MYSQL service interupted the color of wamp icon turning from orange to green, in menu when i click mysql.log file it says cant find mysql.log.How to fix this? How i can start this service it is really frustrating please help me?
This is a problem of WAMPServers MYSQL finding old my.ini files left on the system by other attempts to install MYSQL manually.
If you try to install MYSQL manually specifically if you use the .msi install or the MYSQL Workbench install that comes with a copy of MYSQL Server, it puts the my.ini into \windows\system32. This is one of the folders that MYSQL searches for its my.ini file, prior to searching its own bin folder.
WAMPServer is very tidy and does not place any of its files outside the \wamp\ folder structure, this is so you can switch versions of MYSQL, which is one of its big benefits, so it i safe to delete these other .my.ini files.
Related
On ubuntu 16.04, when trying to uninstall neo4j I typed:
sudo apt-get purge neo4j*
However, the neo4j folder and all of the data still exist in
/var/lib/neo4j
Secondly, I tried to just install the newest version using:
sudo apt-get install neo4j
and when I checked the version from the commandline I got:
neo4j 3.3.4
This is what I want, but when I start the service and check the version in the web application (http://localhost:7474/browser/), it says that the neo4j version is still 3.1.4.
So, basically I would like to completely remove neo4j, and download the newest version. What is the recommended way of doing this in ubuntu 16.04.
I'm new to neo4j, so I'm sure I'm missing something. Thanks for your help.
I followed the instructions here and they really helped.
Specifically, I deleted my old neo4j folder located in /var/lib/, and in it's place, I put the new version (which was downloaded from the link above and the top folder was renamed "neo4j"). I'm rebuilding my database from scratch, so I wasn't concerned about keeping any of the data I had previously (although maybe you could just copy it over to the new neo4j folder, I don't know).
I started the neo4j service by typing
/var/lib/neo4j/bin/neo4j start
and everything was brand new and seemed to be working. Part of the reason I did a fresh install was because I could not understand how to upgrade based on the documentation. I'll have to look into that more.
I also added the jar file for the corresponding apoc procedures to my plugins folder (/var/lib/neo4j/plugins), and adjusted the neo4j conf file (var/lib/neo4j/conf/neo4j.conf) accordingly:
dbms.security.procedures.unrestricted=apoc.*
and apoc procedures are now being recognized, which is fantastic.
Perhaps there is a better way to have done this, but things seem to be working so far. My database is small right now, so I can build it from scratch easily. Let me know if there is a better way to go about it.
well, I have tried the method above and it did not work. Since the main purpose is to use the verison 4.x.x of neo4j, I tried anothor way to reach the same effect.
At first, download the neo4j-community-4.x.x and put it in someplace where you want, then open the config/neo4j.conf file and change some configuration as follows:
dbms.connector.bolt.listen_address=:7688
dbms.connector.http.listen_address=:7475
After that, start the neo4j by running neo4j start and you shall access the neo4j from browser at localhost:7475, it did work for me. As for the old version, just let it go.
I know this has been asked many times before. But I am getting a:
The mbstring extension is missing. Please check your PHP configuration.
First off I am using WanmpServer3.0.0 64 on a Win7 64 VM.
-I tried editing the php.ini file to give an absolute path to no avail
-made sure that the extension=phpmbstring.dll is uncommented
Another problem is that i noticed that whenever i load a php page it has fatal errors for my mysql commands.
When I use the wampmanager from the tray to open the php.ini file instead of through windows explorer I get:
Cannot find the C:\wamp64\bin\apache\apache2.4.17\bin\php.ini file. Do you want to create a new file?
So now I'm thinking something has gone drastically wrong and would like to uninstall/reinstall Wamp. I attempt to use the mysql console to save my databases before deleting the wamp directory. However when I run a mysqldump -all-databases > all_database.sql it just drops down to an empty line and nothing happens.
mysql console screenshot
If I browse around in the C:\wamp64 directory i find the "data" directory within \bin\mysql where it seems all of my databases reside but not in readable form.
Is there anyway to save my databases??
BTW: This whole setup was working fine previously, so I'm not sure what caused the crash and burn.
Was able to figure it out.
I opened the php.ini file from the PHP bin folder and copied all of the contents into a new php.ini file to reside in the apache bin file.
Now everything works again.
I'm not sure this is how wampserver is supposed to work or what changed to start the problem but it's pseudo-resolved now.
I have an instance in AWS hosting a Neo4j DB.
The version im using is 2.3.1.
I backed it up using "neo4j-backup".
I then zipped the files and uploaded to an external storage.
I wanted to restore the DB to another instance I have using the same version (2.3.1), so I copied the files to the same folder the 1st instance is using.
When I run the neo4j console command it states:
ERROR Neo4j cannot be started, because the database files require upgrading and upgrades are disabled in configuration. Please set 'allow_store_upgrade' to 'true' in your configuration file and try again.
Of course the "allow_store_upgrade" is commented out,
Do I have to do the upgrade when restoring?
How can I find the DB version?
If you're using the same version you shouldn't need to comment it out. Though I don't think it would harm anything if you do (especially if you still have that backup somewhere else).
You should be able to find the version of Neo4j in the CHANGES.txt / README.txt files. It should also output the version in data/graph.db/messages.log when you start up the server. Also if you go to the web console (at http://localhost:7474 by default) it will show you the version.
I have enabled the mbstring extension by removing the ';':
extension=php_mbstring.dll
I am using the correct php.ini file, checked by using phpinfo().
Extension dir specified in php.ini: extension_dir = "c:/wamp/bin/php/php5.5.12/ext/"
Indeed, when I go there, I find 'php_mbstring.dll'
I've restarted wamp multiple times.
What else can be wrong here?
UPDATE:
seems, my whole wamp installation is fd up with respect to mysql:
Your PHP installation appears to be missing the MySQL extension which is required by WordPress.
I do have mysql installed and everything though...module is also enabled etc.
This sounds like you have a rouge php.ini file somewhere and it is loading the wrong one.
There are actually 2 php.ini files in WAMPServer as in most PHP/Apache installations.
One is called \wamp\bin\php\{phpversion}\php.ini and this is only used by the PHP CLI
The other is called \wamp\bin\php\{phpversion}\phpForApache.ini and is used when you are running PHP through Apache.
If you use the wampmanager menus you will edit the one used by Apache/PHP i.e.
wampmanager => PHP -> php.ini
However if you have actually edited the correct php.ini then it is likely you have a rouge version of php.ini somewhere on your system.
Run the phpinfo() link again from the wampmanager homepage and check this parameter which is shown on the first section of the output.
Loaded Configuration File
It should be pointing to \wamp\bin\php\php5.5.12\phpForApache.ini in your case.
If its pointing somewhere else then you probably tried to install PHP and Apache manually before finding WAMPServer and that has left a php.ini file somewhere where Apache is finding it.
Here is the PHP Manual page that defines the search path order used by Apache when looking for a php.ini file. This may help you find and remove any rouge versions of php.ini
Install the gd library also.
check this link http://www.php.net/manual/en/mbstring.installation.php
or
There's a much easier way than recompiling PHP. Just yum install the required mbstring library:
Example: How to install PHP mbstring on CentOS 6.2
yum --enablerepo=remi install php-mbstring
Oh, and don't forget to restart apache afterward.
java database installation directory location & database location
I am trying to get my Java DB setup correctly with NetBeans 6.9.1 to start building databases.
When I right-click on Java DB every option is greyed out except for Properties. There is no sample databases or anything else
when selected, a popup appears requesting
Java DB Installation:
Database Location:
and an info line saying
Please enter the Java DB installation directory.
can anyone tell me where the installation directory (and driver associated with it) is located and how to get past this screen and begin database creation.
Normally JavaDB should be installed as part of the JDK, in a subdirectory called db of the JDK installation directory. However, I just noticed that the JDK6 I have here doesn't have this directory, but the JDK7 installation does. And Netbeans is using the JavaDB installation that came with a Glassifsh appserver I have as well...
You could look for a file called ij (the command line tool that comes with JavaDB, and apparently even on Windows system the shellscript call ij is installed) somewhere on your system, that name is unique enough to avoid false positives.
If you don't find any JavaDB installation, as you can point Netbeans to any Derby install you can find, you could install a fresh copy of Apache Derby, they're a number of versions ahead of the official JavaDB distribution.