【Oracle】重置参数 单实例中: altersystemresetparameter<scope=memory|spfile|both>;--memory|spfile|both,选其一 集群环境中: altersystemresetparameter<scope=memory|spfile|both>sid='sid|*';--sid='sid|*',主要用于集群中,默认为sid='*'
ALTER SYSTEM RESET parameter_name [SCOPE = MEMORY|SPFILE|BOTH] [SID= ‘sid’|’*’] 小布老师视频中提到: alter system set fast_start_mttr_target=250;(修改初始化参数默认是scope=both) 但是当用reset进行初始化参数还原时却遇到问题! SQL> alter system reset fast_start_mttr_target scope=both sid=...
SQL> alter system reset aq_tm_processes scope=spfile sid='jy1'; System altered. SQL> create pfile='/tmp/pfile13.ora' from spfile; File created. SQL> show parameter aq NAME TYPE VALUE --- --- --- aq_tm_processes integer 0 SQL> !ps -ef|grep...
Alter system reset <parameter_name> Resets a parameter. alter system reset some_param scope=both sid='*'; 1. scope scope=memory Changes the parameter's value for the running instance only. As soon as the instance is stopped and started, this change will be lost. scope=spfile Alters an i...
SQL> alter system set log_buffer =655360 scope=memory; alter system set log_buffer =655360 scope=memory * ERROR 在行 1: ORA-02095: 無法修改所指定的初使化參數 SQL> show parameter log_buff NAME TYPE VALUE --- --- --- log_buffer integer 524288 SQL> startup force; 已啟動 ORACLE 執行處...
SQL> alter system reset aq_tm_processes scope=spfile sid='jy1'; System altered. SQL> create pfile='/tmp/pfile13.ora' from spfile; File created. SQL> show parameter aq NAME TYPE VALUE --- --- --- aq_tm_processes integer 0 SQL> !ps -ef|grep q00 oracle 3801 27385 0 15:32 pts/...
showparameter open_cursors;--查看游标数selectcount(*)fromv$open_cursor;--查看当前打开的游标数目altersystemsetopen_cursors=1000scope=both;--修改最大游标数 4.关于审计 --考虑关闭审计(oracle 11g 默认打开审计)altersystemsetaudit_trail=nonesid='*'scope=spfile;--说明:11g 默认打开数据库审计,为了避免审...
删除spfile里的值即将参数值置为默认值:ALTER SYSTEM RESET parameter_name [SCOPE = MEMORY|SPFILE|BOTH] [SID= ‘sid’|’*’] startup命令行为: 当输入startup命令后,在$ORACLE_HOME/dbs/目录下查找初始化参数文件spfileSID.ora,启动instance;若无这个文件则查找缺省spfile文件,启动instance;若无这个文件则查找...
select name,value from v$spparameter where name='processes'; 动态参数:修改后时时生效 alter system set resource_limit =true; 静态参数:只记录在参数文件中下次重启生效 alter system set processes=300 scope=spfile; SCOPE = SPFILE 修改静态参数,重启后生效 ...
Another example is setting the underscored parameter because a request from Support in SR. 另一个例子,设置隐含参数的原因来自SR中Oracle公司技术支持人员的建议。 alter system set "_gc_policy_minimum"=15000 comment='user=Scott Tiger; Date=May 15, 2022; Reason=SR SR number' scope=both sid='*'...