Linux Mount and Umount file system in linux

By -
Mount

The mount command mounts a storage device or filesystem, making it accessible and attaching it to an existing directory structure.
Step1:Check all partitions in linux server
fdisk –l


This command list all existing disk partition on your system. The ‘-l‘ argument stand for (listing all partitions) is used with fdisk command to view all available partitions on Linux. The partitions are displayed by their device’s names. For example: /dev/sda, /dev/sdb or /dev/sdc.


Step 2: check disk space available

Df  -hT

df displays the amount of disk space available on the file system



Step 3: Umount new disk space

Umount /dev/sde1 


Step 4: create new directory

[root@devserver ~]# mkdir /PRODHD



Step 5: Mount the new directory

[root@devserver ~]# mount /dev/sde1 /PRODHD


Step6: check new mount point

df –hT


Umount :

The umount command "umounts" a mounted filesystem, informing the system to complete any pending read or write operations, and safely detaching it.

Step1:- Check which disk umount

Df -h


Step 2: Planned to /PRODHD disk is umount

Step 3: Enter umount command

umount  /dev/sdd1

Error:


Solutions:

Step 4: showing any error Check  umount scripts

#man umount

umount  -l  /dev/sdd1




Step 4: After check your mount Point device is umounted.



Comments

Post a Comment

Popular posts from this blog

How to troubleshoot long running concurrent request in R12.2

By -
Normally we are getting concurrent program running longer and concurrent request not picking jobs, etc. those are very frequent issue we expected from development team. Collect below basis level of information to development team 1 Oracle seeded program/Custom program? 2 How much time it used earlier? 3 Is there any recent code change done in concurrent program? 4 Is this program fetching higher data compare to last run? 5 Does this job running any specific time/ It can be run any time? 6 Does this job fetching data using DB link? 7 Does the problem happen on both the test and production instance? Once asked above questions to development team in meanwhile we need to start basic sanity check in our environment. 1 Verify the status of the concurrent program Copy select REQUEST_ID,phase_code,status_code,ORACLE_SESSION_ID from apps.fnd_concurrent_requests where request_id=’1234567’;
Read more

How to run Gather Schema Statistics in R12.2

By -
Image
What is Gather Schema Statistics? Gather Schema Statistics program generates statistics that quantify the data distribution and storage characteristics of tables, columns, indexes, and partitions. The cost-based optimization (CBO)  uses these statistics to calculate the selectivity of prediction and to estimate the cost of each execution plan. Why Run the Gather Schema Statistics? When Data is update, insert, delete in table of user end Like (Technical User ,Finance User ,Ect) It become necessary to run the Gather Schema Statistics It’s recommended to Run GSS in Weekly Once or twice. How to run Gather Schema Statistics? Login application with sysadmin user Submit Request Window Navigate to: Concurrent > Requests Enter the parameters This can be run for specific schemas by specifying the schema name or enter ‘ALL’ to gather statistics for every schema in the database Submit the Gather Schema Statistics program Parameters: Schem
Read more

How to compile forms in R12.2

By -
STEP 1--> Login to app server STEP 2--> Go to  directory $AU_TOP/forms?US STEP 3--> Move to ".fmb" file STEP 4--> Execute the below command to generate ".fmx" frmcmp_batch userid=apps/<apps_pwd> module=<form_name>.fmb output_file=<form_name>.fmx module_type=form batch=no compile_all=special (EX):-   frmcmp_batch userid=apps/apps module=JAINTAXT.fmb output_file=$JA_TOP/forms/US/JAINTAXT.fmx module_type=form batch=no compile_all= special (O/p):   Created form file /oracle/CLONE/apps/fs2/EBSapps/appl/ja/12.0.0/forms/US/ JAINTAXT.fmx Refer: R12: How to Compile a Form in Release 12 (Doc ID 1085928.1)
Read more