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For ERP LN feature pack upgrade, what method of install are you using?
Installation Wizard into existing VRC
36%
Installation Wizard into new VRC
36%
Manual into existing VRC
7%
Manual into new VRC
22%
Total votes: 45

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  #1  
Old 8th March 2018, 16:46
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rduncan10 rduncan10 is offline
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Baan: IVc4 - DB: Oracle 10g - OS: SUSE Linux
ORA-00942 and Oracle shared_pool
Baan: Baan IVc4
DB: Oracle 12cR2
OS: SLES 12
C/S: None/Unknown

I'm troubleshooting a persistent problem we have with reports that will periodically lock up or take a very long time to run. Most of the time, the report works fine, but sometimes it locks.

Sometimes, recompiling the session code will make the report work faster, or the problem will go away if you wait awhile and try again.

There is no error in any Baan log and I've been searching various Oracle tables and logs.

I tried to output the v$sessions view in Oracle ("select * from v$sessions"). I have little idea how to read this output, but I notice a lot of ORA-00942 (table or view not found) errors, some associated with users running these reports.

There is no corresponding error in the Baan logs or the Oracle alert logs.

I have read that this error can sometimes be associated with a problem in the Oracle cache and running something like "ALTER SYSTEM FLUSH SHARED_POOL;" can fix it.
Has anyone had any experience with something like this in Baan?

Thanks
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  #2  
Old 8th March 2018, 21:48
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Baan: Baan 4-5,5.2(Reger),LN-6.1,Infor LN-10.x - DB: Oracle,MS-SQL - OS: HPUX, Linux, Windows
I think you have to tune your Oracle 12g Database or work with your DBA. From some of the online articles -
Quote:
http://www.orafaq.com/wiki/Parsing#Shared_pool
The purpose of this shared area is to maximize the sharing and the reuse of the information.
Periodically flushing a shared pool might be something you do in an emergency.
o negatively impacts performance
o is totally unnecessary
o negatively impacts performance
o could be killing your performance
o causes a large CPU spike every half hour
o causes a slow down ever half hour

When attempting to get shared buffers, Oracle does the following:

If LARGE_POOL_SIZE is set, then Oracle attempts to get memory from the large pool. If this value is not large enough, then Oracle does not try to get buffers from the shared pool.

If LARGE_POOL_SIZE is not set, then Oracle attempts to get memory from the shared pool. Fragmentation of the shared pool can lead to memory not being allocated. From the screenshot of the behavior in your environment, it does appear that memory could not be allocated from the Shared pool. This could be because the Shared Pool size is not optimal. This will depend on the Production environment Transactional requirement and should be carefully set after consultation from the DBA. A DBA should adjust this value upward based on the available physical memory of the hardware and performance, whether connections are dedicated, or run Multi-Threaded Server (MTS) and the application type. You may want to increase the Shared pool size (for example to 300000000; please note that as mentioned this will depend on your specific environment requirements)

SQL> select * from v$sgastat;
SQL> select nvl(pool,'<unnamed pool>') pool, name, bytes from v$sgastat order by 1, 3 desc
SQL> show sga
SQL> show parameter pool

The primary uses of -
shared pool - code
buffer cache - data

https://logicalread.com/oracle-conte.../#.WqGaqmrwasg
Also, refer to - Infor Enterprise Server Technical Reference Guide for Oracle Database Driver manual and you can use the following variable and run the program to get the cursor statistics and work with your DBA if your database cursor settings are proper or need to be adjusted.
Quote:
orastat / ORASTAT
Driver resource orastat
Environment variable ORASTAT
Client/Server resource Set for server only
Type Integer
Default Not set
This variable allows you to report database driver statistics. If set to
a value n greater than 0, statistics are logged every n seconds while
Description
the driver is active. If set to 0, a statistics report is generated when
the driver terminates.
If this is your custom code which uses the dynamic SQL make sure there is sql.close() for every sql.parse()
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