There was an unexpected error encountered when setting the new admin information. Please check your error logs and try to remedy the problem

I tried to install openfire over my system. but I encounter error like these:

rototype

java.sql.SQLException: No suitable driver found for jdbc:hsqldb:C:\Program Files\Openfire\embedded-db\openfire

at java.sql.DriverManager.getConnection(Unknown Source)

at java.sql.DriverManager.getConnection(Unknown Source)

at org.logicalcobwebs.proxool.DefaultConnectionBuilder.buildConnection(DefaultConn ectionBuilder.java:39)

at org.logicalcobwebs.proxool.Prototyper.buildConnection(Prototyper.java:159)

at org.logicalcobwebs.proxool.Prototyper.sweep(Prototyper.java:102)

at org.logicalcobwebs.proxool.PrototyperThread.run(PrototyperThread.java:44)

2013.12.31 12:39:50 org.jivesoftware.util.log.util.CommonsLogFactory - Prototype

java.sql.SQLException: No suitable driver found for jdbc:hsqldb:C:\Program Files\Openfire\embedded-db\openfire

at java.sql.DriverManager.getConnection(Unknown Source)

at java.sql.DriverManager.getConnection(Unknown Source)

at org.logicalcobwebs.proxool.DefaultConnectionBuilder.buildConnection(DefaultConn ectionBuilder.java:39)

at org.logicalcobwebs.proxool.Prototyper.buildConnection(Prototyper.java:159)

at org.logicalcobwebs.proxool.Prototyper.sweep(Prototyper.java:102)

at org.logicalcobwebs.proxool.PrototyperThread.run(PrototyperThread.java:44)

2013.12.31 12:40:30 org.jivesoftware.util.log.util.CommonsLogFactory - Prototype

java.sql.SQLException: No suitable driver found for jdbc:hsqldb:C:\Program Files\Openfire\embedded-db\openfire

at java.sql.DriverManager.getConnection(Unknown Source)

at java.sql.DriverManager.getConnection(Unknown Source)

at org.logicalcobwebs.proxool.DefaultConnectionBuilder.buildConnection(DefaultConn ectionBuilder.java:39)

at org.logicalcobwebs.proxool.Prototyper.buildConnection(Prototyper.java:159)

at org.logicalcobwebs.proxool.Prototyper.sweep(Prototyper.java:102)

at org.logicalcobwebs.proxool.PrototyperThread.run(PrototyperThread.java:44)

2013.12.31 12:41:10 org.jivesoftware.util.log.util.CommonsLogFacto

I can login right now,but how can I set up the mysql connection? Using embedded database is not good in the future.

Hello,my friends. What the typical hardware configuration of your server? I set it up and only 3-4 client connection eat up all the resource(memory,CPU power) of the server? How to reduce that? Is that OK to run openfire with apache server hosting the website?