This topic describes how to assess the performance differences between an Oracle database and an OceanBase database.
Collect the workload capture replay (WCR) files of the Oracle database.
Analyze the files.
Run
start.shby referring to the following sample commands. For more information about the parameters in the script, see Product form. In Microsoft Windows, replacesh bin/start.shwithstart.bat.sh bin/start.sh \ # The task name. --name test \ # A fixed value that specifies to perform a database replay. --mode REPLAY \ # A fixed value that specifies the COLLECT phase of replay. --replay-phase COLLECT \ # The source file. --source-file "/root/oma/test" \ # The number of parallel threads, which affects the replay performance. We recommend that you set the value to be as large as possible if the server performance permits. --parallel-count 20 \ # The schema name corresponding to the UID. The schema name must be in uppercase. Multiple schema names must be separated with commas (,). Note that only one hyphen (-) is added to the beginning of this parameter. -DuseUidToSchemaMap=103:UWBPS,20:UBXYZ \ # The number of parallel threads during parsing. Specify this parameter based on the server performance. Default value: 10. --parse-thread-count 200 \ # The extended configuration file, which is a standard Java configuration file. You can leave this parameter unspecified if no special configuration is required. # In the configuration file, specify one configuration item in each line and separate multiple configuration items with equal signs (=). --extend-configure "/your/path/file/name.conf" \ # The date format of OceanBase Database. You can use this parameter to convert the date format. # By default, if this parameter is not specified, the date format is DD-MON-RR. You can run the show variables like '%nls%format%' command to view the specific NLS configuration. --nls-format "YYYY-MM-DD" # The following parameters are required only when you want to tune SQL statements. # Indicates to enable tuning. --tuning-mode \ # The IP address of the source Oracle database. --source-db-host xxx.xxx.xxx.xxx \ # The port number of the source Oracle database. --source-db-port 1521 \ # The username of the source Oracle database. --source-db-user user \ # The password of the source Oracle database. --source-db-password password \ # The service name of the source Oracle database. --source-db-service-name orcl11g.us.oracle.comThe extended configuration file specified by the
--extend-configureparameter is a standard Java configuration file. The extended configuration file must contain theignore_sqls=XXX,AAA,XXXXparameter to correctly parse out the SQL ID. Multiple IDs must be separated with commas (,). The IDs are not parsed and are no longer displayed during the replay. Example:ignore_sqls=0046uu0mqdjr1,5rsm4y10jd4p2After the analysis is completed, the analysis results are generated, including the overall chart of queries per minute (QPM). The step size is 60s. Statistical information of the specified schema is displayed, including QPM and the total number of queries.
Task name: [ test-20210530_233520 ] SCHEMA : [ schema_name ] : -----================ [ schema_name ] Traffic histogram [ Step size: 60 seconds ]===============------- 4352.0┤ ─ ─ ─ ─ ─ ─ ─ ─ ─ █ ─ ─ ─ ─ ─ ─ ─ 4134.4┤ ─ ─ ─ ─ ─ ─ ─ ─ ─ █ ─ ─ ─ ─ ─ █ ─ 3916.8┤ ─ ─ ─ ─ ─ ─ ─ ─ ─ █ █ ─ ─ ─ ─ █ ─ 3699.2┤ ─ ─ ─ ─ ─ ─ ─ ─ ─ █ █ ─ ─ ─ ─ █ ─ 3481.6┤ ─ ─ ─ ─ ─ ─ ─ ─ ─ █ █ ─ ─ ─ █ █ ─ 3264.0┤ ─ ─ ─ ─ ─ ─ ─ ─ █ █ █ ─ ─ ─ █ █ ─ 3046.4┤ ─ ─ ─ ─ ─ ─ ─ █ █ █ █ █ █ ─ █ █ ─ 2828.8┤ ─ ─ ─ ─ █ ─ ─ █ █ █ █ █ █ █ █ █ ─ 2611.2┤ ─ ─ ─ ─ █ ─ ─ █ █ █ █ █ █ █ █ █ ─ 2393.6┤ █ ─ ─ ─ █ ─ █ █ █ █ █ █ █ █ █ █ ─ 2176.0┤ █ ─ ─ ─ █ █ █ █ █ █ █ █ █ █ █ █ █ 1958.4┤ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ 1740.8┤ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ 1523.2┤ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ 1305.6┤ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ 1088.0┤ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ 870.4┤ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ 652.8┤ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ 435.2┤ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ 217.6┤ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ Start time: 2021-03-09 09:59:09 End time: 2021-03-09 10:10:15 Time spent (seconds): 666 Requests: 50774 ******************************************************************************************After the analysis is completed, a folder named after the task name is generated in the
./dump/directory. Example:test-20210530_233520. The folder stores replayable files in JSON format.Replay the files.
Run
start.shby referring to the following sample commands. For more information about the parameters in the script, see Product form. In Microsoft Windows, replacesh bin/start.shwithstart.bat.bin/start.sh \ # The task name. --name send1 \ # A fixed value that specifies to perform a database replay. --mode REPLAY \ # A fixed value that specifies the SEND phase of replay. --replay-phase SEND \ # The replay mode. Valid values: READ, WRITE, READ_WRITE, PL, and ALL. Default value: READ. --replay-mode ALL \ # The path of files to be replayed. --source-file "./dump/test" \ # Specifies to replay in order. --replay-process-name "sort" \ # Specifies the period after which the replay will be restarted, in the unit of seconds. Default value: 0, which specifies to immediately start the replay. --delay-start-time 5 \ # The replay scale. The default value of this parameter is 1, which indicates that the replay will run at the original speed. --replay-scale 5 \ # The sampling ratio, which ranges from 0 to 1. The default value is 1, which indicates full sampling. --replay-sample 1 \ # The maximum number of threads, which is 400 by default and cannot exceed 2,000. --max-parallel 400 \ # The system warm-up time, in seconds. Default value: 0. # Due to the cold start during a replay, a warm-up time must be specified. --warm-up 30 \ # The IP address of the destination database. You can specify only one destination database for replay. --target-db-host xxx.xxx.xxx.xxx \ # The port number of the destination database. --target-db-port 2883 \ # The tenant name and cluster name, which must be separated with a number sign (#). The tenant name precedes the cluster name. # You can replay calls from multiple users, but the users must belong to the same tenant. --target-db-tenant-cluster "oms_oracle#ob_100811****.admin" \ # The logon username and password, which must be separated with a colon (:). Multiple username/password pairs must be separated with commas (,). # Note that only one hyphen (-) is added to the beginning of this parameter. The first username must be that of the SYS user, which is used to obtain information from the SQL_AUDIT view. -DuserAndPassword=<sys_name>:<sys_password>,schema_name:123456,schema_name2:123456 \ # The custom configuration for the JDBC connection. You can specify the JDBC parameters based on the actual situation, such as useUnicode:true,characterEncoding:utf8. This parameter is optional. -DjdbcConnectionConfigure=useUnicode:true,characterEncoding:utf8 \ # The process self-monitoring parameter, in minutes. Default value: 10. We recommend that you set this parameter to 30. # If you set this parameter to XX, the system will forcibly exit the main process when the main process has not sent any data for XX minutes. --monitor-processor-time 10 \ # The interval for scanning the SQL_AUDIT view, in seconds. Default value: 60. Set this parameter based on your requirements. --sql-audit-interval 300 \ # Indicates that transactions are to be replayed. # Specifies to replay transactions. If this parameter is absent, transactions are not replayed. --with-replay-transactionAfter this command is executed, the real-time replay progress is displayed.
Destination SCHEMA :::SCHEMA : [ schema_name ] : -----================ [ schema_name ] Traffic histogram [ Step size: 12 seconds ]===============------- 4412.0┤ █ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ 4191.4┤ █ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ 3970.8┤ █ ─ ─ ─ ─ ─ ─ ─ █ █ ─ ─ ─ ─ █ ─ 3750.2┤ █ ─ ─ ─ ─ ─ ─ ─ █ █ ─ ─ ─ ─ █ ─ 3529.6┤ █ ─ ─ ─ ─ ─ ─ ─ █ █ ─ ─ ─ ─ █ ─ 3309.0┤ █ ─ ─ ─ ─ ─ ─ ─ █ █ █ ─ ─ █ █ ─ 3088.4┤ █ ─ ─ ─ ─ ─ ─ █ █ █ █ █ ─ █ █ █ 2867.8┤ █ ─ ─ █ ─ ─ █ █ █ █ █ █ █ █ █ █ 2647.2┤ █ ─ ─ █ ─ ─ █ █ █ █ █ █ █ █ █ █ 2426.6┤ █ ─ ─ █ █ ─ █ █ █ █ █ █ █ █ █ █ 2206.0┤ █ ─ ─ █ █ █ █ █ █ █ █ █ █ █ █ █ 1985.4┤ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ 1764.8┤ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ 1544.2┤ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ 1323.6┤ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ 1103.0┤ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ 882.4┤ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ 661.8┤ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ 441.2┤ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ 220.6┤ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ Start time: 2021-05-31 00:14:04 End time: 2021-05-31 00:17:15 Time spent (seconds): 190 Requests: 50774 ******************************************************************************************View the replay report.
After the replay is completed, you can perform the following steps to view the workload replay report.
Go to the replayReportTool directory and double-click the index.html file.
On the page that appears, click Authorize and View Report.
Select and open the oma.sqlite file.
Generally, the oma.sqlite file is stored in the db folder under the root directory of OMA.
On the page that appears after you open the oma.sqlite file, click Select Report in the upper-right corner and select the workload replay report that you want to view from the drop-down list.
You can view the users who support the replay calls in the destination database, replay success rate, replay traffic comparison chart, and list of replay information in the workload replay report.