解決方案

??1.查看進程數(shù)

?SQL>?show parameter proce

NAME?????????????????????????????????TYPE????????VALUE
------------------------------------ ----------- --------------
aq_tm_processes??????????????????????integer?????1
db_writer_processes??????????????????integer?????1
job_queue_processes??????????????????integer?????10
log_archive_max_processes????????????integer?????2
processes????????????????????????????integer?????150

2.修改processes

SQL>?alter system set processes=300 scope=spfile;

系統(tǒng)已更改。

SQL> show?parameter proce

NAME?????????????????????????????????TYPE????????VALUE
------------------------------------ ----------- -------------
aq_tm_processes??????????????????????integer?????1
db_writer_processes??????????????????integer?????1
job_queue_processes??????????????????integer?????10
log_archive_max_processes????????????integer?????2
processes????????????????????????????integer?????150
SQL> shutdown immediate
數(shù)據(jù)庫已經(jīng)關(guān)閉。
已經(jīng)卸載數(shù)據(jù)庫。
ORACLE 例程已經(jīng)關(guān)閉。
SQL> startup
ORACLE 例程已經(jīng)啟動。

Total System Global Area??530128356 bytes
Fixed Size???????????????????454116 bytes
Variable Size?????????????503316480 bytes
Database Buffers???????????25165824 bytes
Redo Buffers????????????????1191936 bytes
數(shù)據(jù)庫裝載完畢。
數(shù)據(jù)庫已經(jīng)打開。
SQL> show parameter proce

NAME?????????????????????????????????TYPE????????VALUE
------------------------------------ ----------- -------------
aq_tm_processes??????????????????????integer?????1
db_writer_processes??????????????????integer?????1
job_queue_processes??????????????????integer?????10
log_archive_max_processes????????????integer?????2
processes????????????????????????????integer?????300

?

?

小結(jié)
??本文給出了ORA-00020錯誤的模擬以及簡單的處理方法。對于生產(chǎn)環(huán)境最有效的避免發(fā)生ORA-00020錯誤的方法便是，上線前充分評估系統(tǒng)需要的最大進程數(shù)，一次性設(shè)置充分。這樣便可以從根本上防止ORA-00020錯誤的發(fā)生。

轉(zhuǎn)載于:https://www.cnblogs.com/Aixi/p/4779554.html

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