We wanted to know if we execute unix host commands from PLSQL program.
Does this invoke host commands in oracle DB installed OS or we can invoke host commands for different servers? Please suggest.
Have not tried any solution, need suggestions/inputs before implementation.
edit
Our requirement is like we have an application that has app layer and database layer. App layer contains application related programs which interact with database layer for any database information. App layer and database layer reside in different hosts (different ip addresses). Application related programs are unix shell scripts that interact with file system.
Client requirement is that instead of shell script interacting with file system, PL/SQL code should do the work so that we have complete security.
Solutions suggested by Xing and Ozhan are in direction of Java code interacting with file system and providing the related information. Filesystem interaction is done using the host command program in Java. My question is if we run the host commands using java program in app layer will it connect to file system of app layer or will it connect to file system of database layer? We want file system layer of the client system connected, not the database server.
Hope I have articulate my requirement. Please let me know if you need any other info.
Answer is yes and no
YES -> using sqlplus you can run host command from the machine you connect from.
NO -> when using utl packages it always redirects to the db machine/server
eg:
after connecting from sqlplus from windows/linux from local machine; you can do this
host mkdir abcd
host ls *.log
Strictly speaking, you can't execute host commands from PL/SQL.
Related
I have a requirement to create a directory at run time in linux application server and create a report in that directory. I'm using the below command but its not working. Can you please advise?
webutil_host.host('mkdir -p '||'/BEE/temp/rdf');
As I mentioned in your Oracle Forum post, WebUtil is for working with function on the user tier. So unless your user is running a Unix/Linux OS, you code won’t work. Remove the Webutil part of the call and just use HOST.
https://community.oracle.com/tech/developers/discussion/4483447/not-able-to-create-a-directory-in-linux-application-server-using-oracle-forms-12c
Also, as some mentioned above, it is unclear why you have the pipes in you code.
I've read multiple posts on running scripts on GCP VMs but unfortunately could not find an answer that would satisfy my needs.
I have a Go application and I'm looking for a way to run a bash script on a VM instance programatically.
I'm using a Google Cloud Golang SDK which allows me to fetch VM instance info. Unfortunately SDK does not contain a functionality that allows running a bash script on a specific instance(unlike an Azure Cloud SDK for example).
Options I've found:
Google Cloud Compute SDK has an option to set a startup script, that
will run every time an instance is restarted.
Add instance-level public SSH key. Establish an SSH connection and
run a script using Go SSH client.
Problems:
Obviously startup script will require an instance reboot and this is not possible in my use case.
SSH might be also problematic, in case instance is not running SSH
daemon or SSH port is not open. Also, SSH daemon config does not
permit root login by default(PermitRootLogin might be false), thus
script might be running on a non privileged user, making this option not
suitable either.
I should probably note that I am not authorised to change configuration of those VMs (for example change ssh daemon conf to permit root login), I can just use a token based authentication to access them, preferably through SDK, though other options are also possible as long as I am not exposing the instance to additional risks.
What options do I have? Is this even doable? Am I missing something?
Thanks!
As said by Kolban, there is no such API to trigger from outside a bash inside the VM. The best solution is to deploy a webserver (a REST API) that call the bash and to expose it (externally or internally).
But you can also cheat. You can create a daemon on your VM that you run with a startup script and that listen a custom metadata; let's say check it every seconds.
When the metadata is updated, the daemon can perform actions. You can imagine that the metadata contain the script to run with the parameters. At the end of the run, the metadata is cleaned by the daemon.
So now, to run your bash, call the setMetadata Api. It's not out of the box, but you can have something similar of what you expected.
Think of GCP as providing the virtual machine infrastructure such as compute, memory, disk and networking. What runs when the machine boots is between you and the machine image. I am hearing you say that you want to run a bash script within the VM. That is outside of the governance of GCP. GCP will only affect the operation and existence of the environment. If what you want to happen is run a script within the VM programatically you will need to run some form of demon inside the VM that can be signaled to run such a script. This could be a web server such as flask or express, it could be your SSH server or it could be some other technology you choose.
The core thing I think you were looking for was some GCP API that, when called, would run a script within the Compute Engine. I'm going to say that there is no such API.
I am trying to set up a test environment on my mac (os 10.12) and it requires Fishbowl/Firebird DB. No matter what I do i bounce back and forth between these two errors:
isql localhost:/Users/me/Fishbowl/database/data/EXAMPLE.FDB
which gives me:
Your user name and password are not defined. Ask your database
administrator to set up a Firebird login.
And anything to do using gsec to create user or change password:
And:
Statement failed, SQLSTATE = HY000 operating system directive stat
failed
-Bad file descriptor
This is supremely frustrating. Fishbowl Client itself seems to hit this DB just fine. I have chmod 770 the /tmp/firebird directory and even tried to chown the example.fdb file itself.
Can anyone tell me how I might hit this DB from my java app or commandline? Both ways produce these errors.
1) Your connection line starts with "localhost:". That means you user TCP/IP connection to reach the database server. And the database server is running in a separate process. That means chmod and chown should not matter as long as there is firebird daemon server running and listening at TCP port ( default is 3050 AFAIR, you can read the value of your installation in the text file firebird.conf ).
Indeed, there is so-called "embedded server" or "embedded mode" where the server is loaded as DLL/SO library into the application. But then the connection string can not have network protocol prefix, so that should NOT be your case.
2) You can check documentation at http://firebirdsql.org/manual/isql-switches.html to specify your user and password in the isql command line. The Firebird has one built-in superuser, namely "SYSDBA". Regarding the password it might be a bit complicated.... It differs by Firebird version and platform
2.0) whatever SYSDBA password might be set by the server installation, if server comes in a bundle with some application the said application can override it later. Then you would either have to contact application developers or try to remove the bundled FB and install your own vanilla one, risking rendering the application no more functioning.
2.1) Windows installation of FB 2.x sets the "default" SYSDBA password as "masterkey" (only 8 first symbols actually matter)
2.2) Linux installation of FB 2.x generates a random SYSDBA password and saves it into a text file in Firebird folder.
2.3) MacOS ? Don't know. Perhaps it is closer to Linux than to Windows. So try to find such a text file and try "masterkey"
2.4) With FB 3 the authentication methods and configuration was greatly overhauled, so... So it is quite hard to tell something specific. At least for me.
3) I don't know what Fishbowl ever is, but Google suggests this: https://www.fishbowlinventory.com/wiki/Fishbowl_for_Mac
If that is so, then check the bottomline examples at that page. They stress that you should sudo all those commands. That also makes sense because
3.1) Firebird daemon might have "trusted authentication" enabled, mapping FB users to Operating System users. On UNIX that would at least map SYSDBA to root. On Windows - to Administrator (however it is localized). This does not have to be enabled, but if it is then sudo UNIX command is exactly what makes applications run with OS superuser grants and might explain lack of user and password in the command line examples.
3.2) Firebird embedded server/mode work as part of an application process, and especially with CS (Classic Server) package on UNIX the command line utilities tend to fall into this mode. Then again it needs to be run as root to read highly sensitive data from Firebird Security Database, thus the need to sudo the command. Granted, I do not think your isql command might ever run in embedded mode - because you do specify "localhost:' prefix. But the example at the wiki link above - backup and restore - they use local connection strings, so they probably do run as embedded. So that might give you yet another hint - to try remove "localhost:" prefix from the connection string and to sudo isql rather than running it from regular user. It would hardly be a normal mode, but for test purposes why not.
Hope this helps.
PS. you might also try this Firebird IDE - it is simplistic, but again, for testing purposes... http://www.flamerobin.org/dokuwiki/wiki/manual
I have to write a script on Lotus Server which is on Windows server to save a csv file on UNIX server. I and Unix server path requires authentication. So can somebody help me or suggest me how to do it?
Thanks in advance.
Siddhartha
Could setting up a FTP server on Domino and accessing this from your UNIX server be an option ?
Mindoo FTP server
I once resolved this in two steps:
1. Save the file to a temporary directory on the D omino server using LotusScript
2. Create a scheduled taks on the windowd serverr to copy the file to the second server
Advantages:
You can specify any user in the scheduled task and you don`t have to care about accessibility of the other server.
Disadvantages
Two separate processes.
Hope that helos.
Michael
In my scenario which was very similar to yours, I did the following:
On the Windows Server, I created a Mapped Drive to the folder on the Unix OS. This also managed the Authentication.
In the LotusScript Agent, I extracted to this Mapped Drive, which worked 100%.
You need to provide more details. Presuming you can access the Unix folder from Windows Explorer, map the drive and let Windows store the password. Then access it through the mapped drive letter.
LotusScript can't write to UNC locations, so you need the drive letter.
That file will be probably picked up by another program. CVS is the worst approach. You could offer to write to a Web Service or provide one.
Update
On Unix "access" more often than not doesn't mean a CIFS (a.k.a Windows share) access, but SSH (or FTP). For SSH you would want to:
configure SSH Keys, so you actually don't need username/password any more
use a Java library as asked on Stackoverflow before (or an alternative)
you also could write the file to a temp directory and call a cmd file for the copy operation
With a little care (make the cmd file configurable) the stuff will work when moving your Domino to Unix/Linux too
Let us know how it goes
I'm trying to obtain the full path of the server's desktop using a plsql script. running the script on the server itself.
There seems to be no methods inside plsql to retrieve it. I need to spool the output of my script to the desktop no matter on which computer/server. So the username and desktop path can be different on other machines.
EDIT:
Currently trying:
dbms_system.get_env('userprofile', desktop);
I can get the path of the desktop but it is not the current user's one. What i get is C:\Documents and Settings\Default User\Desktop
Also have tried:
SQL> host echo %username%
Administrator
Ultimately the path i need is i.e. C:\Documents and Settings\Administrator\Desktop
but the username cannot be hardcoded...
Generally a server can't write directly to a client's desktop / filesystem. The client software requests a stream of data from the server and then the client may write it to the screen, a file....
If the client software isn't being co-operative, I'd look at emailing the results to the user.
[You can get the OS_USER and IP of the client using SYS_CONTEXT and USERENV, but that probably isn't useful, and definitely not if they have come through an app-server.]