[Oracle] IO 오류: Invalid number format for port number

문제 상황

MySQL에서 Oracle로 변경하는 중에 발생한 에러.

에러 코드

java.sql.SQLRecoverableException: IO 오류: Invalid number format for port number
	at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:489)
	at oracle.jdbc.driver.PhysicalConnection.(PhysicalConnection.java:553)
	at oracle.jdbc.driver.T4CConnection.(T4CConnection.java:254)
	at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
	at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:528)
	....
Caused by: oracle.net.ns.NetException: Invalid number format for port number
	at oracle.net.resolver.HostnameNamingAdapter.resolve(HostnameNamingAdapter.java:187)
	at oracle.net.resolver.NameResolver.resolveName(NameResolver.java:133)
	at oracle.net.resolver.AddrResolution.resolveAndExecute(AddrResolution.java:431)
	at oracle.net.ns.NSProtocol.establishConnection(NSProtocol.java:693)
	at oracle.net.ns.NSProtocol.connect(NSProtocol.java:251)
	at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:1140)
	at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:340)
	... 83 more

해결 방안

텍스트 하나를 잘못 적어서 수정.

database.driver=oracle.jdbc.driver.OracleDriver
database.url=jdbc:oracle:thin:@//127.0.0.0:1521:testdb

를 아래로 수정.

잘 보면 포트 번호 뒤에 " : "가 " / "으로 변경되어 있음. 저 값 바꾸니 정상 동작했다.

database.driver=oracle.jdbc.driver.OracleDriver
database.url=jdbc:oracle:thin:@//127.0.0.0:1521/testdb