After-image log activity (_ActAILog)
- Last Updated: February 11, 2026
- 1 minute read
- OpenEdge
- Version 13.0
- Documentation
After-image log activity (_ActAILog)
The _ActAILog VST displays after-image log activity, such as the number of after-image writes, records and bytes written, busy buffer waits, and log force waits.
| Field name | Data type | Description |
|---|---|---|
| _AiLog-AIWWrites | INT64 | Number of after-image writes performed by the after-image writer (AIW). This is a subset of the total number of AI writes. |
| _AiLog-BBuffWaits | INT64 | Number of busy buffer waits. |
| _AiLog-BytesWritn | INT64 | Amount of AI data written to the AI file, in bytes. |
| _AiLog-ForceWaits | INT64 | Number of waiting-for-commit records to be written to disk. |
| _AiLog-NoBufAvail | INT64 | Total number of times a process had to wait because a buffer was not available. |
| _AiLog-PartialWrt | INT64 | Number of writes to the AI file made before the AI buffer is full. |
| _AiLog-RecWriten | INT64 | Number of records written to the AIfile. |
| _AiLog-TotWrites | INT64 | Total number of writes to the AI file. |
| _AiLog-Trans | INT64 | Number of transactions committed to the AI file. |
| _AiLog-UpTime | INTEGER | Number of seconds the AI file was open. |