Mysql Jdbc Connector 5.1 Download _HOT_
Stefania Gingery
I have been using the MySQL JDBC connector(with MySQL) for quite some time now and have had no problems. This page (click here) contains instructions for connection of Base and MySQL and a link to the JDBC connector. The Class Path is discussed but is nothing more than pointing to (using Add Archive) the connector .jar file.
Signing on was a bit of a pain - mentioned instructions were overly stated. You just need mysql -u root -p for first time sign-in. Then prompted for password from the installation step. Signed in so listed databases:
MariaDB connector was my fault. I was trying to use com.mariadb.jdbc.Driver. org works fine. Also confirmed my suspicions - mariadb-java-client-1.5.7.jar can be located wherever wanted. I keep it in my home directory. Also confirmed MariaDB works with SQL Workbench/J (I use this more than any other). Good news as there is a lack of good tools (my opinion) for it in Linux.
@EasyTrieve Just a correction. Retested 1.2.0 connector and it worked without a problem on Debian with MariaDB. Seems the first time I tried this it failed because there actually was NO Native connector present. I also found my copy of the .otx so I have it if needed.
It looks from other questions (askubuntu, stackoverflow) that it was contained in libmysql-java (which is no longer there), and then moved to libmariadb-java (weird because as far as I know, it's different database - but I found sort of confirmation on debian package description).
I've installed a stock mysql 5.5 installation, and while I can connect to the mysql service via the mysql command, and the service seems to be running, I cannot connect to it through spring+tomcat or from an external jdbc connector.
1) Verify the address mysql is bound to, it's probably 127.0.0.1 (only) which I believe is the default (at least on standard Ubuntu server). You'll have to comment out the bind-addressparameter in my.cnf to bind to all available addresses (you can't choose multiple, it's one or all).
This can also be caused by wrong proxy settings.I had this problem trying to connect via jdbc to a MySQL instance running in a Parallels virtual appliance on my Mac.The jdbc connection uses the system-level network settings and since I was behind a SOCKS proxy I had to set the MySql host as a non-proxy host (e.g., on a Mac you can configure that in Settings->Network->Advanced->Proxies, and finally add the hostname or IP address in the "Bypass proxy settings for these Hosts and Domains").
The JDBC connector allows for reading data from and writing data into any relational databases with a JDBC driver. This document describes how to setup the JDBC connector to run SQL queries against relational databases.
Flink uses the primary key that was defined in DDL when writing data to external databases. The connector operates in upsert mode if the primary key was defined, otherwise, the connector operates in append mode.
The lookup cache is used to improve performance of temporal join the JDBC connector. By default, lookup cache is not enabled, so all the requests are sent to external database.When lookup cache is enabled, each process (i.e. TaskManager) will hold a cache. Flink will lookup the cache first, and only send requests to external database when cache missing, and update cache with the rows returned.The oldest rows in cache will be expired when the cache hit to the max cached rows lookup.partial-cache.max-rows or when the row exceeds the max time to live specified by lookup.partial-cache.expire-after-write or lookup.partial-cache.expire-after-access.The cached rows might not be the latest, users can tune expiration options to a smaller value to have a better fresh data, but this may increase the number of requests send to database. So this is a balance between throughput and correctness.
Ensure that the JDBC URL which you configure in your application server includes the autoReconnect=true, useUnicode=true and characterEncoding=utf8 flags, such that your database URL should look similar to: jdbc:mysql://localhost/bamboo?autoReconnect=true&useUnicode=true&characterEncoding=utf8
I think installing it via system package manager is a better solution, but in your case I miss a command to change PATH variable. So basically you downloaded, extracted the jdbc driver, but it is not visible. Make it visible system wide by changing your env variables, or put this jdbc driver into a directory where you PATH is pointing to.
Strange is that i did it all according to the tutorial, but i think i have forgoten to put the Java connector in all nodes, that includes the cloudera manager VM. Now that i have done the same on the cloudera VM, as on the MySQL VM, and run again the prepare database, i get a different error:
After further troubleshooting and testing different scenarios, i managed to fix the issue. First i replaced the temp user with root user, the mysql hostname with the IP address, but this still did not work. As a solution, on the MySQL machine, i ran the bellow command:
George, l understand WildFly is checking against the jar file for searching the driver when using your approach. So you could also try to change your path to $WILDFLY_HOME/modules/system/layers/base/com/mysql/main/ instead.
CloudBees CD/RO does not include the MySQL JDBC connector. If you plan to perform a CloudBees CD/RO server installation that connects to a MySQL database, you must obtain and install the MySQL JDBC Connector/J 8.
The fully-managed MySQL Source connector for Confluent Cloud can obtain a snapshot ofthe existing data in a MySQL database and then monitor and record all subsequentrow-level changes to that data. The connector supports Avro, JSON Schema,Protobuf, or JSON (schemaless) output data formats. All of the events for eachtable are recorded in a separate Apache Kafka topic. The events can then be easilyconsumed by applications and services. Note that deleted records are notcaptured.
Use this quick start to get up and running with the Confluent Cloud MySQL sourceconnector. The quick start shows how to select the connector and configure it tocapture a snapshot of the existing data in a MySQL database. It then monitorsand records all subsequent row-level changes.
Use the following configuration properties with the fully-managed connector. Forself-managed connector property definitions and other details, see the connectordocs in Self-managed connectors for Confluent Platform.
Add a schema context name. A schema context represents an independent scope in Schema Registry. It is a separate sub-schema tied to topics in different Kafka clusters that share the same Schema Registry instance. If not used, the connector uses the default schema configured for Schema Registry in your Confluent Cloud environment.
Depending on the service environment, certain network access limitations may exist. Make sure the connector can reach your service. Do not include jdbc:xxxx:// in the connection hostname property (e.g. database-1.abc234ec2.us-west.rds.amazonaws.com).
The epoch timestamp used for initial queries that use timestamp criteria. The value -1 sets the initial timestamp to the current time. If not specified, the connector retrieves all data. Once the connector has managed to successfully record a source offset, this property has no effect even if changed to a different value later on.
For an example that shows fully-managed Confluent Cloud connectors in action withConfluent Cloud ksqlDB, see the Cloud ETL Demo.This example also shows how to use Confluent CLI to manage your resources inConfluent Cloud.
For Oracle 9i onwards you should use oracle.jdbc.OracleDriverrather than oracle.jdbc.driver.OracleDriver as Oracle have statedthat oracle.jdbc.driver.OracleDriver is deprecated and supportfor this driver class will be discontinued in the next major release.
In a similar manner to the mysql config above, you will need to define yourDatasource in your Context. Here we define aDatasource called myoracle using the thin driver to connect as user scott,password tiger to the sid called mysid. (Note: with the thin driver this sid isnot the same as the tnsname). The schema used will be the default schema for theuser scott.
When accessing the datasource programmatically, remember to prependjava:/comp/env to your JNDI lookup, as in the following snippet ofcode. Note also that "jdbc/postgres" can be replaced with any value you prefer, providedyou change it in the above resource definition file as well.
Ensure that you have the ocijdbc8.dll or .so in your $PATH or LD_LIBRARY_PATH (possibly in $ORAHOME\bin) and also confirm that the native library can be loaded by a simple test programusing System.loadLibrary("ocijdbc8");
Spring Initializr creates a simple class for the application. The following listing shows the class that Initializr created for this example (in src/main/java/com/example/accessingdatamysql/AccessingDataMysqlApplication.java):
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