mysql Too many connecti ons

29:44,765 WARN [com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(Ba
sicResourcePool.java:1841)] - <com.mchange.v2.resourcepool.BasicResourcePool$Acq
uireTask@cab56 -- Acquisition Attempt Failed!!! Clearing pending acquires. While
trying to acquire a needed new resource, we failed to succeed more than the max
imum number of allowed acquisition attempts (30). Last acquisition attempt excep
tion: >
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data sourc
e rejected establishment of connection,  message from server: "Too many connecti
ons"