What is the default username and password for h2 when there's nothing explicit in JDBC?

问题

From a program, I created a H2 database without specifying any user or password in the JDBC URL.

Now I'm trying to access that database with the Script tool. The doc says to use -user sa in the default case. That doesn't work, and it still doesn't work if I either add -password sa or remove -user. What am I missing?

/opt/h2/bin java -cp h2-1.3.161.jar org.h2.tools.Script -url jdbc:h2:/data/jug/jas-coref.h2 -user sa -password sa -script /data/jug/ris-start.sql
Exception in thread "main" org.h2.jdbc.JdbcSQLException: Wrong user name or password [28000-161]
at org.h2.message.DbException.getJdbcSQLException(DbException.java:329)
at org.h2.message.DbException.get(DbException.java:169)
at org.h2.message.DbException.get(DbException.java:146)
at org.h2.message.DbException.get(DbException.java:135)
at org.h2.engine.Engine.validateUserAndPassword(Engine.java:301)
at org.h2.engine.Engine.createSessionAndValidate(Engine.java:146)
at org.h2.engine.Engine.createSession(Engine.java:121)
at org.h2.engine.Engine.createSession(Engine.java:28)
at org.h2.engine.SessionRemote.connectEmbeddedOrServer(SessionRemote.java:285)
at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:110)
at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:94)
at org.h2.Driver.connect(Driver.java:72)
at java.sql.DriverManager.getConnection(DriverManager.java:582)
at java.sql.DriverManager.getConnection(DriverManager.java:185)
at org.h2.tools.Script.execute(Script.java:152)
at org.h2.tools.Script.execute(Script.java:133)
at org.h2.tools.Script.runTool(Script.java:101)
at org.h2.tools.Script.main(Script.java:51)

回答1:

Well, duh, that didn't take long.

The answer is -user "".

回答2:

This might work:

name = "sa"
password = ""

回答3:

In case you got stuck with the default non-blank user when running the client, the full set of parameters will get you past that:

java -cp <path_to_h2>\h2.jar org.h2.tools.Shell -url "jdbc:h2:file:<jdbc_url>" -driver "org.h2.Driver" -user "" -password ""

回答4:

try this:

java -cp h2*.jar org.h2.tools.Script -user "sa" -password "" -url "jdbc:h2:path_to_your_db_file"

来源：https://stackoverflow.com/questions/8695420/what-is-the-default-username-and-password-for-h2-when-theres-nothing-explicit-i