ORA-12516, TNS: listener could not find available

Question

项目启动后几秒种就报该异常。

ORA-12516, TNS: listener could not find available handler with matching protocol stack'

SQL> show parameter processes;

NAME TYPE VALUE

---

aq_tm_processes integer 0
db_writer_processes integer 1
gcs_server_processes integer 0
global_txn_processes integer 1
job_queue_processes integer 1000
log_archive_max_processes integer 4
processes integer 150

我查了下资料，网上说是processes问题，我查了下数据库的processes信息，但不知道如何解决。

Answer 1

通过命令行登陆SQLPLUS修改
sqlplus /nolog
SQL> conn / as sysdba
SQL> show parameter processes;
SQL> alter system set processes=600 scope=spfile;