Control point that occur for each transfer journal

Thank you for taking my question!

I have a new server and not much turns except rman backups, imports and exports. Problem is that each assignment to remake Gets a checkpoint. Is this normal phenomenon while doing backups and loads?

Thank you!
Kathie

My server is 11.1.0.7 windows 2008.
I archive log.
I had 3 groups of newspapers with two members each.
Redo size is 100 m.
I just added a fourth group to see if that will help, but it seems strange to get a checkpoint every time the transfer log.

hread 1 Impossible to allocate to new newspapers, 148 sequence
Checkpoint is not complete
Currently Journal # 3 seq # 147 mem # 0: F:\ORACLE\11.1.0\ORADATA\CS90QAP\REDO03. JOURNAL
Currently Journal # 3 seq # 147 # 1 mem: E:\ORACLE\11.1.0\ORADATA\CS90QAP\REDO03A. JOURNAL
Thread 1 Advanced to record the sequence of 148 (switch LGWR)
Currently journal # 1, seq # 148 mem # 0: F:\ORACLE\11.1.0\ORADATA\CS90QAP\REDO01. JOURNAL
Currently journal # 1, seq # 148 mem # 1: E:\ORACLE\11.1.0\ORADATA\CS90QAP\REDO01A. JOURNAL
Fri 03 Apr 08:07:18 2009
Thread 1 cannot allot of new newspapers, sequence 149
Checkpoint is not complete
Currently journal # 1, seq # 148 mem # 0: F:\ORACLE\11.1.0\ORADATA\CS90QAP\REDO01. JOURNAL
Currently journal # 1, seq # 148 mem # 1: E:\ORACLE\11.1.0\ORADATA\CS90QAP\REDO01A. JOURNAL

Yes, this is normal, because the checkpoint occurs AFTER (not during) each order of redo log.
There are other cases when it occurs.

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