spring 访问db2 数据库时，一开始没问题，最近会经常出现这个错误 ERRORCODE=-4499, SQLSTATE=08001

Caused by: com.ibm.db2.jcc.b.gm: [jcc][t4][2030][11211][3.50.152] 在对连接的底层 socket、socket input stream 或 socket output stream 执行操作期间
发生通信错误。错误位置：Reply.fill()。消息：数据不足。 ERRORCODE=-4499, SQLSTATE=08001
at com.ibm.db2.jcc.b.wc.a(wc.java:283)
at com.ibm.db2.jcc.t4.a.a(a.java:352)
at com.ibm.db2.jcc.t4.ab.b(ab.java:219)
at com.ibm.db2.jcc.t4.ab.c(ab.java:237)
at com.ibm.db2.jcc.t4.ab.c(ab.java:348)
at com.ibm.db2.jcc.t4.ab.v(ab.java:1133)
at com.ibm.db2.jcc.t4.bb.a(bb.java:41)
at com.ibm.db2.jcc.t4.b.i(b.java:1357)
at com.ibm.db2.jcc.t4.b.b(b.java:1249)
at com.ibm.db2.jcc.t4.b.s(b.java:1020)
at com.ibm.db2.jcc.t4.b.c(b.java:632)
at com.ibm.db2.jcc.t4.b.b(b.java:618)
at com.ibm.db2.jcc.t4.b.a(b.java:360)
at com.ibm.db2.jcc.t4.b.(b.java:298)
at com.ibm.db2.jcc.DB2Driver.connect(DB2Driver.java:193)
at java.sql.DriverManager.getConnection(DriverManager.java:579)
at java.sql.DriverManager.getConnection(DriverManager.java:190)
at org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriverManager(DriverManagerDataSource.java:173)
at org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriver(DriverManagerDataSource.java:164)
at org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnectionFromDriver(AbstractDriverBasedDataSource.java:149)
at org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnection(AbstractDriverBasedDataSource.java:119)
at org.springframework.jdbc.datasource.lookup.AbstractRoutingDataSource.getConnection(AbstractRoutingDataSource.java:148)
at org.apache.openjpa.lib.jdbc.DelegatingDataSource.getConnection(DelegatingDataSource.java:110)
at org.apache.openjpa.lib.jdbc.DecoratingDataSource.getConnection(DecoratingDataSource.java:87)
at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.connectInternal(JDBCStoreManager.java:979)
at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.connect(JDBCStoreManager.java:964)
... 61 more