How do I enable Statspack?
Installing the Statspack
- Navigate to the $ORACLE_HOME/rdbms/admin directory as follows:
- Start the Statspack install script, spcreate.sql , as follows:
- Enter a password for the PERFSTAT user when prompted.
- Enter the default tablespace (tools) for the PERFSTAT user when prompted.
Which of the following utilities are used to verify integrity of Oracle database files at OS level?
DBVERIFY is an external command-line utility that performs a physical data structure integrity check. It can be used on offline or online databases, as well on backup files.
How do I uninstall Oracle Statspack?
If you decide you do not need Statspack installed any more you can remove/uninstall Statspack with ORACLE_HOME/rdbms/admin/spdrop. sql The spdrop. sql needs be dropped by a user with SYSDBA. Remember to remove any jobs you might have created to manage the Statspack environment.
Which user is created when Spcreate SQL is executed?
The SPCREATE. SQL script runs the following scripts: SPCUSR. SQL: Creates PERFSTAT user and grants privileges.
How do you gather statistics in Oracle?
To estimate statistics, Oracle selects a random sample of data. You can specify the sampling percentage (Oracle Corporation recommends using DBMS_STATS . AUTO_SAMPLE_SIZE ) and whether sampling should be based on rows or blocks. When in doubt, use row sampling.
What is EXP and IMP in Oracle?
You want to import files that were created using the original Export utility ( exp ). You want to export files that will be imported using the original Import utility ( imp ). An example of this would be if you wanted to export data from Oracle Database 10g and then import it into an earlier database release.
What is Runcluvfy sh?
The runcluvfy.sh script contains temporary variable definitions which enable it to run before you install Oracle Grid Infrastructure or Oracle Database. After you install Oracle Grid Infrastructure, use the cluvfy command to check prerequisites and perform other system readiness checks.
How do you automate AWR report generation?
To get the Reports window to appear, click on the View menu and select Reports from the drop-down list. In the Reports window, click on Data Dictionary Reports, followed by ASH and AWR. You should now see a report called Last AWR Report which will automatically generate a text-based AWR report for the last hour.
How is AWR report generated?
The awrgdrpt. sql SQL script generates an HTML or text report that compares detailed performance attributes and configuration settings between two selected time periods using the current database identifier and all available database instances in an Oracle Real Application Clusters (Oracle RAC) environment.