CPTS parameter: Difference between revisions
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==Description== | ==Description== | ||
You can specify a time interval, in seconds, during which new transactions, both User Language and IFAM are prevented from starting. If non-zero, the CPTS parameter gives in-flight transactions a chance to end before they are forced into sub-transaction wait. If all transactions end during the specified interval, a transaction checkpoint is taken instead of a sub-transaction checkpoint.The parameter applies only when sub-transaction checkpoints are activated: that is CPTYPE=1. | You can specify a time interval, in seconds, during which new transactions, both User Language and IFAM are prevented from starting. If non-zero, the CPTS parameter gives in-flight transactions a chance to end before they are forced into sub-transaction wait. If all transactions end during the specified interval, a transaction checkpoint is taken instead of a sub-transaction checkpoint. The parameter applies only when sub-transaction checkpoints are activated: that is <var>[[CPTYPE_parameter|CPTYPE]]</var>=1. | ||
<p class="note"><b>Note:</b> When non multicursor IFAM updating threads are active the CPTS parameter may be ineffective, because for those threads transactions are always in progress.</p> | <p class="note"><b>Note:</b> When non multicursor IFAM updating threads are active the CPTS parameter may be ineffective, because for those threads transactions are always in progress.</p> | ||
[[Category:System parameters]] | [[Category:System parameters]] | ||
[[Category:Parameters]] | [[Category:Parameters]] | ||
Latest revision as of 10:09, 14 October 2014
Sub-transaction timeout in seconds
Summary
- Default value
- 0
- Parameter type
- System
- Where set
- User 0's parameter line, resettable
- Related products
- All
- Introduced
- Model 204 V6.1
Description
You can specify a time interval, in seconds, during which new transactions, both User Language and IFAM are prevented from starting. If non-zero, the CPTS parameter gives in-flight transactions a chance to end before they are forced into sub-transaction wait. If all transactions end during the specified interval, a transaction checkpoint is taken instead of a sub-transaction checkpoint. The parameter applies only when sub-transaction checkpoints are activated: that is CPTYPE=1.
Note: When non multicursor IFAM updating threads are active the CPTS parameter may be ineffective, because for those threads transactions are always in progress.