle 4 (1)

October 17, 2020

How to Check when Database was Last Cloned or open Resetlog Mode in Oracle. If we want to find when was my database cloned last time or when you open…

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Step by Step Installation of Oracle Client 5 (1)

October 16, 2020

Step by Step installation of Oracle Client As most of us already know oracle client is installed on the application server to execute SQL command or compile script related to…

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