ORA-00020: maximum number of processes (2000) exceeded
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研发反应测试库连不上,看下告警日志,有以下报错:
ORA-00020: maximum number of processes (2000) exceeded
这种问题之前也遇到过,就是 连接数达到了processes 的限制值 2000 了。
像这种值在视图中都有记录的
16:21:55 sys@ORAUAT2>select * from V$RESOURCE_LIMIT;RESOURCE_NAME CURRENT_UTILIZATION MAX_UTILIZATION INITIAL_ALLOCATION LIMIT_VALUE------------------------------ ------------------- --------------- -------------------- --------------------processes 1352 2000 2000 2000sessions 1370 2770 3024 3024enqueue_locks 1485 2741 38500 38500
从视图中看确实达到了限制值。
另外还有一个有趣的视图,其中记录了表,会话等最高值信息
16:40:10 sys@ORAUAT2>select name, HIGHWATER from dba_high_water_mark_statistics;NAME HIGHWATER---------------------------------------------------------------- ----------USER_TABLES 8616SEGMENT_SIZE 2.4548E+10PART_TABLES 1048575PART_INDEXES 1048575USER_INDEXES 25158SESSIONS 1970DB_SIZE 2.1031E+12DATAFILES 157TABLESPACES 52CPU_COUNT 48QUERY_LENGTH 197962SQL_NCHAR_COLUMNS 7406INSTANCES 1USER_MV 4ACTIVE_SESSIONS 72.0350693HWM_DBMS_SCHEDULER 249EXADATA_DISKS
16:47:18 sys@ORAUAT2>select TABLE_NAME from dict where table_name like '%RESOURCE%';TABLE_NAME------------------------------DBA_HIST_RESOURCE_LIMITDBA_RESOURCE_INCARNATIONSUSER_RESOURCE_LIMITS
0 0
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