The Problem
After I had solved ORA-01034 I created a table then took a break. Coming back to my laptop, I decided to close some apps I had running but they weren't responding. 
My VM wasn’t responding so I decided to just close it without shutting it down properly. I got impatient so I tried to end the process using Task Manager. Even after I did this, which is always my go-to solution to close stubborn apps, it didn’t work. 
So I decided to hot shutdown my laptop. By the time I started my laptop and logged on to my oracle database I got this error:
bash: sqlplus: command not found. 
Not this again, I lamented. 
The Solution
So I cracked my knuckles like they do in movies. And I went online to research the best way to solve this. I got my solution here: <a href="http://www.dba-oracle.com/t_sqlplus_command_not_found.htm" class="autolinkedURL autolinkedURL-url" target="_blank">dba-oracle.com/t_sqlplus_command_not_found...</a>
So I ran the commands below :
ORACLE_SID=orcl
export ORACLE_SID
ORACLE_HOME=/u01/app/oracle/product/12.1.0/dbhome_1
export ORACLE_HOME
PATH=$PATH:$ORACLE_HOME/bin
export PATH
[oracle@Iamgo0ke Desktop]$ sqlplus
Enter user-name: system
Enter password: 
Last Successful login time: Wed Aug 25 2021 16:57:09 -04:00
Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production
With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options
IT WORKS!!!!!!!!!!!!

So to save my settings permanently, because all I have done is to effect this setting in the current session, is to enter this command:
-&gt; vim ~/.bashrc
Type -&gt; i 
To insert then paste the settings above in BOLD under “user specific alias and functions”. It should look like this:
#.bashrc
#Source global definitions
if [ -f /etc/bashrc ]; then
 . /etc/bashrc
fi
#User specific aliases and functions
ORACLE_SID=orcl
export ORACLE_SID
ORACLE_HOME=/u01/app/oracle/product/12.1.0/dbhome_1
export ORACLE_HOME
PATH=$PATH:$ORACLE_HOME/bin
export PATH
~ ~ ~ ~ ~ ~ ~ ~ ~ "~/.bashrc" 14L, 269C
Enter-&gt; Esc on the keyboard 
and 
Type -&gt; :wq 
then press ENTER. 
So now our setting is permanent.

**The Problem**

After I had solved ORA-01034 I created a table then took a break. Coming back to my laptop, I decided to close some apps I had running but they weren't responding. 

My VM wasn’t responding so I decided to just close it without shutting it down properly. I got impatient so I tried to end the process using Task Manager. Even after I did this, which is always my go-to solution to close stubborn apps, it didn’t work. 

So I decided to hot shutdown my laptop. By the time I started my laptop and logged on to my oracle database I got this error:



***bash: sqlplus: command not found. ***

Not this again, I lamented. 

**The Solution**

So I cracked my knuckles like they do in movies. And I went online to research the best way to solve this. I got my solution here: **http://www.dba-oracle.com/t_sqlplus_command_not_found.htm**

So I ran the commands below :



***ORACLE_SID=orcl
export ORACLE_SID
ORACLE_HOME=/u01/app/oracle/product/12.1.0/dbhome_1
export ORACLE_HOME
PATH=$PATH:$ORACLE_HOME/bin
export PATH***




[oracle@Iamgo0ke Desktop]$ ***sqlplus***

Enter user-name: ***system***



Enter password: 

Last Successful login time: Wed Aug 25 2021 16:57:09 -04:00

*Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production
With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options
IT WORKS!!!!!!!!!!!!
*

So to save my settings permanently, because all I have done is to effect this setting in the current session, is to enter this command:



-> **vim ~/.bashrc**



Type -> *** i  ***

To insert then paste the settings above in **BOLD **under “*user specific alias and functions*”. It should look like this:



#.**bashrc**

#**Source global definitions
if [ -f /etc/bashrc ]; then
        . /etc/bashrc
fi**

#**User specific aliases and functions**

**ORACLE_SID=orcl
export ORACLE_SID
ORACLE_HOME=/u01/app/oracle/product/12.1.0/dbhome_1
export ORACLE_HOME
PATH=$PATH:$ORACLE_HOME/bin
export PATH
**~                  **                                                             
~                                                                               
~                                                                               
~                                                                               
~                                                                               
~                                                                               
~                                                                               
~                                                                               
~                                                                               
"~/.bashrc" 14L, 269C**



Enter-> ***Esc*** on the keyboard 

and 

Type -> ***:wq ***

then press ENTER. 

So now our setting is permanent.


The Third Encounter ....... How to Solve:-> sqlplus: command not found error