no redo logs to process, waiting for new redo logs

[hellojuantu]

A brief description of the bug

Even though the Oracle database is actively generating redo logs and changes (confirmed by DML activity and the creation of new redo .log files), the log mining process repeatedly outputs:

no redo logs to process, waiting for new redo logs

It appears that the miner is stuck or not able to proceed, despite the redo logs being available and continuously updated.

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Is the bug present on the latest master branch

✅ Yes. We are using the latest master from the official repository.

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Describe steps required to reproduce the bug

1. Use the Docker image from OpenLogReplicator-tutorials with Oracle 11g.
2. Configure OpenLogReplicator to connect to a standby Oracle database (DataGuard environment).
3. Set the miner to off mode. Log path is:

   /oracle/data/oradata/hdappzs/fast_recovery_area/HDAPPZS/onlinelog
   

4. Ensure the database is under active DML operations (INSERT, UPDATE, etc.).
5. Observe the log output from OLR — it continuously prints "no redo logs to process" even though logs are being generated.

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Additional context

• Sample logs and redo file list screenshots are attached.
• Log output shows first confirmed scn and client requested scn, suggesting SCN mismatch or reader stuck.

[bersler]

Hi @hellojuantu , please provide the exact commands that you have used to reproduce this issue. The tutorials don't use Oracle 11 but 21 XE. What should I exactly run to see the error? I need to reproduce this issue in my lab to prepare a fix and later check if it helped.