# Striim 3.10.1 documentation

##### UPDATE

If you performed the following UPDATE on the table:

UPDATE POSAUTHORIZATIONS SET BUSINESS_NAME = 'COMPANY 5A' where pos=0;
COMMIT;

Using LogMiner with the default setting Compression: false, the WAEvent for that UPDATE for the row created by the INSERT above would be similar to:

data: ["COMPANY 5A","D6RJPwyuLXoLqQRQcOcouJ26KGxJSf6hgbu",null,null,null,
null,null,null,null,null,null]
SQLRedoLength":"164","BytesProcessed":"729","ParentTxnID":"2.5.451","SessionInfo":"UNKNOWN",
"RecordSetID":" 0x000015.00000313.0010 ","DBCommitTimestamp":"1553126439000","COMMITSCN":726178,
"SEQUENCE":"1","Rollback":"0","STARTSCN":"726177","SegmentName":"POSAUTHORIZATIONS",
"OperationName":"UPDATE","TimeStamp":1553151639000,"TxnUserID":"SYS","RbaBlk":"787",
"SegmentType":"TABLE","TableName":"SCOTT.POSAUTHORIZATIONS","TxnID":"2.5.451","Serial":"201",
null,null]
Note that when using LogMiner the before section contains a value only for the modified column. You may use the IS_PRESENT() function to check whether a particular field value has a value (see Parsing the fields of WAEvent for CDC readers). With Compression: true, only the primary key is included in the before array:
before: [null,"D6RJPwyuLXoLqQRQcOcouJ26KGxJSf6hgbu",null,null,null,

In all cases, if OracleReader's SendBeforeImage property is set to False, the before value will be null.