anyone can help me, how to fix this
when i open localhost/phpmyadmin/
it says
Error
MySQL said: Documentation
#2002 - No connection could be made because the target machine actively refused it.
The server is not responding (or the local server's socket is not correctly configured).
Connection for controluser as defined in your configuration failed.
when i run mysql_start.bat, it says
Diese Eingabeforderung nicht waehrend des Running beenden
Please dont close Window while MySQL is running
MySQL is trying to start
Please wait ...
MySQL is starting with mysql\bin\my.ini (console)
MySQL konnte nicht gestartet werden
MySQL could not be started
Press any key to continue . . .
i tried to fix it with solution that provided in google before
but it still doesn't work
If you view the file mysql_start.bat it has a generic error that is printed irrespective of the MySQL error.
Try to open a command prompt and type the below command which is available in the mysql_start.bat file.
mysql\bin\mysqld --defaults-file=mysql\my.ini --standalone --console
Running the exact command in the prompt will show you the MySQL error. In my case it was the my.ini was missing and I had to rename one of the sample files and put it to the location.
Related
Recently installed Neo4J on a Raspberry Pi on a docker container (portainer). Everything seems to working fine. I can open a terminal in Portainer and run commands. I can see there are two DB and I can even run Cypher commands (cut and pasted the Movie entries). But I'm not able to run any commands using the browser. I seem to be able to connect the browser (http://localhost:7474/browser/) and see the ":play movie-graph" run. But when I try to run the query to enter movie data, I get the following error: "ERROR: Neo.DatabaseError.General.UnknownError" Running :sysinfo doesn't return any results. Also the cursor is $ as opposed to a DB name. And don't see any databases in the Database menu on the left.
Again, I'm able to run queries using Cypher Shell through a Portainer terminal.
Here are the container details:
IMAGE neo4j:latest#sha256:b91a4a85afb0cec9892522436bbbcb20f1d6d026c8c24cafcbcc4e27b5c8b68d
CMD neo4j
ENTRYPOINT tini -g -- /startup/docker-entrypoint.sh
ENV
JAVA_HOME /usr/local/openjdk-11
JAVA_VERSION 11.0.15
LANG C.UTF-8
NEO4J_AUTH none
NEO4J_dbms_connector_bolt_advertised__address localhost:7687
NEO4J_dbms_connector_http_advertised__address localhost:7474
NEO4J_dbms_connector_https_advertised__address localhost:7473
NEO4J_EDITION community
NEO4J_HOME /var/lib/neo4j
NEO4J_SHA256 34c8ce7edc2ab9f63a204f74f37621cac3427f12b0aef4c6ef47eaf4c2b90d66
NEO4J_TARBALL neo4j-community-4.4.8-unix.tar.gz
PATH /var/lib/neo4j/bin:/usr/local/openjdk-11/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
I'm sure it is something silly I'm missing, but reading multiple forum comments haven't help. Any help would be appreciated.
Thank you.
SJ
When you load the neo4jbrowser from your internet browser at:
http://localhost:7474/browser
, you need to connect to the bolt advertised address of your neo4j server at:
bolt://localhost:7687
Q1. What versions are we using?
Ans.
Python 3.6.12
OS : CentOS 7 64-bit
DB : Oracle 18c
Django 2.2
cx_Oracle : 8.1.0
Q2. Describe the problem
Ans. While running server with "python3 manage.py runserver"
application is able to contact Oracle DB and show the Django Administration page and login also works.
But when we access the application using the Apache (HTTPD) based URL over secure SSL port, we do see the Django page and the admin page as well but Login to Admin page with Internal server error.
In the logs, we see
"django.db.utils.DatabaseError: Error while trying to retrieve text for error ORA-01804"
cx_oracle is otherwise able to connect to the database properly, another application is also using the same database behind the same httpd proxy and works fine
Q3. Show the directory listing where your Oracle Client libraries are installed (e.g. the Instant Client directory). Is it 64-bit or 32-bit?
Ans. 64-bit
Q4. Show what the PATH environment variable (on Windows) or LD_LIBRARY_PATH (on Linux) is set to?
LD_LIBRARY_PATH=/srv/vol/db/oracle/product/18.0.0/dbhome_1/lib:/lib:/usr/lib
PATH=$ORACLE_HOME/bin:/srv/vol/db/oracle/product/18.0.0/dbhome_1/lib:$PATH
Q5. Show any Oracle environment variables set (e.g. ORACLE_HOME, ORACLE_BASE).
ORACLE_HOME=/srv/vol/db/oracle/product/18.0.0/dbhome_1
TNS_ADMIN=$ORACLE_HOME/network/admin
NLS_LANG=AMERICAN_AMERICA.AL32UTF8
ORACLE_BASE=/srv/vol/db/oracle
CLASSPATH=$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib:$ORACLE_HOME/lib
Any suggestions/help is highly appreciated.
Thank you
I found the problem
So I just removed all the variable declarations from /etc/sysconfig/httpd and checked, the application was still able to access the lib files, so these were now redundant.
Then undid all variable declarations done earlier in .localsh and .localrc files for the os users. To start from scratch, and go step by step to see where it breaks.
So now, cx_Oracle was looking for the lib files in wrong directory
$ORACLE_HOME/client_1/lib
instead of
$ORACLE_HOME/lib
DPI-1047: Cannot locate a 64-bit Oracle Client library: "$ORACLE_HOME/client_1/lib/libclntsh.so: cannot open shared object file: No such file or directory". See https://cx-oracle.readthedocs.io/en/latest/user_guide/installation.html for help
I did not have any subfolder named "client_1" inside dbhome_1
so I just created a symlink client_1 that points to dbhome_1 (still unsure on this, but at least it works :) )
So, now, this error was gone but now again ORA-01804 was coming. 😑
I had read somewhere that this error can be fixed by adding "libociei.so" but I did not have one on my instance, so I generated it using these commands:-
mkdir -p $ORACLE_HOME/rdbms/install/instantclient/light
cd $ORACLE_HOME/rdbms/lib
make -f ins_rdbms.mk igenliboci
Then I just moved this libociei.so file from
$ORACLE_HOME/instantclient to $ORACLE_HOME/lib
Now there was a new error (so.. progress 😉 ):
ORA-12546 - TNS Permission Denied.
This was easy to solve 😀
I used this command to address this :-
setsebool -P httpd_can_network_connect on
And...... That was all! It worked.
I am using MobaXterm v20.6 build 4532 to connect to a Linux machine over SSH. I am trying to open a file in the Scp panel on the left by double-clicking on it, and this brings up a dialog box saying "Please wait while opening file...", and it gets stuck here forever.
Interestingly enough, this works on some servers but not others. Is there some way to debug this? Is there a log file which shows the scp command that MobaXterm is trying to run?
I figured out the problem. I was able to enable logging by running "MobaXterm.exe -log". This left a log in C:\Users\jdoe\Documents\MobaXterm\MobaXterm.log. This was printed when I tried to open a file:
[11:31.39.305] (SSH-Browser) Starting MobaSCP(2, OpenFile, /local/jdoe/.bashrc, C:\Users\JDOE\DOCUME~1\MobaXterm\slash\RemoteFiles\526608_2_0\.bashrc)
[11:31.39.307] BEGIN ShellExecuteA(C:\Users\JDOE\DOCUME~1\MobaXterm\slash\bin\MobaSCPOpenFile.exe, -v -batch -scp -load "TERM5266082" mobauser#mobaserver:"/local/jdoe/.bashrc" "C:\Users\JDOE\DOCUME~1\MobaXterm\slash\RemoteFiles\526608_2_0\.bashrc")
[11:31.39.308] ShellExecuteA: ShellExecuteEx succeeded.
[11:31.39.308] END ShellExecuteA(C:\Users\JDOE\DOCUME~1\MobaXterm\slash\bin\MobaSCPOpenFile.exe, -v -batch -scp -load "TERM5266082" mobauser#mobaserver:"/local/jdoe/.bashrc" "C:\Users\JDOE\DOCUME~1\MobaXterm\slash\RemoteFiles\526608_2_0\.bashrc")
[11:31.39.405] [MobaSCP2] Multiplex=0
[11:31.39.406] [MobaSCP2] HOSTNAME: 192.168.1.104
[11:31.39.406] [MobaSCP2] USERNAME: jdoe
[11:31.39.724] Received verification request for hostkey: ssh-ed25519#22:192.168.1.104
[11:31.39.724] Hostkey corresponds to the cached one
[11:31.39.748] WMNewTab2: Saving sshkey and NOT CONNECTING SSH-Browser...
[11:31.39.748] BEGIN SavePassword
[11:31.39.749] END SavePassword
[11:31.39.845] [MobaSCP2] Using SCP1
[11:31.39.845] [MobaSCP2] Connected to 192.168.1.104
[11:31.39.845] [MobaSCP2] Protocol error: Expected control record
Looks like the "Expected control record" error was being caused by my .bashrc printing output. Apparently this confuses SCP: https://documentation.help/PuTTY/faq-pscp-protocol.html
I was able to fix this by changing my .bashrc to not print anything.
I'm trying to connect to an Oracle Cluster using Flyway-Commandline. It works fine from DOS using:
# Ommitting the other params for brevity: jarDir, locations, user, password, driver etc
flyway clean -url="jdbc:oracle:thin:#(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST = my_host_1)(PORT=8020))(ADDRESS=(PROTOCOL=TCP)(HOST = my_host_2)(PORT=8020))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=MY_SERVICE_NAME)))"
But when I do the same on linux I get an error:
ERROR: FlywayException: Unable to obtain Jdbc connection from DataSource
ERROR: Occured in com.googlecode.flyway.core.util.jdbc.JdbcUtils.openConnection() at line 56
ERROR: Caused by oracle.net.ns.NetException: NL Exception was generated
ERROR: Occured in oracle.net.resolver.AddrResolution.resolveAddrTree() at line 626
It works fine on both platforms if I connect directly to one of the hosts directly using:
flyway clean -url=jdbc:oracle:thin:#my_host_1:8020/MY_SERVICE_NAME
The problem is that when one host in the cluster goes down, which happens regularly, this stops working.
This sounds like a problem with your Linux environment and not with Flyway itself.
I intended to implement a chat feature in my rails application. After a brief backup work I found JUGGERNAUT is the best option. By going to through http://juggernaut.rubyforge.org/
I have successfully implemented the juggernaut in my application.
Presently I'm all set to implement chat feature and after a vigorous surfing over web I couldn't get good tutorial to implement it but I found the some part of implementation at http://www.golygon.com/2010/12/private-chat-room-in-ruby-on-rails-3-0/. I decided to follow it but initially to implement the tutorial we need to have redis server and node.js in our system. I installed both in my environment.
But I'm facing the following problem as follows:
If I try
redis-server, I'm getting the following error
[11440] 08 Aug 10:08:16 # Warning: no config file specified, using the default config. In order to specify a config file use 'redis-server /path/to/redis.conf'
[11440] 08 Aug 10:08:16 # Opening port: bind: Address already in use
and as per the tutorial
if I try
sudo node server.js, I'm getting the following error
[sudo] password for re5:
node.js:63
throw e;
^
Error: ENOENT, No such file or directory '/home/re5/Documents/task17/server.js'
at Object.openSync (fs:153:18)
at Object.readFileSync (fs:94:15)
at Module._loadScriptSync (node.js:468:39)
at Module.loadSync (node.js:338:12)
at Object.runMain (node.js:522:24)
at Array.<anonymous> (node.js:756:12)
at EventEmitter._tickCallback (node.js:55:22)
at node.js:773:9
As I don't know much about the redis and node I'm unable to figure out what was the problem regarding to this errors.
I'm stuck and couldn't go further as I'm not sure whether this two are configured perfectly or not.
currently I'm using rails 3.0.7 and ruby 1.8.7
Can any one help me out.
Well your first error is quite simple to understand.
[11440] 08 Aug 10:08:16 # Opening port: bind: Address already in use
This means that there is aready a server bound to that port and using it as a server, this can happen if you have other applications/servers running or if you try to have mutiple instances of the server run at one time. To fix this you need to stop the process and then start it back up again. You can usually do this by closing all of your terminal windows or using your operating systems process manager to terminate the process, if those methods dont work for you try shutting your computer down and starting it back up. If you are still unable to start the Redis server after this then there are some more steps we can take.
The next error is due to node.js not being able to find a file that it needs. Reinstalling node.js should fix this problem for you.
Let me know if this fixes your problem or if you need more help.