Omron NX701-1620 User Manual page 289

 NJ101-20
DB type
Oracle Database 11g
SQL Server 2012
DB2 10.5
MySQL 5.6
Storage engine: InnoDB
Firebird 2.5
PostgreSQL 9.4
Percentage of task execution time: 50%
* The primary key is specified for the retrieval condition.
 Countermeasures
Measure the execution time of each DB Connection Instruction in reference to B-1-3 How to Measure
Execution Time of DB Connection Instructions. If the execution time of a DB Connection Instruction
exceeds the acceptable range of the equipment, take the following actions.
1
. Set a timeout for the DB Connection Instruction. Refer to B-2-4 Ensuring Equipment Performance
(Takt Time) by Monitoring the Instruction Execution Timeout for details.
2
. Execute a dummy DB_Insert instruction once after executing the DB_CreateMapping instruction as
a preparation for starting the actual operation.
NJ/NX-series Database Connection CPU Units User's Manual (W527)
Reference value for
Instruction
instruction execution time
DB_Insert 219 ms
DB_Select 406 ms
213 ms
DB_Insert
248 ms
DB_Select
373 ms
DB_Insert
DB_Select 395 ms
DB_Insert 219 ms
DB_Select 245 ms
DB_Insert 162 ms
DB_Select 450 ms
277 ms
DB_Insert
379 ms
DB_Select
Measurement condition
When executing an INSERT operation for 100-column
record
When searching for one record from 100,000 records
and retrieving 100-column data*
When executing an INSERT operation for 100-column
record
When searching for one record from 100,000 records
and retrieving 100-column data*
When executing an INSERT operation for 100-column
record
When searching for one record from 100,000 records
and retrieving 100-column data*
When executing an INSERT operation for 100-column
record
When searching for one record from 100,000 records
and retrieving 100-column data*
When executing an INSERT operation for 100-column
record
When searching for one record from 100,000 records
and retrieving 100-column data*
When executing an INSERT operation for 100-column
record
When searching for one record from 100,000 records
and retrieving 100-column data*
Appendix B
B
B-13