系统产生大量redo,怀疑与昨天测试streams ,suppolemental log 有关!
2009-07-02 11:02
351 查看
系统产生大量redo,归档增加600多倍。怀疑与昨天测试streams ,suppolemental log 有关!
SQL> select SUPPLEMENTAL_LOG_DATA_PK, SUPPLEMENTAL_LOG_DATA_UI, SUPPLEMENTAL_LOG_DATA_PK from v$database;
NO NO NO
SQL> SELECT supplemental_log_data_min^KFROM v$database;
YES
SQL> ALTER DATABASE^KDROP SUPPLEMENTAL LOG DATA;
Database altered.
SQL> SELECT supplemental_log_data_min^KFROM v$database;
NO
SQL> select * from DBA_LOG_GROUPS;
OWNER LOG_GROUP_NAME
------------------------------ ------------------------------
TABLE_NAME LOG_GROUP_TYPE ALWAYS GENERATED
------------------------------ ------------------- ----------- --------------
SVC_CONTRACT SYS_C00368574
CONTRACT_OWNER PRIMARY KEY LOGGING ALWAYS GENERATED NAME
SVC_CONTRACT SYS_C00368575
CONTRACT_OWNER FOREIGN KEY LOGGING CONDITIONAL GENERATED NAME
SVC_CONTRACT SYS_C00368576
CONTRACT_OWNER UNIQUE KEY LOGGING CONDITIONAL GENERATED NAME
SVC_CONTRACT SYS_C00368577
CONTRACT_STATE PRIMARY KEY LOGGING ALWAYS GENERATED NAME
SVC_CONTRACT SYS_C00368578
CONTRACT_STATE FOREIGN KEY LOGGING CONDITIONAL GENERATED NAME
SVC_CONTRACT SYS_C00368579
CONTRACT_STATE UNIQUE KEY LOGGING CONDITIONAL GENERATED NAME
..........
alter table svc_contract.CENTER_CUSTOMER_LINK drop supplemental log data (primary key,unique,foreign key) columns;
alter table svc_contract.CONTRACT_STATE_HISTORY drop supplemental log data (primary key,unique,foreign key) columns;
alter table svc_contract.CONTRACT_OWNER drop supplemental log data (primary key,unique,foreign key) columns;
alter table svc_contract.SERVICEASSOCIATION drop supplemental log data (primary key,unique,foreign key) columns;
alter table svc_contract.CONTROLCENTER drop supplemental log data (primary key,unique,foreign key) columns;
alter table svc_contract.SERVICE_ASSOCIATION_STATE drop supplemental log data (primary key,unique,foreign key) columns;
alter table svc_contract.SUNCONTRACT_TOS_LINK drop supplemental log data (primary key,unique,foreign key) columns;
..................
发现日志果然不那么快的产生了。
suppolemental log 一方面是为LogMiner需要,另一方面与stream有关。
启用suppolemental log可以使LogMiner支持:chained rows,clustered tables,index organized tables (IOTs)
可以在四个级别启用suppolemental log:
For all columns :ALTER DATABASE ADD SUPPLEMENTAL LOG DATA (ALL) COLUMNS;
For primary key columns:ALTER DATABASE ADD SUPPLEMENTAL LOG DATA (PRIMARY KEY) COLUMNS;
For unique columns:ALTER DATABASE ADD SUPPLEMENTAL LOG DATA (UNIQUE) COLUMNS;
For foreign key columns:ALTER DATABASE ADD SUPPLEMENTAL LOG DATA (FOREIGN KEY) COLUMNS;
查看启用的级别:
SELECT supplemental_log_data_min, supplemental_log_data_pk, supplemental_log_data_ui, supplemental_log_data_fk,supplemental_log_data_all FROM v$database;
SELECT log_group_name, owner, table_name,
DECODE(always, 'ALWAYS', 'Unconditional',
NULL, 'Conditional') ALWAYS
FROM DBA_LOG_GROUPS
SQL> select SUPPLEMENTAL_LOG_DATA_PK, SUPPLEMENTAL_LOG_DATA_UI, SUPPLEMENTAL_LOG_DATA_PK from v$database;
NO NO NO
SQL> SELECT supplemental_log_data_min^KFROM v$database;
YES
SQL> ALTER DATABASE^KDROP SUPPLEMENTAL LOG DATA;
Database altered.
SQL> SELECT supplemental_log_data_min^KFROM v$database;
NO
SQL> select * from DBA_LOG_GROUPS;
OWNER LOG_GROUP_NAME
------------------------------ ------------------------------
TABLE_NAME LOG_GROUP_TYPE ALWAYS GENERATED
------------------------------ ------------------- ----------- --------------
SVC_CONTRACT SYS_C00368574
CONTRACT_OWNER PRIMARY KEY LOGGING ALWAYS GENERATED NAME
SVC_CONTRACT SYS_C00368575
CONTRACT_OWNER FOREIGN KEY LOGGING CONDITIONAL GENERATED NAME
SVC_CONTRACT SYS_C00368576
CONTRACT_OWNER UNIQUE KEY LOGGING CONDITIONAL GENERATED NAME
SVC_CONTRACT SYS_C00368577
CONTRACT_STATE PRIMARY KEY LOGGING ALWAYS GENERATED NAME
SVC_CONTRACT SYS_C00368578
CONTRACT_STATE FOREIGN KEY LOGGING CONDITIONAL GENERATED NAME
SVC_CONTRACT SYS_C00368579
CONTRACT_STATE UNIQUE KEY LOGGING CONDITIONAL GENERATED NAME
..........
alter table svc_contract.CENTER_CUSTOMER_LINK drop supplemental log data (primary key,unique,foreign key) columns;
alter table svc_contract.CONTRACT_STATE_HISTORY drop supplemental log data (primary key,unique,foreign key) columns;
alter table svc_contract.CONTRACT_OWNER drop supplemental log data (primary key,unique,foreign key) columns;
alter table svc_contract.SERVICEASSOCIATION drop supplemental log data (primary key,unique,foreign key) columns;
alter table svc_contract.CONTROLCENTER drop supplemental log data (primary key,unique,foreign key) columns;
alter table svc_contract.SERVICE_ASSOCIATION_STATE drop supplemental log data (primary key,unique,foreign key) columns;
alter table svc_contract.SUNCONTRACT_TOS_LINK drop supplemental log data (primary key,unique,foreign key) columns;
..................
发现日志果然不那么快的产生了。
suppolemental log 一方面是为LogMiner需要,另一方面与stream有关。
启用suppolemental log可以使LogMiner支持:chained rows,clustered tables,index organized tables (IOTs)
可以在四个级别启用suppolemental log:
For all columns :ALTER DATABASE ADD SUPPLEMENTAL LOG DATA (ALL) COLUMNS;
For primary key columns:ALTER DATABASE ADD SUPPLEMENTAL LOG DATA (PRIMARY KEY) COLUMNS;
For unique columns:ALTER DATABASE ADD SUPPLEMENTAL LOG DATA (UNIQUE) COLUMNS;
For foreign key columns:ALTER DATABASE ADD SUPPLEMENTAL LOG DATA (FOREIGN KEY) COLUMNS;
查看启用的级别:
SELECT supplemental_log_data_min, supplemental_log_data_pk, supplemental_log_data_ui, supplemental_log_data_fk,supplemental_log_data_all FROM v$database;
SELECT log_group_name, owner, table_name,
DECODE(always, 'ALWAYS', 'Unconditional',
NULL, 'Conditional') ALWAYS
FROM DBA_LOG_GROUPS
相关文章推荐
- sql server 清除系统错误日志,消息队列产生大量日志
- axis2在tomcat的temp中产生大量的临时文件,压力测试性能存在问题
- Centos6.5系统压力测试过程大量TIME_WAIT
- 测试4——shrink和move产生的redo log量的比较
- Process Monitor监测记录表明,QQ不仅会自动访问许多与聊天无关的程序和文档,例如“我的文档”等敏感位置,测试当天的上网记录也没能幸免。随后,QQ还会产生大量网络通讯,很可能是将数据上传到腾讯服务器。短短10分钟内,它访问的无关
- loadrunner测试ajax框架的系统时,录制回放都没有报错,但是回放后系统中没有产生数据,解决方法
- oracle 下操作blob字段是否会产生大量redo
- 系统测试时有关日期和时间
- 为什么联机备份表空间中的数据文件会产生大量redo,冻结数据文件头的scn(引用)
- oracle 下操作blob字段是否会产生大量redo
- 为windows下的mysql产生大量测试数据
- ogg之偶尔导数据,导致产生大量local trail file文件系统快满的问题
- Linux系统中使用 DD 命令测试 USB 和 SSD 硬盘的读写速度
- 改变系统状态栏背景色(真机测试有效)
- 如何减小大量写log对性能测试的影响
- 用c#开发微信 (14) 微统计 - 阅读分享统计系统 4 部署测试 (最终效果图)
- 成功的 Web 应用系统性能测试
- SD-SDI播出系统---使用GTX TX产生恢复时钟
- 运用JMeter登录系统,并进行性能测试
- 以最快的方式生成大量的测试数据