在最新版本的Oracle Database 12.1.0.2中，新特性提供了PDB Containers子句，用以从CDB$ROOT层面直接聚合查询多个PDB中同一张表的数据。在新特性文档中该段如下描述： Screen Shot 2014-10-16 at 8.54.26 AM issuehub.io Contribute to Open Source. Search issue labels to find the right project for you! Wocaties Band I like it a lot lipodrene xtreme v2 The Fed said its holdings of so-called “other” securitiesheld in custody and reported at face value rose by $325 millionto stand at $38 billion. Sitemap AppSites page 180
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Tanel Poder's Troubleshooting & Performance Tools for Oracle databases - tanelpoder/tpt-oracle. ... TX Transaction usn<<16 | slot sequence YES Lock held by a transaction to allow other transactions to : wait for it ... CH# SQL_TEXT ... Refer Me for Oracle: June 2013 p1 p2 p3 p1text p2text p3text 1415053318 524313 2611 name|mode usn<<16 | slot sequence -- From the above for the haning session we could see that Doug's Oracle Blog - Entries tagged as Locking
Oracle Database Cloud Exadata Service - Version N/A and later Information in this document applies to any platform. Symptoms. Database hangs periodically with many sessions being blocked by each other, deadlocks can be seen as well, with different waits such as 'cursor: pin S wait on X', 'row cache lock' and 'library cache load lock'.
Oracle Trace File Interpretation: enq: TX - index contention
Doug's Oracle Blog - Entries tagged as Locking
Seconds_in_wait state.VIVEK_SHARMA Folks During a Benchmark Run following Wait is extremely High enq: TX - row lock contention usn<<16 | slot sequence Qs How is the issue to be approached / actioned please? Refer Me for Oracle: Locking issues Refer Me for Oracle. Friday, 28 June 2013. Locking issues.SQL> select a.sid, a.serial#, a.sql_id, a.event, a.p1text, a.p2text, a.p3 text, a.p1, a.p2, a.p3, b.sql_text from V$session a, V$sql b where a.sql_hash_value = b.hash_value and a.sql_address = b.address; SID SERIAL# SQL_ID EVENT. Oracle’s full line o f integrated | SPARC M7-16 Server
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Locks | Oracle Scratchpad Every now and again I have to check what a particular lock (or enqueue) type is for and what the associated parameter values represent. This often means I have to think about the names of a couple of views and a collection of columns – then create a few column formats to make the output readable (though sometimes I can take advantage of the “print_table()” procedure that Tom Kyte ... performance tunning - Oracle Ask TOM 'log file sync' is sessions waiting for the log writer to respond. So from a session's point of view, it is waiting for a commit to complete, but it is *not* a reflection on the actual writing of redo to the redo log. Diagnosing Locking Problems using ASH – Part 5 - Doug's ...
Christmas Explain Plan Patterns - Kerry Osborne's Oracle Blog Hi Fei, My experience with obj# in wait events is that the developers were not very consistent about cleaning up after themselves. It is pretty common to see events that are not related to individual objects that have an obj# (presumably because the developers didn’t clear the field), -1 is generally used when an obj# does not apply and the developers have taken the time to set it. Diagnosing Locking Problems using ASH – Part 5 - Doug's Diagnosing Locking Problems using ASH – Part 6 "Toto, I've a feeling we're not in Kansas any more."What started as a simple write-up of a course demo gone wrong (or right, depending the way you look at these things) has grown arms and legs and staggered away from the original intention to ta Alert for Blocking sessions - Oracle Ask TOM Apr 28, 2011 · Hi Tom, I have a similar requirement, my developers have coded in such a way that thire sql code delete's and updates some of the primary keys in the tables and at the same time inserts into those tables, we had a situation where the DB completely hangs and upon looking there were no foreign keys index on the child table, upon creating those indexes prevented such hangs on the DB and now … [Oracle-l] Row cache locks on INSERTs with a sequence