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Expert Oracle Posts

The Applications File Server could not open the file for read in Oracle EBS

One of our EBS R12 instance was giving below kind of errors when users were trying to open the log and out files of Concurrent requests from EBS front end.

“The Applications File Server could not open the file /fs01/logs/appl/conc/log/l106163221.req for read”

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Oracle ASM – ORA-19504: failed to create file – SVR4 Error: 13: Permission denied

During one of our 11gR2 database restore activity we found below error message in the RMAN “duplicate database command”

channel aux4: ORA-19870: error while restoring backup piece /oraclone/ORCL/rman_clone/ORCL_F_20170605_c1s60alv_1_1
ORA-19504: failed to create file "+DATA3"
ORA-15045: ASM file name '+DATA3' is not in reference form
ORA-17502: ksfdcre:5 Failed to create file +DATA3
ORA-15081: failed to submit an I/O operation to a disk
ORA-27091: unable to queue I/O
ORA-27041: unable to open file
SVR4 Error: 13: Permission denied

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GoldenGate Downstream deployment – Basics

GoldenGate Downstream deployment allows you to offload the source database extract load to intermediate or target server. The source database ships its redo logs to a downstream database, and Extract uses the logmining server at the downstream database to mine the redo logs. A downstream mining database can accept both archived logs and online redo logs from a source database

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GoldenGate Subdirectories Brief Details

After successfully installing Oracle GoldenGate 12c, it will create a lot of sub-directories structure which will be used by the different components of Oracle GoldenGate. There are so many directories that new user will get confused what to look where.The directories are the default locations for GoldenGate when creating objects and parameter files.

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Reorg tables and indexes in Oracle EBS Applications – Best Practices

Usually in OLTP environment like EBS Applications, tables are often get fragmented due to multiple DML activities that happens.Fragmented tables cause queries on those tables to slow down. It is very important to de-fragment this table and to reclaim the fragmented space from these objects.

For EBS we have also seen  that usually gathered statistics, indexing and proper SQL tuning is plenty to improve and maintain acceptable performance but sometime it is required to reorg the table.

One primary cause of fragmentation is that when you run delete command on the tables it delete the rows but doesn’t frees up the memory and also do not changes the high water mark.

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