ORA-01017: invalid username/password; logon denied when connection

Question

I get the given below error, when I connect localhost (docker - oracle-12.2.0.1) using Go. Same connection is working fine when I connect by table plus . Please suggest me to resolve this issue.

Reference

Code

conn, err := sql.Open("oracle", "oracle://SYS:Oradoc_db1@localhost/ORCLPDB1.localdomain")
if err != nil {
    fmt.Println("Can't open the driver", err)
    return
}

Error1

ORA-28009: connection as SYS should be as SYSDBA or SYSOPER

Code

conn, err := sql.Open("oracle", "oracle://SYSDBA:Oradoc_db1@localhost/ORCLPDB1.localdomain")
if err != nil {
    fmt.Println("Can't open the driver", err)
    return
}

Error2

ORA-01017: invalid username/password; logon denied

Answer 1

The username and password must be same as was specified in a GRANT CONNECT statement. And if you are entering the username and password together the format should be like this: username/password . Also check if they are case sensitive or not.

try this format:

 db, err := sql.Open("oracle", "<your username>/<your password>@service_name")
    if err != nil {
        fmt.Println(err)
        return
    }
    defer db.Close()

OR

Also confirm golang oracle database driver

db, err := sql.Open("goracle", username+"/"+password+"@"+host+"/"+database)
if err != nil {
    fmt.Println("... DB Setup Failed") 
    fmt.Println(err)
    return
}
defer db.Close()