文档解释
ORA-25238: too many recipients specified for message destination string
Cause: An ENQUEUE was performed with more than 32 recipients for the given destination (address).
Action: Reduce the number of recipients to 32 or less, and retry the call.
ORA-25238：指定消息目标字符串的收件人太多，
官方解释
ORA-25238: too many recipients specified for message destination string
Cause: Too many recipients specified for the message destination string.
Action: Reduce the recipients for the message destination string or set the initialization parameter AQ_TM_PROCESSES to an appropriate value, if AQ_TM_PROCESSES is less than the specified recipients.
常见案例
当我们使用DBMS_AQADM.ENQUEUE API向队列投递消息时，如果设置的消息目标字符串或收件人数量超过了最大允许值，就会报ORA-25238错误。
一般处理方法及步骤
1. 首先查询所在数据库中消息队列中消息目标字符床的最大收件人数量：
SQL> select * from AQ$_DESTINATIONS;
2. 如果收件人数量还是有限制，可以增加数据库参数AQ_TM_PROCESSES可以增大收件人数量：
SQL> alter system set AQ_TM_PROCESSES=50;
