RE: rman failure ORA-04030 indicates memory issue
- From: <Paula_Stankus@xxxxxxxxxxxxxxx>
- To: <Paula_Stankus@xxxxxxxxxxxxxxx>, <tim@xxxxxxxxxxxxx>, <oracle-l@xxxxxxxxxxxxx>
- Date: Tue, 5 Oct 2004 04:50:53 -0400
Interesting note:
Same backup process, same way of making the connection, same
tnsnames.ora, sqlnet.ora but backing up to tape versus disk I get the
following after a successful connection to the target and successful
allocation of 4 channels:
RMAN-12001: could not open channel t5
RMAN-10008: could not create channel context
RMAN-10003: unable to connect to target database using connect string
"user/pass@fully qualified hostname"
ORA-12500: TNS:listener failed to start a dedicated server process
AND THE CONNECTION TO THTE TARGET WAS ALREADY MADE - IT IS IN ALLOCATING
CHANNEL 5 THAT THERE IS AN ERROR!
-----Original Message-----
From: Stankus, Paula G=20
Sent: Tuesday, October 05, 2004 4:43 AM
To: 'tim@xxxxxxxxxxxxx'; Oracle-L@Freelists. Org (E-mail)
Subject: rman failure ORA-04030 indicates memory issue
Rman fails with:
I notice that=20
A. A number of batch processes were added to database and likely using
a good deal of "sort" area as large batch processes often do
B. Volume of data added last night.
C. This error occurred along with another error:
ORA-12540: TNS:internal limit restriction exceeded
ORA-04030: out of process memory when trying to allocate 524824 bytes
(pga heap,KSFQ Buffers)
I looked at TOP on Solaris while running the job that failed with
ORA-04030 and out of 8 Gb, 4Gb of RAM were still showing as available.
I decreased the filesperset in rman from 10 to 4 and am concerned with
the degradation of runtime for my backup processes.
The pga_aggregate_target is set at pga_aggregate_target=3D1610612736
sga_max_size=3D2147483648
processes=3D150.
I plan to look at the pga_aggregate_target related views. I also
noticed in the alert.log the following:
ORA-07445: exception encountered: core dump [0000000101D51DF0] [SIGBUS]
[Object
specific hardware error] [0xFFFFFFFF7CA9FE90] [] []
Along with a trace file with a specific SQL statement. =20
Question: How appropriate/inappropriate are the pga_aggregate_target,
sga_max_size given 8Gb RAM and that this is the only database on the
system?
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