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main.go
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main.go
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package main
import (
"context"
"database/sql"
"flag"
"fmt"
"os"
"time"
_ "github.com/illacloud/go-ora-v1"
)
func main() {
var (
server string
)
flag.StringVar(&server, "server", "", "Server's URL, oracle://user:pass@server/service_name")
flag.Parse()
connStr := os.ExpandEnv(server)
if connStr == "" {
fmt.Println("Missing -server option")
//usage()
os.Exit(1)
}
fmt.Println("Connection string: ", connStr)
db, err := sql.Open("oracle", connStr)
if err != nil {
fmt.Println("Can't open database: ", err)
return
}
defer func() {
err = db.Close()
if err != nil {
fmt.Println("Can't close database: ", err)
}
}()
connectCtx, connectCancel := context.WithTimeout(context.Background(), time.Second*3)
defer connectCancel()
conn, err := db.Conn(connectCtx)
if err != nil {
fmt.Println("Can't open connection: ", err)
return
}
defer func() {
err = conn.Close()
if err != nil {
fmt.Println("Can't close connection: ", conn)
}
}()
execCtx, execCancel := context.WithTimeout(context.Background(), 6*time.Second)
defer execCancel()
_, err = conn.ExecContext(execCtx, "begin DBMS_LOCK.sleep(5); end;")
if err != nil {
fmt.Println("Can't execute: ", err)
}
}