## MONITOR_LOAD

### Definition

This monitor system table MONITOR_LOAD contains information about executed SQL statements and access methods.

### Structure

DESCRIPTION Column

Value | Explanation
SQL commands | Number of executed SQL statements
PREPAREs | Number of parsed SQL statements
PREPAREs repeated | Number of SQL statements that were parsed again after metadata was changed
EXECUTEs | Number of executions of previously parsed SQL statements
COMMITs | Number of executed COMMIT statements
ROLLBACKs | Number of executed ROLLBACK statements
LOCKs and UNLOCKs | Number of executed LOCK and UNLOCK statements
SUBTRANS BEGINs | Number of SQL statements for opening a subtransaction
SUBTRANS ENDs | Number of SQL statements for closing a subtransaction
SUBTRANS ROLLBACKs | Number of SQL statements for rolling back a subtransaction
CREATEs | Number of executed SQL statements for creating database objects
ALTERs | Number of executed SQL statements for altering database objects
DROPs | Number of executed SQL statements for dropping database objects
SELECTs and FETCHes | Number of executed SQL statements for accessing data
SELECTs and FETCHes, rows read | Number of rows read when accessing data
SELECTs and FETCHes, rows qual | Number of rows that were read when accessing data and that satisfied conditions
INSERTs | Number of executed SQL statement for inserting rows
INSERTs, rows inserted | Number of rows inserted
UPDATEs | Number of executed SQL statements for updating rows
UPDATEs, rows read | Number of rows read when updating data
UPDATEs, rows updated | Number of rows updated
DELETEs | Number of executed SQL statements for deleting rows
DELETEs, rows read | Number of rows read when deleting data
DELETEs, rows deleted | Number of rows deleted
Internal DBPROC calls | Number of database procedures executed
External DBPROC calls | Number of external database procedure calls
Internal trigger calls | Number of triggers executed
External trigger calls | Number of external trigger calls
Primary key accesses | Number of search operations with direct access via the key
Primary key accesses (IN strategy) | Number of search operations with access via the key and IN search conditions
Primary key accesses (SUBQ strategy) | Number of search operations with access via the key and subqueries
Primary key accesses, rows read | Number of rows read by direct access via the key
Primary key accesses, rows qual | Number of rows that were read by direct access using the key and that satisfied conditions
Primary key range accesses | Number of search operations with accesses within a range of keys
Primary key range accesses, rows read | Number of rows read within a range of keys
Primary key range accesses, rows qual | Number of rows read within a range of keys that satisfied the condition
Index accesses | Number of search operations with accesses to an index
Index accesses (IN strategy) | Number of search operations with access to an index and IN search conditions
Index accesses (SUBQ strategy) | Number of search operations with accesses to an index and subqueries
Index scan | Number of index searches
Index accesses, rows read | Number of rows directly accessed using an index
Index accesses, rows qual | Number of rows indirectly that were accessed using an index and that satisfied the condition
Index range accesses | Number of search operations using an index range
Index range accesses, rows read | Number of rows indirectly accessed using an index range
Index range accesses, rows qual | Number of rows that satisfied the condition that were indirectly accessed via an index using an index range
Isolated index accesses | Number of search operations completely or partially satisfied by an index without accessing the corresponding base table rows
Isolated index accesses (IN strategy) | Number of search operations with an IN strategy completely or partially satisfied by an index without accessing the corresponding base table rows
Isolated index accesses (SUBQU strategy) | Number of search operations with a subquery strategy completely or partially satisfied by an index without accessing the corresponding base table rows
Isolated index accesses, rows read | Number of keys accessed within the search operations denoted in ISOLATED INDEX ACCESSES
Isolated index accesses, rows qual | Number of keys that were accessed within the search operations denoted in ISOLATED INDEX ACCESSES and that satisfied the condition
Isolated index range accesses | Number of search operations using a part of an index with values within a range without accessing the rows of the base table
Isolated index range accesses, rows read | Number of primary/secondary keys accessed within the search operations denoted by ISOLATED INDEX RANGE ACCESSES
Isolated index range accesses, rows qual | Number of primary/secondary keys that were accessed within the search operations denoted by ISOLATED INDEX RANGE ACCESSES and that satisfied the condition
Table scans | Number of search operations through the whole base table
Table scans, rows read | Number of rows accessed within search operations through the whole base table
Table scans, rows qual | Number of rows that were accessed within search operations through the whole base table and that satisfied the condition
Isolated index scans | Number of search operations for which a complete index was accessed without accessing rows of the base table
Isolated index scans, rows read | Number of index rows accessed within the search operations described under ISOLATED INDEX SCANS
Isolated index scans, rows qual | Number of index rows that were accessed within the search operations described under ISOLATED INDEX SCANS that satisfied the condition
Memory sorts / sort&merge | Number of sorting operations in the main memory to build temporary indexes
Memory sorts / sort&merge, rows read | Number of rows read to build temporary indexes
Sorts by insertion | Number of sorting operations by inserts
Sorts by insertion, rows inserted | Number of rows inserted during the sorting operation

See also:

MONITOR

Concepts of the Database System, SQL Optimizer

Search Conditions for Key Columns, Search Conditions for Indexed Columns

SUBQ CONDITION FOR KEY, SUBQ CONDITION FOR INDEX