Adding swap space in Linux

Adding swap space in Linux


[root@ip-anurag grid]#
[root@ip-anurag grid]#
[root@ip-anurag grid]# free -g
              total        used        free      shared  buff/cache   available
Mem:              3           0           0           0           2           2
Swap:             0           0           0
[root@ip-anurag grid]#
[root@ip-anurag grid]# dd if=/dev/zero of=/swap_file bs=2G count=1
0+1 records in
0+1 records out
2147479552 bytes (2.1 GB) copied, 29.8424 s, 72.0 MB/s
[root@ip-anurag grid]# chmod 600 /swap_file
[root@ip-anurag grid]# mkswap /swap_file
Setting up swapspace version 1, size = 2097144 KiB
no label, UUID=9bd76b65-4abe-4ffb-a580-d4e9283daac2
[root@ip-anurag grid]#
[root@ip-anurag grid]# swapon /swap_file
[root@ip-anurag grid]#
[root@ip-anurag grid]# vi /etc/fstab
[root@ip-anurag grid]#

[root]# swapon --show

NAME       TYPE SIZE USED PRIO

/swap_file file   2G   0B   -2

[root@ip-10-0-1-12 ~]#

/swap_file               swap                    swap    defaults        0 0

[root@ip-anurag grid]#
[root@ip-anurag grid]# free -m
              total        used        free      shared  buff/cache   available
Mem:           3787         655        2274          16         857        2898
Swap:          2047           0        2047
[root@ip-anurag grid]#
[root@ip-anurag grid]#

Oracle 19c installation on Linux 8 : error while loading shared libraries: libnsl.so.1: cannot open shared object file: No such file or directory

Error while starting ./runInstaller for oracle 19c installation on Linux 8




[oracle@ip-192-168-43-225 oracle]$ ./runInstaller
/u01/oracle/perl/bin/perl: error while loading shared libraries: libnsl.so.1: cannot open shared object file: No such file or directory
[oracle@ip-192-168-43-225 oracle]$

Solutions: error while loading shared libraries: libnsl.so.1: cannot open shared object


In addition, we need to install below RPM after that start the Oracle 19c installation.


dnf install -y libnsl
dnf install -y libnsl.i686
dnf install -y libnsl2
dnf install -y libnsl2.i686




further, follow below link to complete the oracle database installation 

https://anuragkumarjoy.blogspot.com/2020/04/oracle-database-19c-step-by-step.html


[oracle@ip-192-168-43-225 ~]$ sqlplus "/as sysdba"

SQL*Plus: Release 19.0.0.0.0 - Production on Mon Apr 13 18:56:09 2020
Version 19.3.0.0.0

Copyright (c) 1982, 2019, Oracle.  All rights reserved.


Connected to:
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.3.0.0.0

SQL> select name ,open_mode from v$database;

NAME      OPEN_MODE
--------- --------------------

INDIA     READ WRITE

[oracle@ip-192-168-43-225 ~]$ cat /etc/redhat-release
Red Hat Enterprise Linux release 8.0 (Ootpa)
[oracle@ip-192-168-43-225 ~]$

19c Database Installation on Linux 8 fails with Error [INS-08101] Unexpected error while executing the action at state:'SupportedOSCheck'

19c Database Installation fails with Error:[INS-08101] Unexpected error while executing the action at state:'SupportedOSCheck'


Define below parameter before start ./runInstaller for oracle 19c installation on Linux 8




export CV_ASSUME_DISTID=RHEL7.6


To avoid below error :

further, follow below link to complete the oracle database installation 

https://anuragkumarjoy.blogspot.com/2020/04/oracle-database-19c-step-by-step.html


[oracle@ip-192-168-43-225 ~]$ sqlplus "/as sysdba"

SQL*Plus: Release 19.0.0.0.0 - Production on Mon Apr 13 18:56:09 2020
Version 19.3.0.0.0

Copyright (c) 1982, 2019, Oracle.  All rights reserved.


Connected to:
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.3.0.0.0

SQL> select name ,open_mode from v$database;

NAME      OPEN_MODE
--------- --------------------

INDIA     READ WRITE

[oracle@ip-192-168-43-225 ~]$ cat /etc/redhat-release
Red Hat Enterprise Linux release 8.0 (Ootpa)

[oracle@ip-192-168-43-225 ~]$

Oracle support doc


19c Database/client Installation fails with Error:[INS-08101] Unexpected error while executing the action at state:'clientSupportedOSCheck' (Doc ID 2584365.1)