The _ActBILog VST displays before-image log activity, such as the number of before-image reads and writes, records and bytes written, number of records and bytes read and the number of busy and empty buffer and log force waits.

Field name Data type Description
_BiLog-BOBufHit INT64 Number of input buffer hits
_BiLog-BBuffWaits INT64 Number of times a process had to wait for a buffer that was busy.
_BiLog-BIWWrites INT64 Number of writes to the BI file performed by the before-image writer (BIW). For good performance, this number should be high in relation to the total number of BI writes.
_BiLog-BytesRead INT64 Number of bytes of data read from the BI file.
_BiLog-BytesWrtn INT64 Number of bytes of data written to the BI file.
_BiLog-ClstrClose INT64 Number of BI clusters filled and closed in preparation for reuse.
_BiLog-EBuffWaits INT64 Number of times a process had to wait because all buffers were full.
_BiLog-ForceWaits INT64 Number of waiting-for-commit records to be written to disk.
_BiLog-ForceWrts INT64 Number of waiting-for-commit records written to disk.
_BiLog-InputBufHit INT64 Number of input buffer hits
_BiLog-ModBufHit INT64 Number of modified buffer hits
_BiLog-OutputBufHit INT64 Number of output buffer hits
_BiLog-PartialWrts INT64 Number of writes to the BI file made before the BI buffer is full.
_BiLog-RecRead INT64 Number of BI records (notes) read from the BI file.
_BiLog-RecWriten INT64 Number of BI records (notes) written to the BI file.
_BiLog-TotalWrts INT64 Number of total writes to the BI file.
_BiLog-TotReads INT64 Number of BI blocks read from the BI file to undo transactions.
_BiLog-Trans INT64 Number of transactions committed to the BIfile.
_BiLog-UpTime INTEGER Number of seconds the BI file was open.