Web server failed to start. Port 8080 was already in use.

 

Error creating bean with name 'entityManagerFactory' defined in class path resource

 

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.exception.GenericJDBCException: Unable to open JDBC Connection for DDL execution at

ORA-12505, TNS:listener does not currently know of SID given in connect descriptor

java.sql.SQLException: Listener refused the connection with the following error:

ORA-12505, TNS:listener does not currently know of SID given in connect descriptor

 ^M

        at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:489) ~[ojdbc-6.jar:11.2.0.4.0]^M

        at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:553) ~[ojdbc-6.jar:11.2.0.4.0]^M

        at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:254) ~[ojdbc-6.jar:11.2.0.4.0]^M

        at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32) ~[ojdbc-6.jar:11.2.0.4.0]^M

        at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:528) ~[ojdbc-6.jar:11.2.0.4.0]^M

        at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:136) ~[HikariCP-3.2.0.jar:na]^M

        at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:369) ~[HikariCP-3.2.0.jar:na]^M

        at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:198) ~[HikariCP-3.2.0.jar:na]^M

        at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:467) [HikariCP-3.2.0.jar:na]^M

        at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:541) [HikariCP-3.2.0.jar:na]^M

        at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) [HikariCP-3.2.0.jar:na]^M

        at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) [HikariCP-3.2.0.jar:na]^M

        at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:157) [spring-jdbc-5.1.8.RELEASE.jar:5.1.8.RELEASE]^M

        at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) [spring-jdbc-5.1.8.RELEASE.jar:5.1.8.RELEASE]^M

        at org.springframework.jdbc.datasource.DataSourceUtils.ge

Neo4j

:play start 

:server status

 create( n:person (name : "Kabir" ) ) return n 

match (n) - [r] -> (m) return n,r, m  LIMIT 1

match ( n:person ) return n 

call apoc.load.json('file:/Users/Public/neoq.json') yield value return value limit 10

Elastic search

 Inverted index.  

Leaf query 

Compound query 

Inverted Database 

SQL vs DSL 

Table vs Index 

Document vs row 

Leaf query clause match_all 

Dev tools 

Term query 

git error pathspec did not match

 

git remote update

git fetch

Fatal error compiling: invalid target release: 11

 Install java 11