使用statspack收集11g active dataguard性能数据

电玩女神 2022-08-06 17:29 173阅读 0赞

11g active dataguard 生成的awr信息是主库的awr，而不是dataguard的awr信息，不能生成备库的awr，但是可以生产statspack。

1. Standby Statspack Usage

1.1 Statspack Installation

The perfstat schema and statspack related objects must be present on the primary and standby prior to installing standby statspack.

If the perfstat user does not exist in the primary site then you will need to create the perfstat schema using the following:

sqlplus / as sysdba  
SQL> @?/rdbms/admin/spcreate.sql

The standby statspack installation script (sbcreate.sql) creates the standby statspack schema to hold the standby snapshots. The script asks for:

1.  A password for stdbyperf user

2.  Default tablespace

3.  Temporary tablespace

The script creates the ‘stdbyperf’ user and assigns it the selected default and temporary table space. After the user has been created it calls sbaddins.sql to add the first standby instance to the configuration.  
Example:

SQL> @?/rdbms/admin/sbcreate

Note: Due to [Bug 11899453][], ensure global\_names is set to 'FALSE' on the Standby Database while you run this Script. See [Note 11899453.8][] for some more Details.

1.2 Add an Instance to Statspack Configuration

Log in to the primary as the 'stdbyperf' user and run the script sbaddins.sql to add a standby instance to the configuration. The script asks for:

1.  The TNS alias of the standby database instance

2.  The password of the perfstat user on the standby site

The script then creates a private database link to the perfstat schema on the standby site and a separate gathering package for each standby instance. Example:

SQL> connect stdbyperf/your\_password   
SQL> @?/rdbms/admin/sbaddins  
Input inst2\_alias as the tns alias.

1.3 Collect Performance Data from a Standby Instance

The script sbaddins.sql creates a separate PL SQL package for each standby instance. Run the snap procedure of those packages to collect the performance data. The statspack\_<instance\_name>.snap procedure accesses the data dictionary and stats$ views on the standby database via database link connected to the original perfstat user und stores the data to stats$ tables on the primary instance. For example, while the standby is opened read only, login to the primary database and create the snap:

SQL> connect stdbyperf/your\_password  
SQL> exec statspack\_<db\_unique\_name>\_<instance\_name>.snap

1.4 Generate Standby Statistics Report

The script sbreport.sql generates the standby statistics report. The script asks for: database id, instance number, high and low snapshots id to create the report. Example:

SQL>@?/rdbms/admin/sbreport

1.5 Purge a Set of Snapshots

The script sbpurge.sql purges a set of snapshots. The script asks for database id, instance number, low and high snapshots ids. The script purges all snapshots between the low and high snapshot ids for the given instance. Example:

SQL>@?/rdbms/admin/sbpurge

1.6 Delete an Instance from the Configuration

The script sbdelins.sql deletes an instance from the configuration, and deletes the associated PL SQL package. The scripts asks for instance name. The snapshots are not automatically purged when the instance is deleted. After deleting the instance, you are not able to generate reports for that instance. Example:

SQL> @?/rdbms/admin/sbdelins

1.7 Drop Statspack Schema

The script sbdrop.sql drops the stdbyperf user and tables. The script must be run when connected to SYS (or internal). Example:

SQL> connect / as sysdba  
SQL> @?/rdbms/admin/sbdrop

2. New Statistics Collected

Two new sections are added to standby statspack report: (1) Recovery Progress Stats, and (2) Managed Standby Stats. An example is provided below.

Recovery Progress Stats DB/Inst: MADISON/madison1 End Snap: 2  
\-> End Snapshot Time: 20-Jun-07 13:59:29  
\-> ordered by Item, Recovery Start Time desc  
Recovery Start Time Item Sofar Units Redo Timestamp  
——————- —————– ————– ——- ——————  
08-Jun-07 11:58:15 Active Apply Rate 8,420 KB/sec  
08-Jun-07 11:58:15 Active Time 4,291 Seconds  
08-Jun-07 11:58:15 Apply Time per Lo 267 Seconds  
08-Jun-07 11:58:15 Average Apply Rat 3 KB/sec  
08-Jun-07 11:57:15 Average Apply Rat 955 KB/sec  
08-Jun-07 11:58:15 Checkpoint Time p 0 Seconds  
08-Jun-07 11:58:15 Elapsed Time 1,044,073 Seconds  
08-Jun-07 11:57:15 Elapsed Time 6 Seconds  
08-Jun-07 11:58:15 Last Applied Redo 15,273,580 SCN+Tim 20-Jun-07 13:59:29  
08-Jun-07 11:57:15 Last Applied Redo 13,945,701 SCN+Tim 08-Jun-07 11:56:16  
08-Jun-07 11:58:15 Log Files 16 Files  
08-Jun-07 11:57:15 Log Files 33 Files  
08-Jun-07 11:58:15 Redo Applied 3,181 Megabyt  
08-Jun-07 11:57:15 Redo Applied 6 Megabyt  
————————————————————-

Managed Standby Stats DB/Inst: MADISON/madison1 End Snap: 2  
\-> End Snapshot Time: 20-Jun-07 13:59:29  
\-> ordered by Process  
Process pid Status Resetlog Id Thread Seq Block Num  
———– ———- ———— ———– —— ——- ———–  
Client Proc Client pid Blocks Delay(mins)  
———– ———- ————– ————–  
ARCH 29360 CLOSING 624693241 2 59 18433  
ARCH 29360 340 0  
ARCH 29358 CLOSING 624693241 1 57 94209  
ARCH 29358 1,596 0  
ARCH 29356 CLOSING 624693241 1 56 903169  
ARCH 29356 1,835 0  
ARCH 29354 CLOSING 624693241 2 61 919553  
ARCH 29354 770 0  
MRP0 30839 APPLYING\_LOG 624693241 2 62 57  
N/A N/A 2,097,152 0  
RFS 28886 IDLE 0 0 0 0  
N/A 16388 0 0  
RFS 28875 IDLE 624693241 2 62 2164  
LGWR 16137 432 0  
RFS 30192 IDLE 624693241 1 58 51  
LGWR 2092 1 0  
RFS 28892 IDLE 0 0 0 0  
UNKNOWN 16384 0 0  
RFS 30326 IDLE 0 0 0 0  
N/A 2268 0 0  
————————————————————-

3. List of New Scripts and Short Descriptions

All those Scripts below are located in $ORACLE\_HOME/rdbms/admin

sbcreate.sql – Install standby statspack  
sbcusr.sql – Called from sbcreate.sql to create the schema  
sbctab.sql – Called from sbcreate.sql to create tables holding snapshots  
sbaddins.sql – Called from sbcreate.sql to add a standby database instance to the configuration.

sbaddins.sql – Add a standby database instance to the configuration  
sbcpkg.sql – Called from sbaddins.sql to create the instance specific statspack package

sblisins.sql – List instances in the standby statspack configuration

sbreport.sql – Create a standby statistics report  
sbrepcon.sql – Called from sbreport.sql to get the report configuration  
sbrepins.sql – Called from sbreport.sql to create the actual report

sbpurge.sql – Purge a set of snapshots identified by low and high snapshot ids

sbdelins.sql – Delete an instance from the standby statspack configuration

sbdrop.sql – Drop the stdbyoperf user and tables of the standby statspack

sbdtab.sql – Called from sbdrop.sql to drop tables  
sbdusr.sql – Called from sbdrop.sql to drop user, must run from an account that connects to internal (SYS)

来自：**Installing and Using Standby Statspack in 11g (文档 ID 454848.1)**

[Bug 11899453]: https://support.oracle.com/epmos/faces/BugDisplay?id=11899453
[Note 11899453.8]: https://support.oracle.com/epmos/faces/DocumentDisplay?id=11899453.8