需要更新的数据有1100条,我连接的时候一直报错 ORA-12518, TNS:listener could not hand off client connection 根据商品的文章设置了最大连接数为:1200,session为1200*1.1+5=1325,但是tomcat还是报错 ORA-12518, TNS:listener could not hand off client connection 查看最大连接数: - SQL> show parameter processes;
- NAME TYPE VALUE
- ------------------------------------ ----------- ------------------------------
- aq_tm_processes integer 0
- db_writer_processes integer 1
- gcs_server_processes integer 0
- job_queue_processes integer 10
- log_archive_max_processes integer 2
- processes integer 1200
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查看当前的的数据库v$processes 只有356,v$session 352 PMON每5分钟更新listener中的内容,所以listener和数据库不一定是同步的,你现在从数据库上得知有356个连接,并不代表listener里面记录的是356个, 5分钟之内很可能还没有被pmon更新,依然保持着1200所以你报错ORA-12518 而不是ora-00020- SQL> show parameter pga;
-
- NAME TYPE VALUE
- ------------------------------------ ----------- ------------------------------
- pga_aggregate_target big integer 194M
-
- SQL> select * from v$resource_limit;
-
- RESOURCE_NAME CURRENT_UTILIZATION MAX_UTILIZATION INITIAL_ALLOCATION LIMIT_VALUE
- ------------------------------ ------------------- --------------- -------------------- --------------------
- processes 24 366 1200 1200
- sessions 27 362 1325 1325
- enqueue_locks 15 25 15950 15950
- enqueue_resources 15 43 6048 UNLIMITED
- ges_procs 0 0 0 0
- ges_ress 0 0 0 UNLIMITED
- ges_locks 0 0 0 UNLIMITED
- ges_cache_ress 0 0 0 UNLIMITED
- ges_reg_msgs 0 0 0 UNLIMITED
- ges_big_msgs 0 0 0 UNLIMITED
- ges_rsv_msgs 0 0 0 0
- gcs_resources 0 0 0 0
- gcs_shadows 0 0 0 0
- dml_locks 0 51 5828 UNLIMITED
- temporary_table_locks 0 3 UNLIMITED UNLIMITED
- transactions 1 7 1457 UNLIMITED
- branches 0 0 1457 UNLIMITED
- cmtcallbk 0 2 1457 UNLIMITED
- sort_segment_locks 0 3 UNLIMITED UNLIMITED
- max_rollback_segments 11 11 1457 65535
-
- RESOURCE_NAME CURRENT_UTILIZATION MAX_UTILIZATION INITIAL_ALLOCATION LIMIT_VALUE
- ------------------------------ ------------------- --------------- -------------------- --------------------
- max_shared_servers 1 1 UNLIMITED UNLIMITED
- parallel_max_servers 0 0 40 3600
-
- 22 rows selected
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