Abstract
A few X$ tables are mentioned in the documentation, but the vast majority are undocumented. For example X$BH is mentioned in the Oracle9i Performance Tuning Guide as well as the Oracle10g Performance Tuning Guide. The Oracle10g Warehouse Builder Installation and Administration Guide contains a procedure for resolving locking issues pertaining to the library cache by accessing X$KGLLK.1
The manual shows how to access X$KGLLK for resolving the error “ORA-04021 timeout occurred while waiting to lock object.“
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© 2009 Norbert Debes
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Debes, N. (2009). Introduction to X$ Fixed Tables. In: Secrets of the Oracle Database. Apress. https://doi.org/10.1007/978-1-4302-1953-8_9
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DOI: https://doi.org/10.1007/978-1-4302-1953-8_9
Publisher Name: Apress
Print ISBN: 978-1-4302-1952-1
Online ISBN: 978-1-4302-1953-8
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