davidzollo commented on code in PR #10428:
URL: https://github.com/apache/seatunnel/pull/10428#discussion_r2774691182
##########
seatunnel-connectors-v2/connector-cdc/connector-cdc-oracle/src/main/java/org/apache/seatunnel/connectors/seatunnel/cdc/oracle/utils/OracleConnectionUtils.java:
##########
@@ -84,6 +84,39 @@ public static RedoLogOffset
currentRedoLogOffset(JdbcConnection jdbc) {
}
}
+ /**
+ * Convert timestamp (milliseconds since epoch) to Oracle SCN.
+ *
+ * @param jdbc JDBC connection
+ * @param timestampMs timestamp in milliseconds since epoch
+ * @return RedoLogOffset with the corresponding SCN
+ */
+ public static RedoLogOffset timestampToScn(JdbcConnection jdbc, long
timestampMs) {
+ try {
+ LOG.info("Converting timestamp {} to SCN", timestampMs);
+ String sql = "SELECT TIMESTAMP_TO_SCN(?) AS SCN FROM DUAL";
+ return jdbc.prepareQueryAndMap(
+ sql,
+ statement -> {
+ java.sql.Timestamp timestamp = new
java.sql.Timestamp(timestampMs);
+ statement.setTimestamp(1, timestamp);
Review Comment:
Can you have a try for the following code
```
/**
* Convert timestamp (milliseconds since epoch) to Oracle SCN.
*
* @param jdbc JDBC connection
* @param timestampMs timestamp in milliseconds since epoch
* @return RedoLogOffset with the corresponding SCN
*/
public static RedoLogOffset timestampToScn(JdbcConnection jdbc, long
timestampMs) {
try {
// Use UTC base time + offset to completely avoid JVM and Session time zone
interference
// TO_TIMESTAMP_TZ('1970-01-01 00:00:00 +00:00', 'YYYY-MM-DD
HH24:MI:SS TZH:TZM') establishes an absolute UTC origin
// NUMTODSINTERVAL(?, 'SECOND') converts milliseconds to a
second interval (Oracle division retains decimals by default, with sufficient
precision)
String sql = "SELECT TIMESTAMP_TO_SCN(" +
"TO_TIMESTAMP_TZ('1970-01-01 00:00:00 +00:00',
'YYYY-MM-DD HH24:MI:SS TZH:TZM') " +
"+ NUMTODSINTERVAL(? / 1000, 'SECOND')" +
") AS SCN FROM DUAL";
return jdbc.prepareQueryAndMap(
sql,
statement -> {
// Pass Long directly; there's no need for
setTimestamp, and thus no need for Calendar or time zone conversion
statement.setObject(1, timestampMs);
},
rs -> {
if (rs.next()) {
final String scn = rs.getString(1);
return new RedoLogOffset(Long.parseLong(scn));
} else {
throw new SeaTunnelException(
"Cannot convert timestamp to SCN. Make
sure the specified timestamp is valid.");
}
});
} catch (SQLException e) {
String msg = "Failed to convert timestamp to SCN";
if (e.getMessage() != null &&
e.getMessage().contains("ORA-08180")) {
msg += ". The timestamp is too old and the redo log may have
been purged (undo_retention exceeded).";
}
throw new SeaTunnelException(msg, e);
}
}
```
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