To run SQL statements, utilities, and commands, or to browse
and access files on remote servers from IBM® Data Studio, you
must ensure that the DB2® Administration
Server (DAS) or Secure Shell (SSH) protocol and Secure File Transfer
(SFTP) protocol are properly configured.
Depending on the operating system of the target server on which
you want to run commands or utilities,
IBM Data Studio uses
the DB2 Administration Server
(DAS) or the Secure Shell (SSH) protocol. The following table shows
which protocol
IBM Data Studio uses.
Table 1. Protocol that is used to run commands and utilities on remote
serversOperating system |
Method for remote commands and utilities |
Windows |
For connecting to a local database on Windows, SSH is used. For connecting
to remote databases, SSH is first attempted. If the SSH is unavailable,
DAS is attempted.
Note: Remote DB2 for Linux, UNIX, and Windows V8.2
servers use only DAS.
|
Linux or UNIX |
SSH is used. |
- Browsing and accessing remote file systems
- The SFTP protocol is always used when you browse and access remote
file systems.
- For Windows systems that
run the supported OpenSSH service implementation from Cygwin, the Windows drives and the associated
file systems paths are located in the default directory cygdrive.
No other Cygwin directory paths to the file system are valid when
you use IBM Data Studio to
run commands.
Restriction: IBM Secure
Shell Server for Windows,
which is installed with DB2 V10.1
Server products, is not supported and cannot be used to run SQL statements,
utilities, and commands, or to browse and access files on remote servers.
Requirements for DAS or SSH and SFTP on the computer
where you installed IBM Data Studio
- DB2 Administration Server
(DAS)
- The IBM Data Server Client
is required in order to communicate with the DB2 Administration Server (DAS).
The connectivity
libraries that are required for remote operations can be provided
by installing either of the following products:
- A local DB2 database server
instance
- IBM Data Server Client
- Secure Shell (SSH) and Secure File Transfer (SFTP) protocols
- To use the SSH and SFTP protocols, no additional configuration
is required on the client. IBM Data Studio is
pre-configured with an SSH and SFTP client.
Requirements for DAS, SSH, and SFTP on the remote
server
- DB2 Administration Server
(DAS)
- To use DAS on a Windows system,
the DB2 Administration Server
(DAS) must be started, and port 523 must be open.
- Secure Shell (SSH) and Secure File Transfer (SFTP) protocols
- To use the SSH and SFTP protocols on Linux or UNIX system,
the SSH and SFTP daemons must be started. If they are not running,
start them or ask your system administrator to start them. SSH requires
that port 22 must be open.
To use the SSH and SFTP protocols on
a Windows system, an OpenSSH
environment must be set up. IBM Data Studio supports
SSH communication to DB2 for Linux, UNIX, and Windows servers
that run in a Cygwin emulation environment through Portable Operating
System Interface for UNIX (POSIX).
In its Open Source distribution, the Cygwin environment includes the
OpenSSH server implementation of the SSH and SFTP protocol (Cygwin
Net packages openssl, openssh). IBM Data Studio uses
the Secure File Transfer protocol (SFTP) for all file system browsing
and remote file transfer. Therefore, SFTP must be enabled.
Setting
up the OpenSSH environment on a target server that runs on a Windows system requires installing
Cygwin, configuring the daemon to run as an automatic service, and
synchronizing the Cygwin environment user accounts and groups with
the operating system user repository to allow remote login to the
remote Windows system. You
can download and install Cygwin from http://cygwin.com. For information about installing and configuring
Cygwin on a Windows server,
see Installing Cygwin on a Windows server and Configuring Cygwin on a Windows server.