open sqlplus connection only once in while loop - oracle

Question

I have 100 records. When I am running the code below, the SQL*Plus connection is opening many times utilizing 100% of CPU. Is there any way in which I could open SQL*Plus connection only once, i. e. outside while loop?
**#!/bin/bash
export ORACLE_HOME=/software/oracle/ora10204
export PATH=$PATH:$ORACLE_HOME/bin
INPUT_FILE='file.csv'
IFS=','
i=0
while read name id do
a[i]="$name"
b[i]="$id"
echo "${a[$i]} ${b[$i]}"
set serveroutput on;
sqlplus .../...#'(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=...)(HOST=...)(PORT=...)))(CONNECT_DATA=(SID=...)))'<<EOF
insert into code_entry(inh_valu,edi_valu) values('${a[$i]}' , '${b[$i]}');
EOF
let i=$i+1
done < $INPUT_FILE**

Answer 1

You could create a SQL script, that you would invoke once in the end of your shell script with SQL*Plus. It would use INSERT ALL DML command, and you would just append the strings to it using your shell script and redirect operator (>>) within your existing loop.
After running your shell script your SQL script could look like this:
insert all
into code_entry (inh_valu, edi_valu) values (1, 'foo')
into code_entry (inh_valu, edi_valu) values (2, 'bar');
...
You would then just run it like this:
$ sqlplus scott/tiger #myscript.sql
A sample shell script could look like:
echo "insert all" > myscript.sql
INPUT_FILE='file.csv'
IFS=','
i=0
while read name id do
a[i]="$name"
b[i]="$id"
echo "into code_entry(...) values ('${a[$i]}', '${b[$i]}')" >> myscript.sql
let i=$i+1
done < $INPUT_FILE**
echo ";" >> myscript.sql
sqlplus .../...#'(DESCRIPTION=...)' #myscript.sql