生成ASH报告
ashrpt.sql SQL脚本生成一个HTML或文本报告，显示指定持续时间的ASH信息。
要生成ASH报告：
1.At the SQL prompt, enter:
@$ORACLE_HOME/rdbms/admin/ashrpt.sql
2.Specify whether you want an HTML or a text report:
Enter value for report_type: text
In this example, a text report is chosen.
3.Specify the begin time in minutes before the system date:
Enter value for begin_time: -10
In this example, 10 minutes before the current time is selected.
4.Enter the duration in minutes that the report for which you want to capture ASH information from the begin time.
Enter value for duration:
In this example, the default duration of system date minus begin time is accepted.
5.Enter a report name, or accept the default report name:
Enter value for report_name:
Using the report name ashrpt_1_0310_0131.txt
在此示例中，接受默认名称并生成名为ashrpt_1_0310_0131的ASH报告。 报告将从当前时间的前10分钟开始收集ASH信息，并在当前时间结束。
在特定数据库实例上生成ASH报告
ashrpti.sql SQL脚本生成一个HTML或文本报告，用于显示指定数据库和实例的指定持续时间的ASH信息。 通过此脚本，您可以在设置收集ASH信息的时间范围之前指定数据库和实例。
要在指定的数据库实例上生成ASH报告：
To generate an ASH report on a specified database instance:
1.At the SQL prompt, enter:
@$ORACLE_HOME/rdbms/admin/ashrpti.sql
2.Specify whether you want an HTML or a text report:
Enter value for report_type: html
In this example, an HTML report is chosen.
3.A list of available database IDs and instance numbers are displayed:
Instances in this Workload Repository schema
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
DB Id Inst Num DB Name Instance Host
3309173529 1 MAIN main examp1690
3309173529 1 TINT251 tint251 samp251
Enter the values for the database identifier (dbid) and instance number (inst_num):
Enter value for dbid: 3309173529
Using 3309173529 for database id
Enter value for inst_num: 1
4.This step is applicable only if you are generating an ASH report on an Active Data Guard physical standby instance. If this is not the case, you may skip this step.
To generate an ASH report on a physical standby instance, the standby database must be opened read-only. The ASH data on disk represents activity on the primary database and the ASH data in memory represents activity on the standby database.
Specify whether to generate the report using data sampled from the primary or standby database:
You are running ASH report on a Standby database.
To generate the report over data sampled on the Primary database, enter 'P'.
Defaults to 'S' - data sampled in the Standby database.
Enter value for stdbyflag:
Using Primary (P) or Standby (S): S
In this example, the default value of Standby (S) is selected.
5.Specify the begin time in minutes before the system date:
Enter value for begin_time: -10
In this example, 10 minutes before the current time is selected.
6.Enter the duration in minutes that the report for which you want to capture ASH information from the begin time.
Enter value for duration:
In this example, the default duration of system date minus begin time is accepted.
7.Specify the slot width in seconds that will be used in the Activity Over Time section of the report:
Enter value for slot_width:
In this example, the default value is accepted. For more information about the Activity Over Time section and how to specify the slot width, see "Activity Over Time" on page 5-41.
8.Follow the instructions as explained in the subsequent prompts and enter values for the following report targets:
■target_session_id
■target_sql_id
■target_wait_class
■target_service_hash
■target_module_name
■target_action_name
■target_client_id
■target_plsql_entry
9.Enter a report name, or accept the default report name:
Enter value for report_name:
Using the report name ashrpt_1_0310_0131.txt
在此示例中，接受默认名称并生成名为ashrpt_1_0310_0131的ASH报告。 该报告将收集数据库实例上的ASH信息，数据库ID值为3309173529，从当前时间的前10分钟开始到当前时间结束。
生成Oracle RAC ASH报告
ashrpti.sql SQL脚本生成一个HTML或文本报告，用于在Oracle RAC环境中显示指定数据库和实例的指定持续时间的ASH信息。 只有写入磁盘的ASH数据才会用于生成报告。 此报告将仅使用DBA_HIST_ACTIVE_SESS_HISTORY表中找到的最近10分钟的ASH样本。
要在Oracle RAC环境中生成ASH报告，请执行以下操作：
1.At the SQL prompt, enter:
@$ORACLE_HOME/rdbms/admin/ashrpti.sql
2.Specify whether you want an HTML or a text report:
Enter value for report_type: html
In this example, an HTML report is chosen.
3.A list of available database IDs and instance numbers are displayed:
Instances in this Workload Repository schema
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
DB Id Inst Num DB Name Instance Host
3309173529 1 MAIN main examp1690
3309173529 1 TINT251 tint251 samp251
3309173529 2 TINT251 tint252 samp252
3309173529 3 TINT251 tint253 samp253
3309173529 4 TINT251 tint254 samp254
Enter the values for the database identifier (dbid) and instance number (inst_num):
Enter value for dbid: 3309173529
Using database id: 3309173529
Enter instance numbers. Enter 'ALL' for all instances in an Oracle
RAC cluster or explicitly specify list of instances (e.g., 1,2,3).
Defaults to current instance.
Enter value for inst_num: ALL
Using instance number(s): ALL
4.Specify the begin time in minutes before the system date:
Enter value for begin_time: -1:10
In this example, 1 hour and 10 minutes before the current time is selected.
5.Enter the duration in minutes that the report for which you want to capture ASH information from the begin time:
Enter value for duration: 10
In this example, the duration is set to 10 minutes.
6.Specify the slot width in seconds that will be used in the Activity Over Time section of the report:
Enter value for slot_width:
In this example, the default value is accepted. For more information about the Activity Over Time section and how to specify the slot width, see "Activity Over Time" on page 5-41.
7.Follow the instructions as explained in the subsequent prompts and enter values for the following report targets:
■target_session_id
■target_sql_id
■target_wait_class
■target_service_hash
■target_module_name
■target_action_name
■target_client_id
■target_plsql_entry
8.Enter a report name, or accept the default report name:
Enter value for report_name:
Using the report name ashrpt_rac_0310_0131.txt
在此示例中，接受默认名称并生成名为ashrpt_rac_0310_0131的ASH报告。 报告将收集关于属于数据库的所有实例的ASH信息，数据库ID值为3309173529，从当前时间前1小时10分钟开始，到当前时间前1小时结束。
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