What is Dbstat?

What is Dbstat?

What is Dbstat?

Overview. The DBSTAT virtual table is a read-only eponymous virtual table that returns information about the amount of disk space used to store the content of an SQLite database.

How do you check DB statistics in SAP?

Update Database Statistics with SAP BRTOOLS

  1. Connect to BRTOOLS via ora.
  2. Select 7 for Database statistics.
  3. Select 1 to Update database statistics.
  4. This page is the main options for update statistic.
  5. This page is the additional options for update statistics.
  6. This step is to check the statistics.

How do I view table statistics in SAP?

Procedure

  1. Choose Administration CCMS DB Administration Cost-based optimizer Create statistics.
  2. Enter the name of the table in Table (do not enter a generic name or pattern) and choose Refresh information to display information about current table statistics.

What is stat in db?

2. 21. Statistics simply are a form of dynamic metadata that assists the query optimizer in making better decisions. For example, if there are only a dozen rows in a table, then there’s no point going to an index to do a lookup; you will always be better off doing a full table scan.

How do I find the size of a MongoDB database?

Probably the quickest and easiest way to check the size of a MongoDB collection is to use the db. collection. dataSize() method. This method returns the size of the collection in bytes.

How do I find the size of a MongoDB?

  1. Overview of db. stats() command.
  2. MongoDB Get data size and get index size in bytes.
  3. Get data size and index size in Kilobytes (KB)
  4. Get data size and index size in MB (Megabytes)
  5. Get data size and index size in GB (Gigabytes)

How do I check my stats in Sybase?

menu Space > Tables and Indexes > Single Table Analysis , and filter there the table name you would like to check. You’ll see details for Statistics and ATM activities logs.

How do I update table statistics in SAP HANA?

To update statistics for a single table:

  1. Log on to the operating system user with adm.
  2. Open a shell / command line and log on to the database using: isql -S -Usapsa -P use
  3. Use the following command to start the statistics update for a table: update index statistics SAPSR3. go.

What is cardinality SQL?

In SQL (Structured Query Language), the term cardinality refers to the uniqueness of data values contained in a particular column (attribute) of a database table. The lower the cardinality, the more duplicated elements in a column.