【DB笔试面试673】在Oracle中，如何dump数据库内部结构？

10046

enable SQL statement timing

level 0：禁用SQL_TRACE，等价于SQL_TRACE=FALSElevel 1：启用标准的SQL_TRACE功能跟踪SQL语句，包括解析、执行、提取、提交、回滚、响应时间、服务时间、处理的行数，物理读和写的数目、执行计划以及其它一些额外信息，等价于SQL_TRACE=TRUElevel 4：Level 1 + 包括绑定变量（Bind Values）的详细信息level 8：Level 1 + 包括等待事件level 12：包括绑定变量与等待事件，包含Level 1 + Level 4 + Level 8

ALTER SESSION SET EVENTS '10046 trace name context forever,level 12';

10053

CBO Enable optimizer trace

在分析SQL语句时，Dump出优化器所做的选择，级别level 1最详细

ALTER SESSION SET EVENTS '10053 trace name context forever, level 1';

10704

Print out information about what enqueues are being obtained

当启用的时候，可以查看锁的调用信息

ALTER SESSION SET EVENTS '10704 trace name context forever,level 10';

10710

Event 10710 - Trace Bitmap Index Access

跟踪位图索引的访问情况

ALTER SESSION SET EVENTS '10710 trace name context forever, level 1';

10711

Event 10711 - Trace Bitmap Index Merge Operation

跟踪位图索引合并操作

ALTER SESSION SET EVENTS '10711 trace name context forever, level 1';

10712

Event 10712 - Trace Bitmap Index OR Operation

跟踪位图索引或操作情况

ALTER SESSION SET EVENTS '10712 trace name context forever, level 1';

10713

Event 10713 - Trace Bitmap Index AND Operation

跟踪位图索引与操作

ALTER SESSION SET EVENTS '10713 trace name context forever, level 1';

10714

Event 10714 - Trace Bitmap Index MINUS Operation

跟踪位图索引MINUS操作

ALTER SESSION SET EVENTS '10714 trace name context forever, level 1';

10715

Event 10715 - Trace Bitmap Index Conversion to ROWIDs Operation

跟踪位图索引转换ROWID操作

ALTER SESSION SET EVENTS '10715 trace name context forever, level 1';

10716

Event 10716 - Trace Bitmap Index Compress/Decompress

跟踪位图索引压缩和解压缩情况

ALTER SESSION SET EVENTS '10716 trace name context forever, level 1';

10719

Event 10719 - Trace Bitmap Index DML

跟踪位图索引列的DML操作（引起位图索引改变的DML操作）

ALTER SESSION SET EVENTS '10719 trace name context forever, level 1';

10730

Event 10730 - Trace Fine Grained Access Predicates

跟踪细粒度审计的断语

ALTER SESSION SET EVENTS '10730 trace name context forever, level 1';

10731

Event 10731 - Trace CURSOR Statements

跟踪CURSOR的语句情况，跟踪游标声明，LEVEL 1表示跟踪父游标和子游标；LEVEL 2只跟踪子游标

ALTER SESSION SET EVENTS '10731 trace name context forever, level level';

10928

Event 10928 - Trace PL/SQL Execution

跟踪PL/SQL执行情况

ALTER SESSION SET EVENTS '10928 trace name context forever, level 1';

10938

Event 10938 - Dump PL/SQL Execution Statistics

转储PL/SQL执行统计信息，使用前需要执行脚本文件：$ORACLE_HOME/rdbms/admin/tracetab.sql

ALTER SESSION SET EVENTS '10938 trace name context forever, level 1';