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ERROR 1205 (HY000) : Lock wait timeout exceeded; try restarting transaction
You get the error because your allocated time to hold a DML lock in a transaction exceeds the set limit. Usually the default limit to hold a DML row lock, set by innodb_lock_wait_timeout db parameter, is 50 seconds. If your transaction doesn't commit/rollback within 50 seconds (more...)
Just a quick note to point out that the October PSU was just released. The database has a few more vulnerabilities than usual (31), but they are mostly related to Java and the high CVSS score of 9 only applies to people running Oracle on windows. (On other operating systems, the highest score is 6.5.)
I have also spent time working with MySQL a relational database with open source roots, now part of Oracle. In this post I want to talk about my impressions of MySQL and some tips and tricks I learned working with it.
First and for all, you will have to be ready (more...)
See http://www.oracle.com/technetwork/developer-tools/sql-developer/downloads/sqldev-releasenotes-v4-1925251.html for the details.
Original Post can be viewed at 12c: Sqlplus Displays Last Login Time For Non – Sys Users
12c database has introduces a pretty nifty Security feature which allows you to check last login time for non-sys user. e.g If I connect to scott user as below, it displays that (more...)
I really didn't think we would be seeing 12c until OpenWorld. I got a nice surprise a couple of weeks ago when people started tweeting that the docs were out. That followed quickly with the actual software being available for download.
I realize that people won't really be producing (more...)
Original Post can be viewed at 12c:Limiting PGA with pga_aggregate_limit
This is a interesting feature for Oracle DBA’s. Till now there has been no way of limiting total PGA being used by oracle instance. _pga_max_size (hidden parameter) could be used to limit per process memory. SGA_TARGET used to be hard (more...)
how NOT to design (more...)
Oracle Database Gateways 11g R2 (11.2) Installation and Configuration for heterogeneous connection from Oracle to Microsoft SQL database
Install the Oracle Database Gateways 11g R2 (11.2). See the screen snapshots of the installation here.
- During the installation, the following+ default initialization parameter file is created:
dg4msql = Database gateway for Microsoft SQL Server. If you choose a different database option, use the appropriate path name.
- Copy initdg4msql.ora to a new file init[MSSQL].ora.
[MSSQL] can be any meaningful name easier to refer to, (more...)