報錯： Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: An attempt by a client to checkout a Connection has timed out. 數據庫連接超時

解決方法一：

[oracle@data ~]$ sqlplus / as sysdba——連接到數據庫

 

SQL*Plus: Release 11.2.0.4.0 Production on Mon May 8 16:37:56 2017

 

Copyright (c) 1982, 2013, Oracle.  All rights reserved.

 

 

Connected to:

Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

 

SQL> select count(*) from v$process;——當前連接數

 

  COUNT(*)

----------

       128

 

SQL> select value from v$parameter where name = 'processes';——最大連接數

 

VALUE

--------------------------------------------------------------------------------

1000

 

如果最大連接數小魚當前連接數的話，那么修改最大連接數。

alter system set processes = 300 scope = spfile;

修改后重啟數據庫

shutdown immediate;

startup;

exit退出

方法二：

修改配置文件中checkoutTime