Oracle9i到10g,空閑等待事件的變化
2024-08-29 13:36:16
供稿：網友
從Statspack的創建腳本中,我們可以看到從Oracle9i到Oracle10g,空閑等待事件的改變.空閑等待事件在Statspack中,記錄在系統表STATS$IDLE_EVENT中.檢查其創建腳本我們可以找到這些變化.這個腳本位于$ORACLE_HOME/rdbms/admin/spctab.sql 在Oracle9iR2中,空閑等待有:/* ------------------------------------------------------------------------- */create table STATS$IDLE_EVENT
(event varchar2(64) not null
,constraint STATS$IDLE_EVENT_PK PRimary key (event)
using index tablespace &&tablespace_name
storage (initial 100k next 100k pctincrease 0)
) tablespace &&tablespace_name
storage (initial 100k next 100k pctincrease 0) pctfree 5 pctused 40;insert into STATS$IDLE_EVENT (event) values ('smon timer');
insert into STATS$IDLE_EVENT (event) values ('pmon timer');
insert into STATS$IDLE_EVENT (event) values ('rdbms ipc message');
insert into STATS$IDLE_EVENT (event) values ('Null event');
insert into STATS$IDLE_EVENT (event) values ('parallel query dequeue');
insert into STATS$IDLE_EVENT (event) values ('pipe get');
insert into STATS$IDLE_EVENT (event) values ('client message');
insert into STATS$IDLE_EVENT (event) values ('SQL*Net message to client');
insert into STATS$IDLE_EVENT (event) values ('SQL*Net message from client');
insert into STATS$IDLE_EVENT (event) values ('SQL*Net more data from client');
insert into STATS$IDLE_EVENT (event) values ('dispatcher timer');
insert into STATS$IDLE_EVENT (event) values ('virtual circuit status');
insert into STATS$IDLE_EVENT (event) values ('lock manager wait for remote message');
insert into STATS$IDLE_EVENT (event) values ('PX Idle Wait');
insert into STATS$IDLE_EVENT (event) values ('PX Deq: Execution Msg');
insert into STATS$IDLE_EVENT (event) values ('PX Deq: Table Q Normal');
insert into STATS$IDLE_EVENT (event) values ('wakeup time manager');
insert into STATS$IDLE_EVENT (event) values ('slave wait');
insert into STATS$IDLE_EVENT (event) values ('i/o slave wait');
insert into STATS$IDLE_EVENT (event) values ('jobq slave wait');
insert into STATS$IDLE_EVENT (event) values ('null event');
insert into STATS$IDLE_EVENT (event) values ('gcs remote message');
insert into STATS$IDLE_EVENT (event) values ('gcs for action');
insert into STATS$IDLE_EVENT (event) values ('ges remote message');
insert into STATS$IDLE_EVENT (event) values ('queue messages');
commit;create public synonym STATS$IDLE_EVENT for STATS$IDLE_EVENT;/* ------------------------------------------------------------------------- */在Oracle10gR2中,這個數字大大增加:/* ------------------------------------------------------------------------- */
create table STATS$IDLE_EVENT
(event varchar2(64) not null
,constraint STATS$IDLE_EVENT_PK primary key (event)
using index tablespace &&tablespace_name
storage (initial 100k next 100k pctincrease 0)
) tablespace &&tablespace_name
storage (initial 100k next 100k pctincrease 0) pctfree 5 pctused 40;insert into STATS$IDLE_EVENT (event) values ('smon timer');
insert into STATS$IDLE_EVENT (event) values ('pmon timer');
insert into STATS$IDLE_EVENT (event) values ('rdbms ipc message');
insert into STATS$IDLE_EVENT (event) values ('Null event');
insert into STATS$IDLE_EVENT (event) values ('parallel query dequeue');
insert into STATS$IDLE_EVENT (event) values ('pipe get');
insert into STATS$IDLE_EVENT (event) values ('client message');
insert into STATS$IDLE_EVENT (event) values ('SQL*Net message to client');
insert into STATS$IDLE_EVENT (event) values ('SQL*Net message from client');
insert into STATS$IDLE_EVENT (event) values ('SQL*Net more data from client');
insert into STATS$IDLE_EVENT (event) values ('dispatcher timer');
insert into STATS$IDLE_EVENT (event) values ('virtual circuit status');
insert into STATS$IDLE_EVENT (event) values ('lock manager wait for remote message');
insert into STATS$IDLE_EVENT (event) values ('PX Idle Wait');
insert into STATS$IDLE_EVENT (event) values ('PX Deq: Execution Msg');
insert into STATS$IDLE_EVENT (event) values ('PX Deq: Table Q Normal');
insert into STATS$IDLE_EVENT (event) values ('wakeup time manager');
insert into STATS$IDLE_EVENT (event) values ('slave wait');
insert into STATS$IDLE_EVENT (event) values ('i/o slave wait');
insert into STATS$IDLE_EVENT (event) values ('jobq slave wait');
insert into STATS$IDLE_EVENT (event) values ('null event');
insert into STATS$IDLE_EVENT (event) values ('gcs remote message');
insert into STATS$IDLE_EVENT (event) values ('gcs for action');
insert into STATS$IDLE_EVENT (event) values ('ges remote message');
insert into STATS$IDLE_EVENT (event) values ('queue messages');
insert into STATS$IDLE_EVENT (event) values ('wait for unread message on broadcast channel');
insert into STATS$IDLE_EVENT (event) values ('PX Deq Credit: send blkd');
insert into STATS$IDLE_EVENT (event) values ('PX Deq: Execute Reply');
insert into STATS$IDLE_EVENT (event) values ('PX Deq: Signal ACK');
insert into STATS$IDLE_EVENT (event) values ('PX Deque wait');
insert into STATS$IDLE_EVENT (event) values ('PX Deq Credit: need buffer');
insert into STATS$IDLE_EVENT (event) values ('STREAMS apply coord waiting for slave message');
insert into STATS$IDLE_EVENT (event) values ('STREAMS apply slave waiting for coord message');
insert into STATS$IDLE_EVENT (event) values ('Queue Monitor Wait');
insert into STATS$IDLE_EVENT (event) values ('Queue Monitor Slave Wait');
insert into STATS$IDLE_EVENT (event) values ('wakeup event for builder');
insert into STATS$IDLE_EVENT (event) values ('wakeup event for preparer');
insert into STATS$IDLE_EVENT (event) values ('wakeup event for reader');
insert into STATS$IDLE_EVENT (event) values ('wait for activate message');
insert into STATS$IDLE_EVENT (event) values ('PX Deq: Par Recov Execute');
insert into STATS$IDLE_EVENT (event) values ('PX Deq: Table Q Sample');
insert into STATS$IDLE_EVENT (event) values ('STREAMS apply slave idle wait');
insert into STATS$IDLE_EVENT (event) values ('STREAMS capture process filter callback wait for ruleset');
insert into STATS$IDLE_EVENT (event) values ('STREAMS fetch slave waiting for txns');
insert into STATS$IDLE_EVENT (event) values ('STREAMS waiting for subscribers to catch up');
insert into STATS$IDLE_EVENT (event) values ('Queue Monitor Shutdown Wait');
insert into STATS$IDLE_EVENT (event) values ('AQ Proxy Cleanup Wait');
insert into STATS$IDLE_EVENT (event) values ('knlqdeq');
insert into STATS$IDLE_EVENT (event) values ('class slave wait');
insert into STATS$IDLE_EVENT (event) values ('master wait');
insert into STATS$IDLE_EVENT (event) values ('DIAG idle wait');
insert into STATS$IDLE_EVENT (event) values ('ASM background timer');
insert into STATS$IDLE_EVENT (event) values ('KSV master wait');
insert into STATS$IDLE_EVENT (event) values ('EMON idle wait');
insert into STATS$IDLE_EVENT (event) values ('Streams AQ: RAC qmn coordinator idle wait');
insert into STATS$IDLE_EVENT (event) values ('Streams AQ: qmn coordinator idle wait');
insert into STATS$IDLE_EVENT (event) values ('Streams AQ: qmn slave idle wait');
insert into STATS$IDLE_EVENT (event) values ('Streams AQ: waiting for time management or cleanup tasks');
insert into STATS$IDLE_EVENT (event) values ('Streams AQ: waiting for messages in the queue');
insert into STATS$IDLE_EVENT (event) values ('Streams fetch slave: waiting for txns');
insert into STATS$IDLE_EVENT (event) values ('Streams AQ: deallocate messages from Streams Pool');
insert into STATS$IDLE_EVENT (event) values ('Streams AQ: delete acknowledged messages');
insert into STATS$IDLE_EVENT (event) values ('LNS ASYNC archive log');
insert into STATS$IDLE_EVENT (event) values ('LNS ASYNC dest activation');
insert into STATS$IDLE_EVENT (event) values ('LNS ASYNC end of log');
insert into STATS$IDLE_EVENT (event) values ('LogMiner: client waiting for transaction');
insert into STATS$IDLE_EVENT (event) values ('LogMiner: slave waiting for activate message');
insert into STATS$IDLE_EVENT (event) values ('LogMiner: wakeup event for builder');
insert into STATS$IDLE_EVENT (event) values ('LogMiner: wakeup event for preparer');
insert into STATS$IDLE_EVENT (event) values ('LogMiner: wakeup event for reader');
commit;create public synonym STATS$IDLE_EVENT for STATS$IDLE_EVENT;/* ------------------------------------------------------------------------- */假如你注重到的話,很多等待事件在9i中屬于空閑等待,但是未被列入,有的是為了向后兼容,有的則是因為Bug.列在此次,供參考備忘.
