My question is very simple.. I obviously have a folder containing a derby database :
- 3 folders (log - seg0 - tmp)
- db.lck
- service.properties
in seg0 : a list of dat files
How to I use it ? how do I integrate it in Netbeans ? how my application can use the database ?
I imagine it has to be put on a server ? what server ?
Thank you for your help
The presence of the db.lck file indicates that the database was not shut down properly the last time it was used, which means there is a non-zero probability that the database is damaged.
Still ... nothing wrong in trying to access it.
Simply install a copy of Derby, bring up the IJ tool, and type
connect 'jdbc:derby:/full/path/to/the/database/folder';
You can get Derby from http://db.apache.org/derby.
If you don't know how to run 'ij', look in the Derby documentation for the Derby tutorial, and work through it; then go back to trying to open your database.
Related
I was trying to setup Vertica Connection in DBeaver. But getting following error :
error message
Do you have the Vertica JDBC driver?
Try to find a file named vertica-jdbc-10.1.1-0.jar (or similar, mind the version), on your hard drive.
If you don't have it, then go here to download it:
https://www.vertica.com/client_drivers/11.0.x/11.0.0-0/vertica-jdbc-11.0.0-0.jar
Then, you will have to store it in a safe directory, and tell DBeaver where to find it.
For how to tell DBeaver that, check DBeaver's documentation
I am running my web application WAR in WebLogic 12c. I configured my JNDI JDBC Data Source using Data Source option at admin console. Everything was working fine until I removed some privileges from stored procedures. After that I am getting error ORA-04068: existing state of packages string has been discarded.
But nothing is able to solve the issue. Could any one please suggest me any resolution to the above issue ? Any help would be appreciated.
1. Clear the statement cache in webLogic
2. Reset the connection in webLogic
3. Set Statement Cache Size to 0
4. Finally restart the server using command line
5. Deleted the conflicting package
You may be able to use the SERIALLY_REUSABLE pragma on the package spec/body to limit this problem. This may incur a bit of a performance hit. Also, you cannot use this method if the package has variables whose state needs to be retained between different sessions calling the package.
More details here.
Finally I am able to solve this issue. It was because of timestamp mismatch error in Oracle Database. Resolution found here
my server had been attacked by a ransomware .rapid and all my data had been encrypted , luckily for me the oracle home folder is not encrypted - yet - and most of the files including the datafiles folder and tablespaces are still accessible
Can any One please tell me how to recover my database objects?
no backup is available , only oracle home folder -most of it-
EDIT :
The System is broken , I am trying to know witch files to collect and copy that will enable me to recover my database files from another system
when I try to log into sqlplus throw cmd I get the following error :
'sqlplus' is not recognized as an internal or external command ,
operable program or batch file.
Blockquote
EDIT :
FILES THAT I STILL HAVE ACCESS TO - NOT ENCRYPTED -
Okay. If you can find an init.ora file on your server, that's the PFILE - initialization parameter file - that's the last thing missing to easily copy your database to a new server. If you can't find it, that's ok - it'll just be a little harder. As long as you have the datafiles, you can eventually get your database back.
Basically, you'll want to follow steps 2-8 in the link I posted. You can also find some helpful info in the Oracle guide to manually creating a database in Windows. I'll walk you through them.
Shutdown your old database (if it's still running). This will make sure your datafiles are in a consistent state for copying. Probably stopping the Windows Service would be the easiest way to do that if you can't access sqlplus.
Copy the data to your new server. I'm assuming it'll be in the same location, D:\app\Administrator\oradata\VTC\
Make a copy of the control file CONTROL01.CTL and name it create_db.sql (EDIT: I was assuming that this was a backup to trace ascii version of the control file, but it sounds like this is the binary file)
Edit create_db.sql. Where it says CREATE CONTROLFILE REUSE DATABASE "MY_DB" NORESETLOGS, change it to CREATE CONTROLFILE SET DATABASE "MY_DB" RESETLOGS. Make note of whatever "MY_DB" is - this is your database name. Most people make it the same as the SID. I normally do RESETLOGS which throws out the old redo logs, but you could try keeping them with NORESETLOGS if that works for you.
Remove or comment out the lines that say RECOVER DATABASE and ALTER DATABASE OPEN;. Make sure the paths for the datafiles and logfiles look correct. Save the file.
If you couldn't find your init.ora to copy, I think this very minimal one will work for you, although you'll want to fix your memory settings later. Create it in the same folder.
DB_NAME=MY_DB
INSTANCE_NAME=MY_DB
SERVICE_NAMES=MY_DB
CONTROL_FILES = ("D:\app\Administrator\oradata\VTC\CONTROL01.CTL")
DB_FILES=100
Create an Oracle Database Windows Service. Afterwards check Services to make sure it's running.
oradim -NEW -SID MY_DB -STARTMODE manual -PFILE "D:\app\Administrator\oradata\VTC\init.ora"
Log in to your new Oracle instance as SYSDBA. There's no database yet.
cd D:\app\Administrator\oradata\VTC\
set ORACLE_SID=MY_DB
sqlplus / as sysdba
Create the database, using the control file from the old server as a script.
#create_db.sql
If everything comes back OK, run:
alter database open
Hi I have problem with idle instance
When I trying:
sqlplus / as sysdba
I get result: Connected to an idle instance.
And when I try startup I get:
ORA-01078: failure in processing system parameters
ORA-01565 error in identifying file 'C:\oraclexe\app\oracle\product\11.2.0\server\dbs/spfileXE.ora
ORA-27041: unable to open file
ORA-04002: unable to open file
O/S-Error: (OS 2) File not found;
My system is Windows 8. Do you any idea how to solve it?
SOLUTION:
I have to startup using command:
startup pfile='<path to file>/init.ora'
and change all paths in init.ora where was
<ORACLE_BASE>
Thx for help
I've got that pain too.
To install Oracle XE you should login as local admin - NOT domain account.
This https://community.oracle.com/thread/2361291 made me happy :)
I just had the same problem.
You just have to start the setup to install the database as administrator.
After this and a reboot everything works fine.
I highly recommend reading the Oracle® Database 2 Day DBA manual, or hire a dba.
You are missing the init{ORACLE_SID}.ora, the parameter file which contains things like database name, controlfile locations. the init{ORACLE_SID}.ora is a text file that is edited with a regular text editor. This file can be converted to a spfile{ORACLE_SID}.ora that can be edited using a database instance. This is also a dynamic parameter file meaning that when you change parameters in an instance, the parameters can also be recorded in the spfile for later reuse.
For now add the db_name and control_files. Make sure that the contol_files parameter points to an existing controlfile[s]. If there are no existing control_file[s], just trash the initXE.ora, spfileXE.ora and start dbca, the Database Configuration Assistant and using that create a new database.
This question already has answers here:
How to use SQLDeveloper to connect to embedded Derby database
(4 answers)
Closed 5 years ago.
I've been trying to connect to an Apache Derby/JavaDB embedded database using Oracle SQL Developer but without much success.
I've tried to create a new connection using the following JDBC URL:
jdbc:derby:/path/to/file/database.derby;create=true
which resulted in an error:
Status : Failure -Test failed: Invalid connection info specified. Verify the URL format for the specified driver.
Previously I've added derby.jar through Tools > Preferences > Database > Third Party JDBC Drivers.
Given that JavaDB is now a supported Oracle product I'm not understanding why is not better integrated with its development tools.
Any guidance will be much appreciated. Thanks in advance.
Your derby url seems wrong. You need to point the url to the directory of the database, not the database itself.
jdbc:derby:/path/to/file/;create=true
Have a look at the examples.
jdbc:derby:/reference/phrases/french
Open a connection to the database /reference/phrases/french.
On a UNIX system, this would be the path of the directory. On a
Windows system, the path would be C:\reference\phrases\french if the
current drive were C. If a jar file storing databases were in the
user's classpath, this could also be a path within the jar file.
From the docs:
The connection URL syntax is as follows:
jdbc:derby:[subsubprotocol:][databaseName][;attribute=value]
Subsubprotocol, which is not typically specified, determines how Derby
looks for a database: in a directory, in memory, in a class path, or
in a jar file. Subsubprotocol is one of the following:
directory: The default. Specify this explicitly only to distinguish a database that might be ambiguous with one on the class
path.
try connecting to the Derby DB using the Eclipse Java EE IDE for Web Developers instead of Oracle SQL Developer. In the latest versions it is has the full integrations.