golang oracle installation

Golang is an efficient programming language that is loved by developers for its fast execution speed and simple syntax structure. Oracle database system is a world-famous relational database management system and is widely used in enterprise-level applications. This article will introduce how to install and configure Oracle database in golang environment.

1. Download and install Oracle Instant Client

Since the Oracle database system is a commercial software, we need to download and install Oracle Instant Client to connect to the Oracle database. Before installation, we need to ensure that the Oracle Instant Client component is downloaded and installed. You can download it through the following steps. You can download it directly from the official website or download it from a third-party software source.

1. Visit Oracle's official website and select "Oracle Instant Client" on the download page.
2. Select the corresponding version according to your operating system architecture and click to download.
3. After the download is complete, unzip the file and save it in a local directory.
4. Add the decompressed folder to the environment variable to ensure that Oracle Instant Client can be executed in the terminal.

2. Install Oracle Instant Client

Before installing Oracle Instant Client, we need to take the following steps to ensure that the necessary software packages have been installed in the system.

1. Install the gcc compiler

First, we need to install the gcc compiler to compile Oracle Instant Client. Install through the following command:

sudo apt-get install gcc

2. Install Golang

Golang is the language we mainly use, so we need Install Golang first. This can be accomplished through the following steps:

1) Download the golang installation package:

curl -O https://dl.google.com/go/go1.13.1.linux-amd64.tar .gz

2) Decompress the golang installation package:

sudo tar -xvf go1.13.1.linux-amd64.tar.gz

3) Unzip the Move the folder to the /usr/local directory

sudo mv go /usr/local

4) Add environment variables in the .bashrc file:

export GOROOT=/usr /local/go
export PATH=$GOPATH/bin:$GOROOT/bin:$PATH

3. Install and configure Oracle Instant Client

1) Pass the following Command to install Oracle Instant Client:

sudo apt-get install libaio1 libaio-dev -y

2) Unzip the downloaded Oracle instant client:

mkdir - p /opt/oracle && cd /opt/oracle
unzip instantclient-basiclite-linux.x64-19.8.0.0.0dbru.zip

3) Unzip instantclient-basiclite-linux.x64-19.8.0.0 Change the .0dbru folder name to instantclient:

mv instantclient-basiclite-linux.x64-19.8.0.0.0dbru instantclient

4) Configure Oracle Instant Client environment variables:

echo '/opt/oracle/instantclient' | sudo tee -a /etc/ld.so.conf.d/oracle-instantclient.conf
sudo ldconfig
sudo sh -c "echo /opt/oracle/ instantclient > /etc/ld.so.conf.d/oracle-instantclient.conf"
export PKG_CONFIG_PATH=/opt/oracle/instantclient/lib/pkgconfig:$PKG_CONFIG_PATH
export LD_LIBRARY_PATH=/opt/oracle/ instantclient:$LD_LIBRARY_PATH

5) Verify whether oracle instant client is successfully installed:

pkg-config oci8 --cflags --libs

4. Install Go Oracle Driver

We need to install the Go Oracle Driver through the following steps:

1) Install the Oracle Driver:

go get gopkg.in/rana/ora.v4

2) Verify whether the installation is successful:

go run /path/to/test-oracle.go

3. Connect to Oracle database

During installation and configuration After completion, we can connect to the Oracle database through the following code:

import (
"fmt"
"gopkg.in/rana/ora.v4"
)

func main() {
db, err := sql.Open("ora", "user/password@dbname")
defer db.Close()
if err != nil {

  log.Fatal(err)

}
rows, err := db.Query("SELECT name FROM user;")
if err != nil {

  log.Fatal(err)

}
defer rows.Close ()
for rows.Next() {

  var name string
  rows.Scan(&name)
  fmt.Println(name)

}
}

The above is a simple tutorial on connecting and configuring Oracle database in Golang environment. By installing and configuring the Oracle database and Go Oracle Driver through the above steps, we can easily connect to the Oracle database in the application to read and write data.

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