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ORA-4030 With Memory Leak in "kdx_brc: zctx_merged" (Doc ID 2451970.1)

Last updated on FEBRUARY 19, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 12.2.0.1 and later
Information in this document applies to any platform.

Symptoms

Excessive memory allocations and possible ORA-4030 errors can occur. Trace file shows large amounts of free memory, interspersed with smaller allocations to "kdx_brc: zctx_merged":

EXTENT 13 addr=0x7f4e60a8dfc0
Chunk 7f4e60a8dfd0 sz= 221384 free " "
Chunk 7f4e60ac4098 sz= 560 freeable "kdx_brc: zctx_m"
Chunk 7f4e60ac42c8 sz= 144 free " "
Chunk 7f4e60ac4358 sz= 560 freeable "kdx_brc: zctx_m"
Chunk 7f4e60ac4588 sz= 476232 free " "
Chunk 7f4e60b389d0 sz= 560 freeable "kdx_brc: zctx_m"
Chunk 7f4e60b38c00 sz= 71280 free " "
Chunk 7f4e60b4a270 sz= 560 freeable "kdx_brc: zctx_m"
Chunk 7f4e60b4a4a0 sz= 539488 free " "

Memory may also be allocated in "kdizctx_unzbuf" or "kdizctx_zimage".

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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