Http://www.blogjava.net/qq13367612/articles/16217.html
The Connection Pool cannot be used after being configured according to the online method. You need to check the following Configuration:
1) Tomcat 5.0 \ conf \ Catalina \ localhost \ ADMIN. xml
<Resource auth = "Container" type = "javax. SQL. datasource" name = "JDBC/easydbcn" Description = "DB connection"/>
2) Tomcat 5.0 \ conf \ Catalina \ localhost \ balancer. xml
<Resource auth = "Container" type = "javax. SQL. datasource" name = "JDBC/easydbcn" Description = "DB connection"/>
3) Tomcat 5.0 \ conf \ Catalina \ localhost \ manager. xml
<Resource auth = "Container" type = "javax. SQL. datasource" name = "JDBC/easydbcn" Description = "DB connection"/>
4) Tomcat 5.0 \ conf \ Catalina \ localhost \ mmrate. xml
<Resource auth = "Container" type = "javax. SQL. datasource" name = "JDBC/easydbcn" Description = "DB connection"/>
5) Tomcat 5.0 \ conf \ Catalina \ localhost \ Root. xml
<Resource auth = "Container" type = "javax. SQL. datasource" name = "JDBC/easydbcn" Description = "DB connection"/>
6) Tomcat 5.0 \ conf \ Catalina \ localhost \ WebDAV. xml
<Resource auth = "Container" type = "javax. SQL. datasource" name = "JDBC/easydbcn" Description = "DB connection"/>
7) Tomcat 5.0 \ conf \ Server. xml
<Resource type = "javax. SQL. datasource" name = "JDBC/easydbcn"/>
<Resourceparams name = "JDBC/easydbcn">
<Parameter>
<Name> maxwait </Name>
<Value> 5000 </value>
</Parameter>
<Parameter>
<Name> maxactive </Name>
<Value> 10 </value>
</Parameter>
<Parameter>
<Name> password </Name>
<Value> easysoft </value>
</Parameter>
<Parameter>
<Name> URL </Name>
<Value> JDBC: Sybase: TDS: 192.168.1.1: 5000/easy </value>
</Parameter>
<Parameter>
<Name> driverclassname </Name>
<Value> com. Sybase. jdbc2.jdbc. sybdriver </value>
</Parameter>
<Parameter>
<Name> maxidle </Name>
<Value> 5 </value>
</Parameter>
<Parameter>
<Name> username </Name>
<Value> easy_dbo </value>
</Parameter>
</Resourceparams>
8) Tomcat 5.0 \ conf \ WEB. xml
<Resource-ref>
<Description> dB connection </description>
<Res-ref-Name> JDBC/easydbcn </RES-ref-Name>
<Res-type> javax. SQL. datasource </RES-type>
<Res-auth> container </RES-auth>
</Resource-ref>
9) Tomcat 5.0 \ webapps \ easyrate \ WEB-INF \ WEB. xml
<Resource-ref>
<Description> dB connection </description>
<Res-ref-Name> JDBC/easydbcn </RES-ref-Name>
<Res-type> javax. SQL. datasource </RES-type>
<Res-auth> container </RES-auth>
</Resource-ref>