Mir Sayeed Hassan – Oracle Blog

Oracle DBA – Tips & Techniques | Learn with real-time examples

  • Translate

  • It’s Me






  • My Certificates

  • Links

    My Acclaim Certification : Credly Profile
    My Oracle ACE Pro Profile

  • Achievements

    Awarded Top 100 Oracle Blogs from Worldwide - #RANK 39
  • VISITORS COUNT

  • Verified International Academic Qualification from World Education Service (WES)

    Verified International Academic Qualification from World Education Service (WES)

  • Jobs

Archive for the 'MISCELLANEOUS' Category

How to release deleted file size without reboot of server

Posted by Mir Sayeed Hassan on 31st December 2017

How to release deleted file size without reboot of server Check the size of the disks: [root@DB ~]# df –h Filesystem            Size  Used Avail Use% Mounted on /dev/mapper/vg_db-root 22G   16G  5.0G  76% / tmpfs                  20G  … Read more..

Posted in MISCELLANEOUS | Comments Off on How to release deleted file size without reboot of server

Run SQL Query from Linux command as shown below:

Posted by Mir Sayeed Hassan on 25th December 2017

Run SQL Query from Linux command as shown below: Method 1: [oracle@testdb ~]$ echo “select table_name from user_tables;” | sqlplus -s mir/mir123 TABLE_NAME —————————— TEST1 TEST2 [oracle@testdb ~]$ echo “select * from test1;” | sqlplus -s mir/mir123 ENO ———- 1 2

Posted in MISCELLANEOUS | Comments Off on Run SQL Query from Linux command as shown below:

Copy OS files from one location to another by sql*plus using Oracle function UTL_FILE.FCOPY

Posted by Mir Sayeed Hassan on 25th December 2017

Copy OS files from one location to another by sql*plus using Oracle function UTL_FILE.FCOPY Overview: Create the sample 2 directories for test & create 1 file in one of the directory therefore create a user for new test or use existing user. Grant the appropriate privilege to the user and copy the files from one Read More

Posted in MISCELLANEOUS | Comments Off on Copy OS files from one location to another by sql*plus using Oracle function UTL_FILE.FCOPY

Find the Quick General query as per your requirement

Posted by Mir Sayeed Hassan on 4th October 2017

Find the Quick General query as per your requirement Find the status of the database SQL> select status from v$instance; STATUS ———— OPEN SQL> select database_status from v$instance; DATABASE_STATUS —————– ACTIVE Or – To get… Read more..

Posted in MISCELLANEOUS | Comments Off on Find the Quick General query as per your requirement