select CALL_ID from CALL_REGISTER where SCHEDULED_MODALITY='USMF' and DEP_AREA='科' and SCHEDULED_DTTM='20220111102548' and CALL_ROOM='室' and CHECK_STATUS <> '已删除'

select count(*) LOGGED_COUNT from licensesession where user_key = :user_key and (TRUNC((sysdate-LAST_ACCESS_TIME)*24*60*60)) < :interval and session_id = :session_id and session_type = 'L' and licenseproduct_code = :licenseproduct_code

这些语句看看SQL的执行计划。

看下给数据库分配的PGA有多大，连接不上时数据库的连接数有多少？调低未活动的用户断开会话的时间。